Answers
Answer:
Step-by-step explanation:
[tex]\frac{y}{\sqrt{x} }[/tex] - [tex]\frac{\sqrt{x} }{x}[/tex] = [tex]\frac{y\sqrt{x} }{\sqrt{x} \sqrt{x} }[/tex] - [tex]\frac{\sqrt{x} }{x}[/tex] = [tex]\frac{y\sqrt{x} }{x}[/tex] - [tex]\frac{\sqrt{x} }{x}[/tex] = [tex]\frac{y\sqrt{x} -\sqrt{x} }{x}[/tex]
Related Questions
Hemework -13 .
Express the ratio 20cm to 15m in the form 1:n
Answers
Answer:
1: 75
Step-by-step explanation:
20cm : 15m
Convert meters to cm
1 meter = 100 cm
15m = 15 x 100 = 1500 cm
20cm:1500cm
Divide both sides of the ratio by 20
=> 1 : 1500/20 = 1: 75
The ratio of 20cm to 15m in the form 1:n is 1:75.
What is a ratio?A ratio is a mathematical comparison of two or more quantities expressed in terms of the number of times one quantity contains another quantity.
It is used to express the relationship between two or more numbers or variables and is usually written as a fraction or with a colon between the two numbers.
We have,
First, we need to convert both measurements to the same unit.
Let's convert 20cm to meters:
20 cm = 20/100 m = 0.2 m
Now we can express the ratio of 20cm to 15m as:
0.2m : 15m
To simplify this ratio, we can divide both sides by the greatest common factor of the two numbers, which is 0.1m:
0.2m/0.1m : 15m/0.1m
2 : 150
Finally, we can simplify the ratio by dividing both sides by 2:
1 : 75
Therefore,
The ratio of 20cm to 15m in the form 1:n is 1:75.
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in the long-run we can expect the population mean or proportion/percentage to occur. explain what is mean by the phrase in the long run? hint: imagine if we repeatedly took samples from the population. what would the average of the sample means be equal to?
Answers
The Central Limit Theorem states that over a large number of samples, the sampling average of the sample means would be closer to the population mean.
What does the Central Limit Theorem state?The Central Limit Theorem states that for a random variable X, with mean given by [tex]\mu[/tex] and standard deviation given by [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
This means that over a large number of trials, i.e., of samples from the population, the mean of the sample means will be close to the population mean, with a small standard error, as the standard error is inversely proportional to the square root of the sample size.
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Write the equation of a line given the following information:26) The line has a slope =and passes through (8.-1)27) TH
Answers
Answer:
The equation of the line is;
[tex]y=-\frac{3}{4}x+5[/tex]Explanation:
Given that the line has a slope of;
[tex]m=-\frac{3}{4}[/tex]And passes through the point;
[tex](8,-1)[/tex]Applying the point-slope equation of straight line;
[tex]y-y_1=m(x-x_1)[/tex]substituting the given values and solving;
[tex]\begin{gathered} y-(-1)=-\frac{3}{4}(x-8) \\ y+1=-\frac{3}{4}x-\frac{3}{4}(-8) \\ y+1=-\frac{3}{4}x+6 \\ y=-\frac{3}{4}x+6-1 \\ y=-\frac{3}{4}x+5 \end{gathered}[/tex]Therefore, the equation of the line is;
[tex]y=-\frac{3}{4}x+5[/tex]Which of the following is equivalent to 1-2x > 3(x - 2)?
01-2x > 3x - 7
01-2x > 3x - 6
01-2x > 3x - 2
01-2x > 3x - 5
POSSIBLE POINTS:
Answers
Answer: 01-2x > 3x - 6
Step-by-step explanation: distributive property
If f (x) = 4x2 + 3x − 5, then the quantity f of the quantity x plus h end quantity minus f of x end quantity all over h is equal to which of the following?
