a) The current ages of his children are: 8 years, 15 years and 17 years
b) In the year when the ages of his three children have doubled, their ages also form a pythagorean triple.
Let x be the age of the youngest child, y represents the age of the middle child and z be the age of oldest child.
The oldest child is nine years older than the youngest.
so, we get an equation,
z = 9 + x
⇒ x = z - 9
and the middle child is two years younger than the oldest.
so, we get an equation,
y = z - 2
The age of his children now form a Pythagorean triple.
⇒ x² + y² = z²
substitute the values for x and y from above two equations.
⇒ (z - 9)² + (z - 2)² = z²
⇒ z² -18z + 81 + z² - 4z +4 = z²
⇒ 2z² -22z + 85 - z² = z² - z²
⇒ z² - 22z + 85 = 0
⇒ (z - 17)(z - 5) = 0
For z = 17:
x = 17 - 9
x = 8
and y = 17 - 2
y = 15
For z = 5, the value of x would be negative which is contradiction.
As is always greater than 0
For x = 8 , y = 15 and z = 17
Consider x² + y²
= 8² + 15²
= 64 + 225
= 289
= 17²
= z²
This means, (8, 15, 17) is a Pythagorean triple.
Thus, their current ages are: 8 years, 15 years and 17 years
If the ages of his three children have doubled then:
x = 16 , y = 30 and z = 34
Consider x² + y²
= 16² + 30²
= 256 + 900
= 1156
= 34²
= z²
This means, (16, 30, 34) also form a Pythagorean triple.
In the year when the ages of his three children have doubled, their ages will form a pythagorean triple.
Thus, the man is correct.
Learn more about the Pythagorean triple here:
https://brainly.com/question/15190643
#SPJ4
−2>m/6−7 graph the iniquality how do you do this????
A graph of the inequality is shown in the image attached below.
How to graph the inequality?In this scenario, we would solve the given inequality by making m the subject of formula as follows;
-2 > m/6 - 7
By collecting like terms, we have the following:
-2 + 7 > m/6
5 > m/6
Cross-multiplying, we have:
30 > m
By re-writing the inequality, we have:
m < 30
Next, we would use an online graphing calculator to plot the inequality as shown in the graph attached below. Also, the circle is open because of the greater than (>) symbol.
Read more on inequality here: brainly.com/question/27976143
#SPJ1
A number N divides each of 17 and 30 with the same remainder in each case. What is the largest value N can have?
The equivalence of the remainder following the division of 17 and 30 by N indicates that the largest value N can have is 30
What is remainder in a division operation?The remainder term in a division of one value by a second value is the value which is less than the divisor, remaining after the divisor divides the dividend by a number of times indicated by the quotient.
The remainder following the division of 17 and 30 by the number N are the same.
Let R represent the remainder following the division of the integers 17 and 30 and let b represent the number of times N divides 30 than 17. Using the long division formula, we get;
17/N = Q + R/17
30/N = b·Q + R/17
30/N - 17/N = 13/N
The substitution property indicates that we get the following equation;
30/N - 17/N = b·Q + R/17 - (Q + R/17) = b·Q - Q
30/N - 17/N = b·Q - Q
13/N = b·Q - Q = (b - 1)·Q
13/N = (b - 1)·Q
The fraction 13/N which is equivalent to the product of (b - 1) and Q indicates that N is a factor of 13
13 is a prime number, therefore, the factors of 13 are 13 and N
Therefore, the possible values of N are 13 and 1
The largest value N can have is therefore, 13
Learn more on long division method of dividing numbers here: https://brainly.com/question/8130763
#SPJ1
A vanilla cake has a diameter of 8 inches. A chocolate cake has a diameter of 10 inches. What is the circumference the top surfaces of the two cakes to the nearest tenth? Use 3. 14 for p
If vanilla cake has a diameter of 8 inches and chocolate cake has a diameter of 10 inches , then the circumference of vanilla cake is 25.12 inches and of chocolate cake is 31.4 inches .
