The solution to the system is (7.5, 1)
How to determine the solution to the systemFrom the question, we have the following parameters that can be used in our computation:
2x−3y=12
−12y+8x=48
divide the first equation by 2
So, we have
x - 1.5y = 6
This gives
x = 6y + 1.5
By substitution, the second equation becomes
-12y + 8 (6y + 1.5) = 48
So, we have
-12y + 48y + 12 = 48
Evaluate
36y = 36
Divide by 36
y = 1
So, we have
x = 6 + 1.5
x = 7.5
Hence, the solution is (7.5, 1)
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a movie theater has 7 shows a day 4 days per week and 11 shows a day 2 days per week together how many shows in 6 days
The movie theater will have 50 shows in 6 days
To find the total number of shows in 6 days, we need to calculate the number of shows for each type of day (4 days per week with 7 shows per day and 2 days per week with 11 shows per day) and then add them together.
First, let's calculate the number of shows for the 4 days per week with 7 shows per day:
4 days per week x 7 shows per day = 28 shows per week
Next, let's calculate the number of shows for the 2 days per week with 11 shows per day:
2 days per week x 11 shows per day = 22 shows per week
Now, we can add the number of shows for each type of day together to find the total number of shows in 6 days:
28 shows per week + 22 shows per week = 50 shows in 6 days
We used multiplication to calculate the number of shows per week for each type of day (by multiplying the number of days by the number of shows per day) and then added the two results together to find the total number of shows in 6 days.
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Can someone explain to me why the answer is 90 and not 1080? I think it has to do with the inches and ft. But I don’t remember how you solve it.
Answer:
You are correct
Step-by-step explanation:
You are correct sir. They want the answer in feet, so everything on that triangle has to be converted into feet.
There are 12 inches in a foot. If we do 108/12 we get 9 feet.
Water is being drained from a container which has the shape of an inverted right circular cone. The container has a radius of 6.00 inches at the top and a height of 10.0 inches. At the instant when the water in the container is 8.00 inches deep, the surface level is falling at a rate of 0.9 in./sec. Find the rate at which water is being drained from the container.
The rate at which the water flow from the given volume is 21.72 in³/sec
What is rate at which the water flowTo find the rate at which water is being drained from the container, we first need to find the rate at which the water level is falling and then use that to calculate the volume of water being drained per unit of time.
We know that the surface level is falling at a rate of 0.9 inches per second and that the container has the shape of an inverted right circular cone. The volume of a cone is given by the formula:
V = (1/3) * π * r^2 * h
Where V is the volume, π is pi (approximately 3.14), r is the radius of the base, and h is the height of the cone.
We can use this formula to find the volume of the container when the water level is 8 inches. The radius at this point is 6 * (8/10) = 4.8 inches and the height is 8 inches.
V = (1/3) * π * (4.8 inches)^2 * 8 inches = 193.02 inches³
Now that we know the volume of the container when the water level is 8 inches, we can use the rate at which the water level is falling (0.9 inches per second) to find the rate at which the water is being drained.
The rate at which water is being drained = rate of change of volume / rate of change of height = dV/dt = dV/dh * dh/dt = -dV/dh * dH/dt
Where dV/dh is the derivative of volume with respect to height, dH/dt is the rate of change of height.
-dV/dh = -(1/3) * π * (4.8 inches)^2 = -24.13 in³
dH/dt = -0.9 inches/sec
The rate at which water is being drained = -dV/dh * dH/dt = -24.13 * -0.9 inches/sec = 21.72 in³/sec
So the rate at which water is being drained from the container is 21.72 in³/sec
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What is 0.55 times 20.1?
(With work pls)
Answer:
0.55 times 20.1 is equal to 11.055
Step-by-step explanation:
To show work, we can simply multiply 0.55 by 20.1 using long multiplication.
0.55
20.1
0.55
+11.05
11.055
So 0.55 times 20.1 is equal to 11.055
If the coordinates of a quadrilateral composed in the first quadrant of the coordinate plane are (0,0), (a,b), (a+c,b), and (c,0), which is the most accurate classification of the quadrilateral?
a. trapezoid
b. rectangle
c. parallelogram
d. square
the opposite sides of the quadrilateral PQRS are equal and parallel and so PQRS is a PARALLELOGRAM.
Option (C) is CORRECT.
What are coordinates?A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.
Given, that the coordinates of the vertices of a quadrilateral composed in the first quadrant of the coordinate plane are (0,0) (a, b), (a + c, b), and (c, 0).