4 times the quantity x plus h end quantity squared plus 3 times the quantity x plus h end quantity minus 5 minus 4 times x squared plus 3 times x minus 5 all over h
4 times the quantity x squared plus 2 times x times h plus h squared end quantity plus 3 times the quantity x plus h end quantity minus 5 minus the quantity 4 times x squared plus 3 times x minus 5 end quantity all over h
the quantity 4 times x plus 4 times h end quantity squared plus the quantity 3 times x plus 3 times h end quantity minus 5 minus the quantity 4 times x squared plus 3 times x minus 5 end quantity all over h
4 times the quantity x plus h end quantity squared plus 3 times x minus 5 minus 4 times x squared minus 3 times x plus 5 all over h
Answers
The difference quotient of f(x) is:[ f(x + h) - f(x)]/h = 8x + 4h + 3
How to get the difference quotient?Here we have the function:f(x) =4x^2 +3x - 5
And we want to get the difference quotient that can be written as:
[f(x + h) - f(x)]/h
Replacing the function we get:
[f(x + h) - f(x)]/h = [4*(x + h)^2 + 3*(x + h) - 5 - 4*x^2 - 3x + 5]/h
Solving further (open the brackets), we have
[f(x + h) - f(x)]/h = [4x^2 + 8*x*h + 4h^2 + 3x + 3h -5 - 4x^2 - 3x + 5]/h
Evaluate the like terms
So, we have
[f(x + h) - f(x)]/h = [8*x*h + 4h^2 + 3h]/h
Evaluate the quotients
[f(x + h) - f(x)]/h = 8x + 4h + 3
That is the difference quotient.
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please help me with this question !!
Answers
Answer: The perimeter of the triangle is 69 cm.
Step-by-step explanation:
Let us consider the side of the triangle be 3x ,4x and 5x.
According to the question,
The longest side of the triangle be 30 cm.
. 5x=30cm
x=6 cm
So the side of the triangle are 18cm ,24 cm and 30 cm.
The perimeter of the triangle is the sum of sides of the triangle.
so perimeter is =15+24+30=69 cm
Find the surface area of the rectangular
prism.
Answer:
2 in
4 in
2
2 in
in ²
Answers
Answer:
l = 2 in
h = 4 in
w = 2 in
Surface Area = 40
Step-by-step explanation:
If “l” is the length, and “h” is the height and “w” is the width of the rectangular prism, the surface area is given by the formula,
The surface area of a rectangular prism = 2 (lw+lh+hw) square units.
which hill's criteria, addressing whether the exposure comes before or after the effect, is the only criteria that must be met 100% for a causal relationship to be possible?
Answers
Hill's Criteria of Strength is the only criteria that must be met 100% for a causal relationship to be possible.
The Criteria of strength is Hill's first test for causation. He stated that the likelihood of an association being causative increases with the size of the connection between exposure and disease. Hill used Percival Pott's investigation into the prevalence of scrotal cancer in chimney sweeps to highlight this issue. Since the correlation between that occupation and sickness was so strong (almost 200 times more than in other jobs), it was concluded that chimney soot was probably a contributing factor. On the other hand, Hill argued that minor connections are less indicative of causation since they are more likely to be explained by other underlying factors (such as bias or confounding).
To evaluate possibly causative associations, it is essential to define what is meant by a "strong" correlation. Scientists may now distinguish between strong and weak associations using more mathematically sound criteria than Hill had in mind because of developments in statistical theory and computing capacity. Strength is no longer just understood as an association's magnitude. Furthermore, multi-factorial disorders and the existence of determinant risk variables that are tiny in magnitude but statistically significant have received more attention from researchers. The recognized standard for determining the strength of an observed correlation and, hence, its potential causation, is statistical significance today rather than the magnitude of the association.
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A bee flies at 9 feet per second directly to a flowerbed from its hive. The bee stays at the flowerbed for 18 minutes, and then flies directly back to the hive at 6 feet per second. It is away from the hive for a total of 22 minutes.
a. What equation can you use to find the distance of the flowerbed from the hive?
b. How far is the flowerbed from the hive?
Answers
Using the relation between velocity, distance and time, it is found that:
a. The equation used to find the distance of the flowerbed from the hive is: d = 540 feet per minute x 1.6 minutes.
b. The distance of the flower bed from the hive is: 864 feet.