The Circumference(C) of the circle can be found using formula: C = 2×π×r and r is the radius of the circle.
For the Vanilla cake, the diameter is 8 inches ;
and So , radius is = 8/2 = 4 inches.
The , Circumference of vanilla cake is = 2×π×4 = 8×3.14 inches.
= 25.12 inches .
For Chocolate cake, diameter is 10 inches ;
and radius is = 10/2 = 5 inches.
So , Circumference of chocolate cake is = 2×π×5 = 10×3.14 inches.
= 31.4 inches .
Therefore , To the nearest tenth, circumference of vanilla cake is 25.13 inches and circumference of chocolate cake is 31.42 inches.
The given question is incomplete , the complete question is
A vanilla cake has a diameter of 8 inches. A chocolate cake has a diameter of 10 inches. What is the circumference the top surfaces of the two cakes to the nearest tenth? Use 3. 14 for π .
Learn more about Circumference here
https://brainly.com/question/16125353
#SPJ4
Which equation represents this statement? x − 17 = 25 x − 25 = 17 x + 17 = −25 x − 17 = −25
The statement "If we subtract 25 from a number, the result is 17" represented by the equation x - 25 = 17.
What is an equation?A formula known as an equation uses the equals sign (=) to express how two expressions are equal.
The given verbal statement is "If we subtract 25 from a number, the result is 17"
Now we have to convert to algebraic equation.
we subtract 25 from a number = x - 25
this is equal to 17
So, If we subtract 25 from a number, the result is 17 means
x - 25 = 17
Therefore, the answer is x - 25 = 17.
To learn more about equation visit:
brainly.com/question/29514785
#SPJ1
The complete question is:
Which equation represents this statement "If we subtract 25 from a number, the result is 17"?
(a) x − 17 = 25
(b) x − 25 = 17
(c) x + 17 = −25
(d) x − 17 = −25
What is the reverse of multiplied by 146 
The Multiplicative Inverse of postive 146 is 0.00684932.
What is Multiplicative Inverse?
The reciprocal of a particular integer is referred to as the multiplicative inverse. It is employed to make mathematical expressions simpler. The word "inverse" denotes an opposing or opposed action, arrangement, position, or direction. A number becomes 1 when it is multiplied by its multiplicative inverse.
When a number is multiplied by the original number, the result is 1, that number is said to be the multiplicative inverse of that number. A-1, or 1/a, stands for the multiplicative inverse of the letter "a". In other terms, two numbers are said to be multiplicative inverses of one another when their product is 1.
The division of 1 by a number yields the multiplicative inverse of that number. The number's reciprocal is another name for it. According to the multiplicative inverse formula, a number's product with its reciprocal is 1.
Given number for the multiplicative inverse is 146;
so, If the Multiplicative Inverse of 146 is x
then , the problem can be written as a function as follows:
146(x) = 1
Thus, to get the answer, we divide 1 by 146 like this:
1 / 146 = 0.00684932
Therefore,the Multiplicative Inverse of postive 146 is 0.00684932.
Learn more about Multiplicative Inverse click here:
https://brainly.com/question/30281613
#SPJ1
HELPPPPP with this math. Problemo i dum 8n2−17
The value of {n} for which the given equation holds true is
n = ±√2.125..
What is a function? What is a quadratic function?A function describes a relationship between a dependent and independent variable. Example -
y = f(x) = 5x + 9
A quadratic function is of the form -
f(x) = ax² + bx + c
Given is the function as -
f(n) = 8n² - 17
Put f(n) = 0. Solving, we get -
8n² - 17 = 0
8n² = 17
n² = 17/8
n = ±√17/8
n = ±√2.125
Therefore, the value of {n} for which the given equation holds true is
n = ±√2.125.
To solve more questions on functions, visit the link below -
https://brainly.com/question/17613163
#SPJ1
{Question in english -
HELPPPPP with this math. Problem i doing-
8n² − 17.}
A restaurant used 2 1/2 kilograms of potatoes to
make 6 meals. If they used an equal amount of
potatoes on each meal, how much potato did they
use for each meal?