We are to select the most accurate classification of the quadrilateral.
Let the coordinates of the vertices of the quadrilateral be P(0,0), Q(a, b), R(a + c, b), and S(c, 0).
The lengths of the sides are calculated using the distance formula as follows :
PQ = √(a² + b²)
QR = √(a +c -a)² + (b-b)² = √c² = c
RS = √(a² + b²)
SP = c
So, the opposite sides are equal in length.
And, the slopes of the sides are calculated as follows :
The slope of PQ(m₁) = (b-0)/(a-0)
The slope of QR(m₂) = (b-b)/(c-a-c) = 0
The slope of RS(m₃) = 0-b/(c-a-c) = 0
The slope of SP(m₄) = (0-0)/(0-c) = 0
So, the slopes of the opposite sides are equal but:
m₁ *m₂ = 0 ≠ -1
m₃ *m₄ = 0 ≠ -1
Therefore, the opposite sides of the quadrilateral PQRS are equal and parallel and so PQRS is a PARALLELOGRAM.
Option (C) is CORRECT.
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A piece of material measures 38 inches. Courtney cuts the piece of material into two pieces. One piece measures 19 inches. Write an addition equation that could be used to find the length, m, of the other piece of material.
Answer:
As a whole, the piece first measured 38 inches. No matter how many times you cut it, all of the pieces will still add up to 38 inches. You know that 19 inches is the length of one of the two pieces, so all you need to find is the other unknown piece. Add the two together, with m being the unknown length.
19+m=38
If you want to solve the equation, just subtract 19 from both sides.
19+m=38
m=19
Chapter 6
Lesson 2 skills practice numerical expressions
The Numerical Expressions answers are shown below:
What is Integers?Integers come in three types:
Zero (0)Positive Integers (Natural numbers)Negative Integers (Additive inverse of Natural Numbers)Given:
1. 7-6+ 5
= 7 -1
= 6
So, the value of 7-6+ 5 is 6.
2. 31 +19 -8
= 31 + 11
= 42
So, the value of 31 +19 -8 is 42.
3. 64-8+21
= 56 + 21
= 77
So, the value of 64-8+21 is 77.
4. 17+34-2
= 51-2
= 49
So, the value of 17+34-2 is 49.
5. 28+ 89 -67
= 117-67
= 50
So, the value of 28+ 89 -67 is 50.
6. (8+1) x 12- 13
= 9 x 12 -13
= 108 - 13
= 95
So, the value of (8+1) x 12- 13 is 95.
7. 63/9 +8
= 7 +8
= 18
So, the value of 63/9 +8 is 18.
8. 5 x 6 -(9-4)
= 5x 6 - 5
= 30- 5
= 25
So, the value of 5 x 6 -(9-4) is 25.
9. 13x 4 -72 /8
= 13 x 4 - 9
= 52- 9
= 43
So, the value of 13x 4 -72 /8 is 43.
10. 16/2 + 8 x 3
= 8 + 8 x 3
= 8+24
= 32
So, the value of 16/2 + 8 x 3 is 32.
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in the x y coordinate plane, which of the following points must lie on kx + 3y + 6 if k = -1/2
Answer:
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Step-by-step explanation:
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An aspiring figure skater named Anthonia has been working on her triple axel jump. She lands it 33.33% on average. Her competition, Zahra, has also been working on her triple axel jump averaging 45% of successful lands. If both are competing at the same event, what is the probability that Anthonia will land her jump and Zahra will not land her axel jump?
If Anthonia and Zahra compete at the same event, the probability that Anthonia will successfully land her jump and Zahra will not land hers is 18.33%.
What is the probability?We describe probability as the chance or likelihood that an expected event occurs when there are many possible outcomes.
Probability lies between one and zero when it is not 100% certain or uncertain.
The probability that Anthonia lands her triple axel jump = 33.33%
The chance that Anthonia does not land her jump = 66.67% (1 - 33.33%)
The likelihood of Zahra landing her jump successfully = 45%
The odds that Zahra will not successfully land her jump = 55% (1 - 45%)
The probability that Anthonia lands successfully while Zahra does not = 18.33% (33.33% x 55%)
Thus, Anthonia has the chance of winning Zahra at 18.33%.
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Find the plane determined by the intersecting lines.