Velocity, distance and timeVelocity is given by the distance divided by the time, as follows:
v = d/t
In the context of this problem, we have that:
The bee stays at the flowerbed for 18 minutes.The bee stays away from the hive for a total of 22 minutes.The times are as follows:
[tex]t_1[/tex]: hive -> flowerbed.[tex]t_2[/tex]: flowerbed -> hive.The sum of this times is of 22 - 18 = 4 minutes, hence:
[tex]t_1 + t_2 = 4[/tex]
During the first step, that is, from hive to flowerbed, the velocity is 1.5 times greater than during the second step, thus the second time is 1.5 times the first time, that is:
[tex]t_2 = 1.5t_1[/tex]
Then the first time is calculated as follows:
[tex]1.5t_1 + t_1 = 4[/tex]
[tex]2.5t_1 = 4[/tex]
[tex]t_1 = \frac{4}{2.5}[/tex]
[tex]t_1 = 1.6[/tex]
The velocity during this time was of 9 feet per second = 540 feet per minute, for 1.6 minutes, hence the equation is:
d = v x t
d = 540 feet per minute x 1.6 minutes.
d = 864 feet.
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stack of mail consists of 8 bills, 10 letters, and 6 advertisements. One piece of mail is drawn at random and put aside. Then a second piece of mail is drawn. Find P (both are letters)
Answers
INFORMATION:
We know that:
- stack of mail consists of 8 bills, 10 letters, and 6 advertisements.
- One piece of mail is drawn at random and put aside. Then a second piece of mail is drawn.
And we must find P (both are letters)
STEP BY STEP EXPLANATION:
To find the probability, we need to know that we have two events. First, when one piece of mail is drawn at random and put aside and, second, when a second piece of mail is drawn.
These two events are dependent. If A and B are dependent events, P(A and B) = P(A) • P(B after A) where P(B after A) is the probability that B occurs after A has occurred.
So, first
- Probability of A (the first piece is letter)
[tex]P(A)=\frac{favorable\text{ }cases}{total\text{ cases}}=\frac{10}{24}[/tex]- Probability of B after A
Since A already occurred and one piece of the mail was drawn (a letter), now in total we would have 9 letter and 23 total pieces
[tex]P(B\text{ after }A)=\frac{9}{23}[/tex]Finally, replacing in the initial formula
[tex]P(A\text{ and }B)=\frac{10}{24}\cdot\frac{9}{23}=\frac{90}{552}=0.1630[/tex]Finally, the probability would be 0.1630
ANSWER:
P (both are letters) = 0.1630
Solve the inequality and graph the solution on the line provided.
3x+17 _<41
Answers
Answer:
Given, 3x−2<2x+1
⇒3x−2x<1+2
⇒x<3orx∈(−∞,3)
The lines y=3x−2 and y=2x+1 both will intersect at x=3
Clearly, the dark line shows the solution of 3x−2<2x+1.
solution
Step-by-step explanation:
What is the slope of the line through (-1,2) and (-3,-2)? 5 4 3 (-1,2) 1 2 3 4 1 -2 ((-3,-2) O A. 2 O B. O C. - O D.-2
Answers
5/b= 3/b-6
first i cross multiplied as i’m supposed to go and got the answer
5b-30=3b
what steps are next?
Answers
-30 = -2b
Let’s divide both sides by the coefficient now to solve for b:
-30 / -2 = 15
Therefore,
b = 15
How do you solve this
Answers
Answer: wut
Step-by-step explanation: wut
The point where the graphs of two equations intersect has y-coordinate 2. One equation is y = -3 = 5. Find the other equation if its graph has a slope of 1.
Answers
The equation of the line for the given slope 1 is y= x + 2
Equation of the line:
An equation of the line refers the algebraic form of representing the set of points, which together form a line in a coordinate system.
Given,
The point where the graphs of two equations intersect has y-coordinate 2. One equation is y = -3x + 5.
Here we need to find the other equation if its graph has a slope of 1.
We know that, the general representation of equation of line is y= ax + b
where a is the slope and b is the y intercept.
Through the given details we know that the slope of the line is 1 and why is point where two lines intersect hence, it is the intercept.
And the intercept value is 2.