Based on the information provided, it can be concluded that for each meal the restaurant used 0.4166 kilograms of potato.
How to calculate how many kilograms of potatoes the restaurant used in each meal?To calculate the quantity of potatoes used, you can use the following formula shown below:
Total of potatoes used / number of meals
2 1/2 kilograms of potatoes/ 6 meals
2 1/2 kilograms of potatoes is equivalent to 2.5 (1/2 = 0.5)
2.5 kilograms of potatoes/ 6 meals
0.4166
Therefore for each meal, the restaurant used 0.4166 kilograms of potatoes.
Learn more about division in https://brainly.com/question/15381501
#SPJ1
a cypress beam found in the tomb of sneferu in egypt contained 55% of the amount of carbon-14 found in living cypress wood. estimate the age of the tomb given that carbon-14 has a half-life of 5730 years.
The estimated age of the tomb of Sneferu is 8,330 years.
The age of the tomb can be estimated using the carbon-14 decay equation, which states that the amount of carbon-14 remaining after time t (in years) is equal to the initial amount of carbon-14 multiplied by 0.5^(t/5730).The decay equation for carbon-14 is A = A₀e⁻kt, where A₀ is the original amount of carbon-14, A is the amount of carbon-14 at time t, k is the decay constant, and t is the amount of time that has passed.
We can rearrange the equation to solve for t: t = -ln(A/A₀)/k. In this equation, A is the amount of carbon-14 found in the cypress beam, and A₀ is the amount of carbon-14 found in living cypress wood.
In this case, the initial amount of carbon-14 was 100%, and the remaining amount was 55%. Solving for t, we get t = (ln(55%)/ln(0.5))*5730 = 8,330 years.
Therefore, the estimated age of the tomb of Sneferu is 8,330 years.
Learn more about estimated age here:
https://brainly.com/question/27138697
#SPJ4
b. What is the probability that the boys will draw matching blocks? Is the game fair? Justify your answer.
yes it is fair The probability of drawing matching blocks is 1/3
What is probability?A probability is a number that reflects the chance or likelihood that a particular event will occur. Probabilities can be expressed as proportions that range from 0 to 1, and they can also be expressed as percentages ranging from 0% to 100%.
The probability of drawing matching blocks is 1/3
The probability is the measure of the likelihood of an event to happen. It measures the certainty of the event. The formula for probability is given by; P(E) = Number of Favorable Outcomes/Number of total outcomes.
four main types of probability exist: classical, empirical, subjective and axiomatic. Probability is synonymous with possibility, so you could say it's the possibility that a particular event will happen.
To learn more about probability refers to;
https://brainly.com/question/30034780
#SPJ1
estimate 3.71 x 0.296 by rounding each number to the place of its leftmost nonzero digit.
The estimate of the product expression is 0.12
How to estimate the expressionFrom the question, we have the following parameters that can be used in our computation:
3.71 * 0.296
From the question, the numbers are to be rounded to the place of its leftmost nonzero digit.
So, when the numbers are rounded, we have
4 * 0.3
Evaluate the product
This gives
0.12
Hence, the solution is 0.12
Read more about estimate at
https://brainly.com/question/24491627
#SPJ1
01
3
✓5
Check
Unit price for the 2.24-pound bag:
$per pound
Unit price for the 3.12-pound bag: $ per pound
The better buy:
O The 2.24-pound bag
O The 3.12-pound bag
O Neither (They have the same unit price)
The better buy for the shrimp based on the information will be the A. 2.24 pound bag.
How to calculate the unit price?From the information, Josh paid $11.96 for a 2.24 -pound bag of shrimp at one store and the following week, he paid $17.24 for a 3.12 -pound bag at another store.
The unit price when Josh paid $11.96 for a 2.24 -pound bag of shrimp will be:
= $11.96 / 2.24
= $5.34
The unit price when he paid $17.24 for a 3.12 -pound bag at another store will be:
= $17.24 / 3.12
= $5 53
Therefore, A is cheaper.