L1 x= -1 + 3t y = 2+2t z=1-t
L2 x=1-4s y=1+2s z=2-2s
In a plane, intersecting lines are any two or more lines that cross each other. The point of intersection is the common point shared by all intersecting lines.
What are Intersecting Lines?In a plane, intersecting lines are those that cross one another three times or more. The point of intersection is the shared location between all intersecting lines that exists on all intersecting lines.Point O represents the point of intersection where lines P and Q meet in this instance.Specifications of intersecting linesWhen two or more lines intersect, they always do so at the same location.Any angle may be used to intersect the lines. Always more than 0° and less than 180° is the angle that is generated.Vertical angles are created by two intersecting lines. There is a common vertex between the opposing vertical angles (which is the point of intersection).Vertical angles a and c are equivalent in this case. Additionally, b and d have equal vertical angles and are vertical angles.A plus D equals a straight angle of 180 degrees.To Learn more About intersecting lines refer To:
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A line passes through the point(-8, -9) and has a slope of Write an equation in slope-intercept form for this line. -5/4
Answer:
y = (-5/4)x - 19
Step-by-step explanation:
Given information,
→ Slope(m) = -5/4
→ Point = (-8, -9)
→ y-intercept = b
The slope-intercept form is,
→ y = mx + b
Now the y-intercept will be,
→ y = mx + b
→ -9 = (-5/4)(-8) + b
→ -9 = 10 + b
→ b = -9 - 10
→ [ b = -19 ]
Then the required equation is,
→ y = mx + b
→ [ y = (-5/4)x - 19 ]
Hence, this is the equation.
Tarmu run 30 min and burned 170 calories. Write an equation that represents the number of calories,c, burned per min
c=170/30 is the equation that represents the number of calories,c, burned per min.
What is Division?A division is a process of splitting a specific amount into equal parts.
Given that Tarmu run 30 min and burned 170 calories
We need to find the equation that represents the number of calories, c, burned per min.
To find the calories burned in each minute we have to divide one hundred seventy by thirty.
c=170/30
c=5.66 cal/min
Hence, c=170/30 is the equation that represents the number of calories,c, burned per min.
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Find the measure of the angle. Round to the nearest degree
Answer:
59.036
Step-by-step explanation:
tanΘ = opposite/adjacent
Θ =tan⁻¹(opposite/adjacent)
tan⁻¹(10/6) - 59.03624347
X+6y=-2 show ur work
The equation when making x the subject is X = -2 - 6y
How to make x the subjectTo do this, we would have to take the values that are in the left hand side to the right hand side. When we do this, the signs on the left hand side would have to change
X+6y=-2
we have to take +6y to the right hand side.
When the positive sign crosses the equal sign it becomes negative
X = -2 - 6y
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X+6y=-2 show ur work make x the subject
Luke says 1/5 +2/5 =3/10 Describe the error .
Rosa gasto 11.52 en 8 collares de dulces para cada una de sus dos amigas cuánto costó cada collar
Answer:
1.44
Step-by-step explanation:
11.52/8=1.44
A bakery used 30% more sugar this month than last month.If the bakery used 560 kilograms of sugar lost month,how much did it use this month?
728 kilograms of sugar is used in this month.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that a bakery used 30% more sugar this month than last month.
Let us convert 30% to decimal.
Divide 30 by 100
30/100=0.3
the bakery used 560 kilograms of sugar last month we have to find the amount of sugar used this month.
Now multiply 30% of 560
0.3×560
168.
So now 560+168=728 is the amount of sugar used this month.
Hence, 728 kilograms of sugar is used in this month.
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What is the equation of the line that passes through the point (8, 4) and has a slope
of o?
The equation of the line passing through the point (8, 4) and having a slope of 0 is y = 4.
What is the slope intercept?
The slope-intercept form of a linear equation is y = mx + b, where m is the slope of the line and b is the y-intercept (the point where the line crosses the y-axis).
The line passing through the point (8, 4) and having a slope of 0 is a horizontal line which is parallel to the x-axis. The slope (m) of this line is 0.
The point-slope form of this line would be:
(y - 4) = 0(x - 8)
Simplifying this, we get:
y = 4
Hence, the equation of the line passing through the point (8, 4) and having a slope of 0 is y = 4.
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please solve quickly! (15 points)
Answer:
Step-by-step explanation:
36
(
x
+
3
)
2
(
x
−
3
)
2
QUICK!!! WHAT IS -2 2/5 times -1/3
(Please show work)
You and your family go to dinner at a local restaurant in Rexburg, Idaho and your online banking report shows that the total dinner bill (food, tax, and tip) was for $42. Suppose that you did not keep your receipt, but you remember you paid a 20% tip for the service.
