MATHEMATICS HIGH SCHOOL

Let x represent the number of quick washes and let y represent the number of premium washes. which system of linear equations represents the situation? 5x 8y = 775 and x y =125 5x â€"" 8y = 125 and x y = 775 5x 8y = 775 and x â€"" y = 125 5x â€"" 8y = 125 and x â€"" y = 775

Answers

Answer 1
Answer:

The system of linear equations that models the situation is given as follows:

  • x + y = 125.
  • 5x + 8y = 775.

What is the system of equations?

As stated in the problem, the variables of the system are given as follows:

  • Variable x: number of quick washes.
  • Variable y: number of premium washes.

They washed 125 cars, hence the first equation is defined as follows:

x + y = 125.

They made $775 from a combination of $5.00 quick washes and $8.00 premium washes, hence the second equation is given as follows:

5x + 8y = 775.

Missing Information

The complete problem is described as follows:

"Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $775 from a combination of $5.00 quick washes and $8.00 premium washes."

More can be learned about a system of equations at brainly.com/question/24342899

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Answer 2
Answer:

Answer:

The answer is indeed A.

Step-by-step explanation:

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Porfavor alguien me dice cuanto es esto 3×?=20​

Answers

Answer:

es imposible

Step-by-step explanation:

3x7=21

se va por uno

Answer:

6.66666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666

Step-by-step explanation:

Que no se te olvide el punto

6(7a-10) how do I solve this

Answers

6(7a-10) \n \n 6 * 7a + 6 * -10 \ / \ distribute \n \n 42a + 6 * -10 \ / \ simplify \n \n 42a + -60 \ / \ simplify \n \n 42a - 60 \ / \ simplify \n \n Answer: \fbox {42a - 60}
solve the brackets, to do that you should multiply the numbers inside the bracket with the first number outside and in the right to the brackets.so,

6(7a-10)= 42a-60
hence the answer is, 42a-60

If EG and HJ are parallel lines and m

Answers

The measure of ∠ JIK is 122°

What are corresponding angles?

Corresponding angles are angles that occur on the same side of the transversal line and are equal in size.

Given that, EG and HJ are parallel lines and m is transversal

∵ ∠ GFI and ∠ JIK are corresponding angles, and corresponding angles between two parallel lines are equal.

∴ m ∠ GFI = m ∠ JIK = 122°

For more references on corresponding angles, click;

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Answer:

m JIK = 122°

Step-by-step explanation:

HERE, L || M

So, m JIK = m GFI

( since they are corresponding angles pair )

so, m JIK = 122°

Sandra conducted an observational study to learn how relationships with family affect happiness. She surveyed 500 people in her hometown and found that 85% say that positive relationships with family members make them happy. What could be the conclusion of her study?

Answers

She may conclude that in her hometown, a majority of people experience greater happiness thanks to positive relationships. However, in order to apply this to a greater population, she will have to use a larger sample of people.
Since this is an observational study and not an experiment, she can only conclude that there may be a link between closeness with family and happiness but we cannot say that closeness with family results in happiness.

ANYONE???????? PLZ HELP ASAP:Indicate in standard form the equation of the line through the given points.
K(6, 4), L(-6, 4)

Can you lead me through the steps because I'm not getting this at all...

Answers

Equation of a straight line: y = mx + c. m is the gradient while c is the y-intercept.
gradient m = (y2 - y1) / ( x2 - x1)
from the given coordinates, x1 = 6, x2 = -6, y1= 4, y2 = 4
m = (4 - 4) / ( -6 - 6) = 0/12 = 0
to find y- intercept, we solve for c using any of the given coordinates.
4 = 0x + c
c = 4
the equation of the line: y = 0x + 4
Standard form = ax + by = c
0x + y = 4
y = 4

Solve for x.

A) 10.5
B) 10
C) 6√3
D) 20

Answers

There are three right triangles in this figure.  Set up Pythagorean theorem for each of them.
Let y be the altitude of the largest triangle.
Let z be the left side.
We have for large triangle:
x² + z² = (9+3)²
For left sub-triangle:
y² + 3² = z²
For right sub-triangle:
y² + 81 = x²

So the three equations are
x² + z² = 144
y² + 9 = z²
y² + 81 = x²

Solve last equation for y², plug into second equation, solve that for z² in terms of x², and lastly plug z² into the first equation to find
x² + x² - 72 = 144
2x² = 216
x² = 108
x = √108 = √(36·3) = 6√3

The answer is C) 6√3
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