Learn more about unit price on:
brainly.com/question/26959824
#SPJ1
Complete question
Josh paid $11.96 for a 2.24 -pound bag of shrimp at one store. The following week, he paid $17.24 for a 3.12 -pound bag at another store. Find the unit price for each bag. Then state which bag is the better buy based on the unit price. Round your answers to the nearest cent.
The weights of a pack of chewing gum for a certain brand have a mean of 47. 1 grams and a standard deviation of 2. 4 grams. What is the weight of a randomly selected pack of gum that has a z-score of 3. 11?
The weight of a randomly selected pack of gum that has a z-score of 3.11, is 54.6 grams. So, the right option is D.
A Z-score can be used to calculate how much the data deviates from the mean. It shows how frequently the data is either above or below the mean. According to the formula,
Z = (X - μ)/σ
where, Z is the Z-score, X is the data point, μ is the mean and σ is the standard variable.
Z = 3.11, σ = 2.4, μ = 47.1
Z = (X - μ)/σ
Now putting the value
3.11 = (X - 47.1)/2.4
Multiply by 2.4 on both side
X - 47.1 = 3.11 X 2.4
X - 47.1 = 7.464
Add 47.1 on both side, we get
X = 54.564 grams
To learn more about Z-score link is here
brainly.com/question/15016913
#SPJ4
The complete question is:
The weights of a pack of chewing gum for a certain brand have a mean of 47.1 grams and a standard deviation of 2.4 grams. What is the weight of a randomly selected pack of gum that has a z-score of 3.11?
39.6 grams
44.7 grams
49.5 grams
54.6 grams
How many solutions can be found for the system of linear equations represented on the graph?
Responses
A infinitely many solutionsinfinitely many solutions
B two solutionstwo solutions
C one solutionone solution
D no solution
Answer:
the answer is b
Step-by-step explanation:
what is the equation of the line that passes through the point (−1,1)(−1,1) and has a slope of 5?
Answer:
The equation of a line can be represented in the slope-intercept form, y = mx + b, where m is the slope of the line and b is the y-intercept.
Given that the line has a slope of 5 and passes through the point (-1,1) we can use the point-slope form of a linear equation, which is y - y1 = m(x - x1)
The point (-1,1) can be plugged into the equation:
y - 1 = 5(x + 1)
By simplifying and re-arranging the equation, we get:
y = 5x + 6
So the equation of the line that passes through the point (-1,1) and has a slope of 5 is: y = 5x + 6
Answer:
y = 5x+6
Step-by-step explanation:
Using the slope-intercept form of a line
y = mx+b where m is the slope and b is the y-intercept
y = 5x+b
Substitute the point into the line.
1 = 5(-1) +b
1+5 = b
6=b
The equation is
y = 5x+6
MATHHHHH PLEASEEEEEEE
Answer:
halfway between 862350 and 862360
determine whether the pairs of triangles are congruent.
jenny got a box of 15 stickers . then she used 5 on a thank you card what fraction of the box did she used
Is the following is considered a LINEAR table. True or False.
The following is considered a LINEAR table is True .
What is mean by LINEAR table?By observing how X and Y vary, you may determine whether a table is linear. A table is linear if Y rises at a steady pace as X increases by 1. Finding the initial difference allows you to determine the constant rate.Look for a consistent rate of change to establish if the function is linear or nonlinear.The rate of change between any two rows in the table may be calculated.Pick another set of rows and figure out how much they have changed at this point.Both change rates are the same.There are several instances of linear equations, including 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, x + y = 2, and 3x - y + z = 3.To learn more about LINEAR table refer to:
https://brainly.com/question/29783696
#SPJ1
The number of marshmallows an adult can fit in their mouth is skewed right with a mean of 6. 5 and a standard
deviation of 0. 58. What is the probability that a random sample of 40 adults would have a mean of at least 7
marshmallows?
approximately 0
0. 1943
0. 2934
0. 5367
The probability that a random sample of 40 adults would have a mean of at least 7 marshmallows is 0.1943
We know that the formula for the z-score:
[tex]z=\frac{x-\mu}{\sigma}[/tex]
To find: the probability that a random sample of 40 adults would have a mean of at least 7 marshmallows.