What was your bill (food and tax) prior to calculating the tip? (tip was paid on the total of food and tax)
$
Number
(Round your answer to the nearest cent.)
ow many ways can you select 7 cookies to buy from a bakery that sells cookies of 3 different flavors (oatmeal, chocolate chip, almond)? we assume that more than 7 cookies are displayed for each flavor. for example, one way is to choose 7 chocolate chip cookies
There are 2187 combinations to select 7 cookies from a bakery that sells cookies of 3 different flavors (oatmeal, chocolate chip, almond).
When selecting 7 cookies from a bakery that sells 3 different flavors, each cookie selected can be one of the 3 different flavors. This means that for the first cookie, there are 3 choices, for the second cookie, there are also 3 choices, and so on for the 7th cookie. This is known as the combinations formula and it can be represented as 3 x 3 x 3 x ... x 3 (3 being repeated 7 times).
Using the 3⁷ formula, we can calculate that there are 2187 ways to select 7 cookies from a bakery that sells cookies of 3 different flavors. This means that there are 2187 unique combinations of cookies that can be selected, assuming that more than 7 cookies are available for each flavor.
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Your question seems incomplete, but I assume the question was:
"How many ways can you select 7 cookies to buy from a bakery that sells cookies of 3 different flavors (oatmeal, chocolate chip, almond)? We assume that more than 7 cookies are displayed for each flavor. For example, one way is to choose 7 chocolate chip cookies."
vertex to standard form
The quadratic function y = 7(x + 1)² + 1 in standard form is y = 7x² + 14x + 2.
What is a quadratic function?
A polynomial function with one or more variables, where the largest exponent of the variable is two, is referred to as a quadratic function. It is also known as the polynomial of degree 2 since the greatest degree term in a quadratic function is of second degree.
The given quadratic function is -
y = 7(x + 1)² + 1
Solve the equation to get the standard form.
First solve using the formula (a + b)² = (a² + 2ab + b²) -
y = 7(x + 1)² + 1
y = 7(x² + 2x + 1) + 1
Now, open the brackets -
y = 7x² + 14x + 1 + 1
Now, add the like terms -
y = 7x² + 14x + 2
Therefore, the value is obtained as 7x² + 14x + 2.
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given that we assume that all numbers are distinct, explain why it is without loss of generality to assume that a > d
Since it has no impact on the result or solution of the problem, assuming that a > d does not reduce the generality of the statement. If a > d, the issue can be solved by simply swapping the values of a and d.
It makes no difference to the problem whether an is more or less than d because we are presuming that each integer is distinct. Furthermore, by supposing that a > d, the problem's variables can be arranged consistently, making it simpler to comprehend and resolve. As a result, making the assumption that a > d does not reduce the generality of the solution because the problem remains the same and the assumption may be readily changed if necessary.
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Tyrone put 1/3 teaspoon of salt in a batch of cookie dough. He thought that might not been enough salt, so he added another 1/4 teaspoon. How much salt did Tyrone use in total?
Answer:
7/12 of salt.
1/4 + 1/3 =
1/3 + 1/4 =
4/12 + 3/12 = 7/12.
Step-by-step explanation:
Hope it helps! =D
6-7 Collisions and Explosions (1-D)
1. A flatcar with mass M, traveling at speed v, collides with and couples to a parked
boxcar. They move off together with a speed of 1/3 v. What is the mass of the boxcar?
They move off together with a speed of 1/3 v,The mass of the boxcar is m/3 (V₁ - V₂)².
What is mass?A body's mass is an inherent quality. Prior to the discovery of the atom and particle physics, it was widely considered to be tied to the amount of matter in a physical body.
in Kinetic energy 4 system, the
K = Kf-Ki
K = 1 (Mcar + Mtruck) Vp ² + mcarv₁_ J 2 2 + Mtruck V2 2 2
K = +(m+2m) (V₁+2√2)² +mv₁² - 1 x 2m v₂ ² 2 2 9
K m (v, ² + 4 √₂ ² + AV₁ V2 ) - { mv, ² - tn v₂ 2 2 6
K = m (V₁²+ 4V₂² + 4 V₁ V2 -1/3V, ² - 6V, ²) /6.
