Help please asap thanks

Trisha and Byron are washing and vacuuming cars to raise money for a class trip. Trisha raised $38 washington 5 cars and vacuumi

pshichka [43]

Answer:

The amount they charged to wash a car is $6 and vacuum a car is $2.

Step-by-step explanation:

Given:

Trisha and Byron are washing and vacuuming cars to raise money for a class trip.

Trisha raised $38 washington 5 cars and vacuuming 4 cars.

Byron raises $28 by washing 4 cars and vacuuming 2 cars.

Now, to find the amount they charged to wash a car and vacuum a car.

Let the amount charged for washing a car be $x.$

And the amount charged for vacuuming a car be $y.$

So, the total amount Trisha raised:

$5x+4y=38.$ .......(1)

And, the total amount Byron raised:

$4x+2y=28.$

Now, to get the amount they charged to wash a car and vacuum a car we use elimination method:

$5x+4y=38\\4x+2y=28......\times 2$

$5x+4y=38\\8x+4y=56$

$-3x=-18$

$3x=18$

Dividing both sides by 3 we get:

$x=6.$

Amount charged to wash a car = $6.

Now, putting the value of $x$ in equation (1) we get:

$5(6)+4y=38.$

$5\times 6+4y=38$

$30+4y=38.$

Subtracting both sides by 30 we get:

$4y=8.$

Dividing both sides by 4 we get:

$y=2.$

Amount charged to vacuum a car = $2.

Therefore, the amount they charged to wash a car is $6 and vacuum a car is $2.

5 0

3 years ago

Which number is equivalent to 4/5?

galben [10]

The answer is D . (0.8)

3 0

3 years ago

Read 2 more answers

How do I solve this equation?

Alenkinab [10]

Answer:

Step-by-step explanation:

This is an inequality, not an equation. There will be a set of x-values for which the inequality will be true.

First eliminate the fractional coefficient 2/5 by multiplying all terms by 5:

25 < 2x + 15 ≤ 75

Subtracting 15 from each 5, (2/5)x, 3 and 15 yields:

22 < 2x ≤ 60

Dividing all three terms by 2, we get:

11 < x ≤ 30

Thus, any number greater than 11 but equal to or less than 30 is a solution.

7 0

3 years ago

What is the unit price for an ounce of coffee if a 120-ounce package costs $9.60? answers

ASHA 777 [7]

_______________________________

Hey!!

Solution,

cost of 120 ounce of coffee= $9.60

cost of an ounce of coffee= 9.60/120

 =$ 0.08

Hope it helps

Good luck on your assignment

_____________________________

5 0

3 years ago

Read 2 more answers

At how many points does the graph of the function below intersect the x-axis?

Angelina_Jolie [31]

Setting y=0, we can solve the quadratic equation or factor the polynomial to
(5x-1)•(5x-1) = 0
(5x-1)^2 = 0
5x-1=0
x=1/5 or 0.2
So there is only one root and the function intersects the x-axis at only one point.
The answer is B. 1.

6 0

3 years ago