This is nothing but the p-value of Z when X = 7
Here the number of marshmallows an adult can fit in their mouth is skewed right with a mean of 6. 5 and a standard deviation of 0. 58
So, mean μ = 6.5
standard deviation σ = 0.58
Also, n = 40,
x = 7,
By central limit theorem,
[tex]z=\frac{x-\mu}{\sigma}\\\\z=\frac{7-6.5}{0.58}\\\\z=\frac{0.5}{0.58}\\\\z = 0.86[/tex]
z = 0.86 has p value 0.1943
Thus, the required probability is 0.1943
Learn more about the probability here:
https://brainly.com/question/15124899
#SPJ4
What is the factored form of this expression?
-9x^3 - 12x^2 - x4
The factored form of the expression -9x^³ - 12x² - 4x is given as follows:
A. -x(3x + 2)².
How to simplify the expression?The expression for this problem is defined as follows:
-9x^³ - 12x² - 4x.
The exponents of the expression are given as follows:
3, 2 and 1.
The lowest exponent is of:
1.
Simplifying the lowest exponent, the expression is given as follows:
-x(9x² + 12x + 4)
The inner expression can be obtained with the square of the sum, as follows:
9x² + 12x + 4 = (3x + 2)².
Meaning that the simplified expression is of:
-x(3x + 2)².
Which is option A.
More can be learned about simplification of expressions at https://brainly.com/question/723406
#SPJ1
at what intercepts is the graph constant
Answer:
for any two points in the interval, a change in x results in a zero change in f(x)
Step-by-step explanation:
Quadrilateral EFGH is a rectangle. If EF=4x−6 and HG=x+3 , find EF .
We are given that quadrilateral EFGH is a rectangle. If EF=4x−6 and HG=x+3 , then the side EF= -34.
What is a quadrilateral?
A quadrilateral is a four-sided polygon, or a shape with four straight sides. It is a type of closed, two-dimensional shape. The four sides of a quadrilateral can be of equal or varying lengths and angles. Examples of quadrilaterals include squares, rectangles, rhombuses, parallelograms, and trapezoids.
Since quadrilateral EFGH is a rectangle, the opposite sides are congruent and parallel.
Therefore, if EF = 4x - 6 and HG = x + 3, then HG=EF
so, x+3=4x-6
then, x=-9
Therefore, EF=4x-6=4(-9)-6= -34
Hence, EF= -34
To know more about quadrilateral visit,
https://brainly.com/question/30374195
#SPJ1
Find sinθ if 0 < θ < 90 and cosθ= 1/2
The sine of the angle theta is 1/2√3
How to determine the sine of the angleFrom the question, we have the following parameters that can be used in our computation:
0 < θ < 90 and cosθ= 1/2
The above parameter mean that
sin(θ) = √(1 - cos²(θ))
substitute the known values in the above equation, so, we have the following representation
sin(θ) = √(1 - 1/2²)
This gives
sin(θ) = √(3/4)
Take the square roots
sin(θ) = 1/2√3
Read more about trigonometry ratio at
https://brainly.com/question/24349828
#SPJ1
Which is greater, 20·34 or 20÷34? Explain.
Answer:
Step-by-step explanation:
The result of 20 · 34 is 680, and the result of 20 ÷ 34 is approximately 0.588235294117647. Therefore, 20 · 34 is greater than 20 ÷ 34.The symbol "·" is used for multiplication, and the symbol "÷" is used for division. When we multiply 20 and 34, we are finding the total value of 20 items that are each worth 34. While when we divide 20 by 34, we are finding out how many times 34 can fit into 20, which is less than one.In short, Multiplication gives a bigger value than division, that's why 20*34 is greater than 20/34.
Answer:
Step-by-step explanation:
Hello! The way you can figure this question out is by solving each one. Let's start with 20 x 34.