Therefore, the equation of the other line is y= x + 2
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7. It costs $6 to get into the Carnival. Hotdogs cost $1.50 each, Hamburgers cost $1.75 each, French Fries cost $1.05 per
serving, Popcorn cost $1.15 per bag, and Soda is $.75 each. Each ride costs $2.00. How much money would you need to
get into the Carnival and to go on 8 rides, eat 2 hotdogs, 1 order of Fries, 2 bags of Popcorn, and 1 Soda?
Answers
Answer: $29.10
Step-by-step explanation:
1. Make a table, like the one shown in the image. You will need the item, its price, and how many are being bought.
2. Multiply the price and quantity of each item that is being bought.
3. Add all of the products together. This should get you the final price.
My steps are in the image. Hope this helps!
Area of sector in degrees. My answer is 25 pi I just want to check and make sure that’s right
Answers
1) The area of a sector of a circle can be found with the following formula:
[tex]\begin{gathered} A_S=\frac{\alpha}{360}\cdot\pi r² \\ A_s=\frac{90}{360}\dot{\cdot\pi(10)²} \\ A=\frac{\dot{100\pi}}{4} \\ A=25\pi \\ \end{gathered}[/tex]2) Thus the area of the sector is 25π cm²
A basketball player's shooting percentage was 0.425 at the end of the season. What does that mean? (1) He made 4.25% of the baskets he attempted. (2) He made 4 out of every 25 baskets he attempted. (3) He made 42.5% of the baskets he attempted. (4) He made 17 out of every 40 baskets he attempted
Answers
shooting percentage: 0.425 (decimal)
To express in percentage:
0.425 x 100 = 42.5%
(3) He made 42.5% of the baskets he attempted.
And also
17/40 = 0.425
(4) He made 17 out of every 40 baskets he attempted
Suppose each street in the map shown represents a line. Provide an example of
each angle relationship.
Vertical angles
Supplementary
angles
Linear pair
Adjacent angles
Vertical angles
Congruent angles
10
15
16
11
12
17
18
Willow Drive
4
8
13 14 Franklin Drive
19 20
21
23
Sixth Ave
Main Street
22 Fifth Ave
24
Answers
Vertical angles are : 1 and 6
supplementary angles : 1 and 2
linear pair : angle 4 and 8
adjacent angles: 21 and 22
What is a supplementary angle?A supplementary angle is an angle that, when added to another angle, results in a total angle measure of 180 degrees. In other words, if two angles are supplementary, the sum of their angle measures will be equal to 180 degrees.
For example, if angle A measures 100 degrees, its supplementary angle B would measure 80 degrees, since 100 + 80 = 180. Conversely, if angle B measures 120 degrees, its supplementary angle A would measure 60 degrees, since 120 + 60 = 180.
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[tex]\sqrt{x} ^2+2x-3[/tex]
Answers
The result of the expression given is 3x - 3
Simplification of Linear EquationTo solve this problem, we have to simplify the equation, and write the expression.
Given that
[tex]\sqrt{x^2}+ 2x -3[/tex]
For every square root having a square inside, they both cancel out each other to have the variable only.
Lets apply that in this expression
[tex]\sqrt{x^2} + 2x - 3\\x + 2x - 3[/tex]
To solve the expression, we would have the final answer to the question.
[tex]x + 2x - 3\\3x - 3[/tex]
The value of the expression given is 3x - 3
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what is the answer to 2y=3x+4
Answers
Answer:
y = (3/2)x + 2
assuming that the question is to find y in its simplest form.
Step-by-step explanation:
2y=3x+4
(1/2)*(2y)= (1/2)*(3x+4)
y = (3/2)x + 2
Got another one for yall
Answers
The height, h of the parallelogram is 4 feet.
How to find the height of a parallelogram?A parallelogram is a quadrilateral with opposites sides equal to each other. Opposite sides of a parallelogram are also parallel to each other.
Opposite angles of a parallelogram are congruent. The consecutive or adjacent angles of a parallelogram is supplementary.
Therefore, the height of the parallelogram can be found as follows:
The sum of angles in a parallelogram is 360 degrees.