K = m/6 (4V₁V2.-2V₁2-2√22)
k = + m/3 (V₁ - V₂)²
They move off together with a speed of 1/3 v, The mass of the boxcar is m/3 (V₁ - V₂)².
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Please help!!
Find the third, fourth, and tenth terms of the sequence described by the rule.
A(n) - 3+ (n-1)(5)
A(3)=
A(4)=
A(10)=
Answer:
A(3) = 13
A(4) = 18
A(10) = 48
Step-by-step explanation:
This seems like a plug and play.
Starting with A(3). Everywhere you see an n, you'll replace it with a 3, as follows;
3 + (3-1)(5) = ?
We'll solve it step by step. First is 3-1. That's 2, bringing it to
3 + (2)(5).
2 times 5 is 10, bringing it to
3 + 10.
3 + 10 = 13, which concludes
A(3) = 13.
Now doing it for the remaining 2.
3 + (4-1)(5)
3 + (3)(5)
3 + 15
A(4) = 18
Last one...
3 + (10-1)(5)
3 + (9)(5)
3 + 45
A(10) = 48
Kimiyo earns a weekly salary of $675 plus a 6.5% commission on sales at a gift shop. How much would she make in a work week if she sold $4,800 worth of merchandise?
Kimiyo would make $987 in a work week if she sold $4,800 worth of merchandise.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given:
Kimiyo earns a weekly salary of $675 plus a 6.5% commission on sales at a gift shop.
She sold $4,800 worth of merchandise.
That means,
the commissioned amount = 4800 x 6.5 /100
The commissioned amount = $312
In a week,
Kimiyo's total earning is,
= $675 + $312
= $987
Therefore, $987 is the total salary.
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32.- The high costs of the California real estate market have caused families who cannot afford to buy larger houses to consider backyard sheds as an expansion option. Many are using their patio structures to build their studios, art rooms, and hobby areas, as well as for additional storage. The median price for a custom-built backyard clapboard frame is $3,100 (Newsweek, September 29, 2003). Assume that the standard deviation is $1,200.
A)¿Cuál es el valor z para una estructura de patio trasero que cuesta $2 300?
b) ¿Cuál es el valor z para una estructura que cuesta $4 900?
C) Interprete los valores z en los incisos a) y b). Comente si alguna debe considerarse una observación atípica.
D) El artículo de Newsweek describió una combinación de oficina en el cobertizo del patio trasero construida con $13 000 en Albany, California. ¿Esta estructura debe considerarse una observación atípica? Explique por qué.
a) The z-score for a structure costing $2,300 is given as follows: -0.67.
b) The z-score for a structure costing $4,900 is given as follows: 1.5.
c) The interpretation of each z-score is given as follows:
A structure costing $2,300 has the price 0.67 standard deviations below the mean, and the cost is not unusual.A structure costing $4,900 has the price 1.5 standard deviations above the mean, and the cost is not unusual.d) The structure would have an unusual price, as the z-score has an absolute value greater than 2.
How to obtain the z-scores?The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.Using the z-score table, the p-value associated with the calculated z-score is found, and it represents the percentile of the measure X in the distribution.A mesure X is considered unusual if the z-score has an absolute value greater than 2.The mean and the standard deviation for this problem are given as follows:
[tex]\mu = 3100, \sigma = 1200[/tex]
For item a, the z-score is then given as follows:
Z = (2300 - 3100)/1200
Z = -0.67.
For item b, the z-score is then given as follows:
Z = (4900 - 3100)/1200
Z = 1.5.
For the price of $13,000, the z-score is given as follows:
Z = (13000 - 3100)/1200
Z = 8.25.
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please help will mark BRAINLIEST
The sum of the angles formed on the same side of the transversal which are inside the two parallel lines is always equal to 180°
What exactly is the degree formula?
Yes, we can use the radian-to-degree formula to convert a negative radian to a degree. Degrees = Radians 180 / is the formula, and it may be used for both positive and negative values. Parallel lines are lines that are always the same distance apart in a plane. Parallel lines never cross. Perpendicular lines are those that connect at a straight angle (90 degrees).
These are referred to as parallels. A circle of latitude is an imaginary ring that connects all places that share a parallel. The Equator is the 0 degree latitude line. Each parallel is one degree north or south of the Equator, with 90 degrees north and 90 degrees south respectively.
Hence, The sum of the angles formed on the same side of the transversal which are inside the two parallel lines is always equal to 180°
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