How you can multiply 20 x 34
34
x20
______
00 - 0 x 4, 0 x 3 both equal 0
+ 680 - Put a 0 to the right of the number, 2 x 4 = 8, 3 x 2 = 6
______
680
34 x 20 = 680
Now, divide 20 by 34
20/34 = 10/17
10/17 is less than 1, while 680 is much greater than 1.
680 > 10/17
20 x 34 is greater than 20 divided by 34
Fun fact:
If two numbers are greater than 1, are whole numbers, and they are multiplied and divided, the number produced by each equation will always be greater when multiplied.
When Sasha throws two dice, the probability of her scoring two sixes is 1/36. The probability of her scoring one six is 5/18.
Find the probability of Sasha scoring:
a at least one six
b no sixes.
The probability of Sasha scoring at least one six is 11/36, and the probability of Sasha scoring no sixes is 25/36.
The total number of outcomes in which there is at least one 6 are:
(6,6), (6,1), (6,2), (6,3), (6,4), (6,5), (1,6), (2,6), (3,6), (4,6), (5,6).
So there are 11 cases in which at least one six appears in two die rolls.
The total number of outcomes can be discovered through the multiplication principle. There are 6 numbers (numbers 1–6) on the first die and the same 6 numbers on the second die, so there are a total of 36 possible outcomes.
The probability of at least one six-in-two die roll is 11/36.
The total number of outcomes in which there is no 6 are:
(5,1), (5,2), (5,3), (5,4), (5,5), (4,1), (4,2), (4,3), (4,4), (4,5), (3,1), (3,2), (3,3), (3,4), (3,5), (2,1), (2,2), (2,3), (2,4), (2,5), (1,1), (1,2), (1,3), (1,4), (1,5).
So there are 25 cases in which no six appear in two die rolls.
The total number of outcomes can be discovered through the multiplication principle. There are 6 numbers (numbers 1–6) on the first die and the same 6 numbers on the second die, so there are a total of 36 possible outcomes.
The probability of no six-in-two die roll is 25/36.
To know more about probability, here
https://brainly.com/question/11234923
#SPJ4
Circle the representation that has the less steep slope.
Pls help me with 3 and 4
The line of linear equation y = 8x - 48 is much steeper than the line of linear equation y = -x - 4-.
What is a linear equation?
A linear equation is one that has a degree of 1 as its maximum value. No variable in a linear equation, thus, has an exponent greater than 1. A linear equation's graph will always be a straight line.
The table of input and output values are given for the function.
The slope-intercept form of an equation/function is - y = mx + b
To find the slope m use the formula -
(y2 - y1)/(x2 - x1)
Substituting the values in the equation -
[16 - 32]/[8 - 10]
(-16)/(-2)
8
So, the slope point is obtained as m = 8.
The equation becomes - y = 8x + b
To find the value of b substitute the values of x and y in the equation -
32 = 8(10) + b
32 = 80 + b
b = 32 - 80
b = -48
So, the value for b is -48.
Now, the equation becomes -
y = 8x - 48
A graph has been plotted for the equation.
Similarly, the points for a line is given as (-6,2) and (-9,5).
The slope-intercept form of an equation/function is - y = mx + b
To find the slope m use the formula -
(y2 - y1)/(x2 - x1)
Substituting the values in the equation -
[5 - 2]/[-9 - (-6)]
(3)/(-9 + 6)
3/-3
-1
So, the slope point is obtained as m = -1.
The equation becomes - y = -x + b
To find the value of b substitute the values of x and y in the equation -
2 = -(-6) + b
2 = 6 + b
b = 2 - 6
b = -4
So, the value for b is -4.
Now, the equation becomes -
y = -x - 4
A graph has been plotted for the equation.
It is known that the larger the slope the steeper the line.
In the graph also it can be seen that the graph of line y = 8x - 48 is much steeper.
Therefore, the slope of line y = 8x - 48 is more steeper.