Hence,
sin ∅ = opposite / hypotenuse
where
∅ = one angle of the parallelogramsin ∅ = 3 / 6
sin ∅ = 1 / 2
∅ = sin⁻¹ 0.5
∅ = 30
Therefore,
30 + 30 + 2x = 360
where
x = angle of the parallelogram60 + 2x = 360
2x = 360 - 60
2x = 300
x = 300 / 2
x = 150
Let's find the height of the parallelogram using trigonometric ratios,
sin 30° = h / 8
cross multiply
h = 8 sin 30°
h = 8 × 0.5
Therefore,
h = 4 ft
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Whats the answer to this -11 + 2x
A.-10
B.9
C.-12
D.6
Answers
Because we are simplifying it
how many lines of symmetry does the word checkbook have?
Answers
Answer:
none (as shown) or
one if all uppercase letters
Step-by-step explanation:
A line of symmetry is a line you could place on a shape (usually a square, rectangle, triangle, etc, but here the "shape" is the word checkbook) which, if you folded the shape on the line, the two halves of the shape would exactly match each other.
"checkbook" does NOT have any lines of symmetry. BUT,
CHECKBOOK
does have a line of symmetry, horizontally, right thru the middle.
y = 2x + 3
when x = -1, y =
Answers
Answer: y = 1
Step-by-step explanation:
y = 2(-1) +3
y = -2 + 3
y = 1
A ball is dropped from a tall building. the formula in the box relates the distance in meters {d} fallen to the time in seconds, {t}. d=4.9t if the ball falls for a total of 1.2 seconds before hitting the ground, approximately how tall is the building?
Answers
The building is 5.88 units tall.
It is given that the ball is dropped from a tall building.
The formula in the box relates the distance in meters "d" fallen to the time in seconds "t".
The formula is given below :
d = 4.9*t
The ball falls for a total of 1.2 seconds before hitting the ground.
The ball will travel a distance in the time interval from when the ball is dropped until it hits the ground.
The time for which the ball travels the distance is 1.2 seconds.
The distance travelled by the ball is :
d = 4.9*t
d = 4.9*1.2
d = 5.88
Hence, the ball travels a distance of 5.88 after it is dropped from the top of the building and before hitting the ground.
The height of the building is equal to the distance calculated.
The height of the building is 5.88.
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What is the answer to the following calculation, rounded to the correct number of significant figures?100.000 g+ 75.0 g
Answers
Answer:
175g
Step-by-step explanation:
100.000g+75.0g= 175g
ps. pls give brainliest answer :)
The sum of the numbers 100.000g and 75.0g in expression is 175g.
What are mathematical operations?Calculate the answer using a math operator is referred to as a mathematical operation.
Basic mathematical operations are addition, multiplication, subtraction and division.
The given numbers are,
100.000g and 75.0g
The zeros can be neglected after decimal points,
So the numbers can be written as,
100g and 75g.
To find the required expression, add 100g and 75g.
100g + 75g = 175g.
The required sum of the numbers is 175g.
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Alan, Betty, and Carol invested in a corporation in the ratio of 9:10:11 respectively. If they divide the profit of $67, 500 proportionally to their investment, how much will each receive?
Answers
Three people: Alan, Betty, Carol
Alan has 9 shares.
Betty has 10 shares.
Carol has 11 shares.
Therefore, there are a total of 9 + 10 + 11 = 30 shares.
Since the profit is $67,500, let's divide this one by the total number of shares.
[tex]\text{Profit per share}=\frac{67,500}{30}=2,250[/tex]The profit per share is $2,250.
Since Alan has 9 shares, let's multiply $2,250 to 9.
[tex]\text{Alan's share}=2,250\times9=20,250[/tex]Therefore, Alan's share must be $20,250.
Let's do the same with Betty and Carol.
[tex]\text{Betty's share}=2,250\times10=22,500[/tex][tex]\text{Carol's share}=2,250\times11=24,750[/tex]To summarize, Alan will receive $20,250, Betty will receive $22,500, and Carol will receive $24,750 from the proft
Which of the following is true?
Answers
A function is a reletion with one output for each input. Then, in a ordered pair inputs and outputs represent a relationship between two values.
Some relationships make sence (one output for each input) and others dont't.
Functions are relationsips that make sence.
All functions are relations, but not all relations are functions(a+6)-(a+2)Simplify
Answers
Answer: 4