To learn more about linear equation from the given link
https://brainly.com/question/2226590
#SPJ1
One apple costs S0.55 at the grocery store. Customers receive one free apple for every 8 apples that they buy. Anna paid a total of $8.80 for her apples. How many apples did Anna receive?
Answer:
She was given 1 free apple and paid for 15 apples.
Step-by-step explanation:
0.55x2=1.1
1.1x8=8.8
8.8/.55=16
16-1=15
And you know she paid for 15 apples and got 1 free.
Bowler world charges $5. 00 to rent shoes and $1. 10 per game. Lucky Spares charges $3. 00 to rent shoes and $1. 50 per game. Write a system of equations to represent the
situation
Total cost of renting at Bowler World = $5 + $1.1x
Total cost of renting at Lucky Spares = $3 + $1.50x
The equation that can be used to determine the total cost of renting shoes at both locations is:
total cost = fixed cost + variable cost
Total cost of renting at Bowler World = $5 + $1.1x
Total cost of renting at Lucky Spares = $3 + $1.50x
Where
x = number of games played
In order to determine the number of games that would make the cost equal in both locations, the following steps would be taken:
$5 + $1.1x = $3 + $1.50x
Combine similar terms
$5 - $3 = $1.50x - $1.1x
$2 = $0.40x
Divide both sides of the equation by $0.4
x = 2 / 0.4
x = 5 games
Total cost = $5 + $1.1(5) = $5 + $5.5 = $10.50
The number of games that would make the cost equal in both locations is 5. The total cost is $10.50.
To learn more about total cost:
https://brainly.com/question/10417282
#SPJ4
A rectangular two-story horse barn is being designed for a farm. The upper floor will be used for storing hay, and the lower floor will have horse stalls that extend 5 feet from both of the longer walls. The barn's length is twice the barn's width, and the lower floor's ceiling height is 7 feet less than the barn's width. What should the dimensions of the lower floor be if the space not used for stalls is to have a volume of 2,380 cubic feet?
Dimensions of the lower floor with the given volume of 2380 cubic feet are given by : length = 34feet, width = 7feet, and height = 10 feet.
Let us consider 'y' be the width of the barn.
Lower floor with horse stall which was extends 5 feet from both the sides.
Width after having horse stall = x - 10
Barn's length is twice the barn's width
Length = 2x
Height is 7 feet less than the barn's width = x - 7
Volume = 2380 cubic feet
⇒Length × width × height = 2380
⇒ ( 2x ) (x -10 ) (x -7 ) = 2380
⇒(2x² -20x)(x-7) = 1190
⇒2x³ -34x² +140x -2380 =0
⇒ x = 17 , √70i, -√70i
x can not be imaginary.
⇒ x = 17feet ( approximately)
Required dimensions are:
Length : 2x = 34feet
Width : x -10 = 7 feet
Height : x - 7 = 10 feet
Therefore, for the given volume the required dimensions are 34feet, 7 feet , and 10 feet.
Learn more about volume here
brainly.com/question/13338592
#SPJ4
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
The diameter of a tire is 2. 5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit.
a. Find the circumference of the tire.
b. About how many times will the tire have to rotate to travel 1 mile? (1 mile = 5,280 ft)
a) The circumference of the tire is 7.85 ft
b) About 673 times the tire will have to rotate to travel 1 mile.
The diameter of a tire is 2. 5 ft.
Let r represents the radius of the tire.
r = diameter/2
r = 2.5 / 2
r = 1.25 ft
a) the circumference of the tire:
We know that the formula for the circumference of circle:
C = 2πr
So, the circumference of the tire would be,
C = 2 × π × r
C = 2 × π × 1.25
C = 7.85 ft
b) Let the tire will have to rotate n times in order to travel 1 mile.
We know that 1 mile = 5,280 ft
So, n = 5280 / 7.85
n = 672.6
n ≈ 673
Thus, the tire will have to rotate 673 times in order to travel 1 mile.
Learn more about the circumference of circle here:
https://brainly.com/question/11213974
#SPJ4