3 years ago

cristobal took 3 hours to wash 5 cars. at this rate,how many card could he wash over a period of 45 hours?

Mathematics

1 answer:

MArishka [77]3 years ago

8 0

75 cars is the answer.

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Please answer and put how

muminat

6 + m/4 = 3 (subtract 6 from both sides)
m/4 = -3 (multiply both sides by 4)
m = -12

Can plug in to original equation to check work:
6 - 12/4 = 3
6 - 3 = 3
3 = 3

The answer m = -12 checks out

3 0

3 years ago

Read 2 more answers

What numbers add up to 3 but multiply -18

mariarad [96]

Answer:

-3 and 6

Step-by-step explanation:

-3 + 6 = 3

-3 * 6 = -18

3 0

3 years ago

What’s the answer pleazzzzz helplllllll 9m^2-4m-6 by 3m

dlinn [17]

Answer

D. 3m - 4/3 -2/m

<u>Explanation</u>

(9m²-4m-6) ÷ 3m = 9m²/3m - 4m/3m - 6/3m

Carry out the division, each term is divided by 3m.

9m²/3m = 3m

- 4m/3m = -4/3

- 6/3m = - 2/m

Finally you will get,

5 0

3 years ago

(x - 2)² + 6x – 7 Which of the following is equivalent to

podryga [215]

Answer:

$x^2 +2x-3$

Step-by-step explanation:

Given

$(x - 2)\² + 6x - 7$

Required

The equivalent

We have:

$(x - 2)\² + 6x - 7$

Expand

$(x - 2)\² + 6x - 7 = x^2 -2x-2x +4 +6x - 7$

Collect like terms

$(x - 2)\² + 6x - 7 = x^2 -2x-2x+6x +4 - 7$

$(x - 2)\² + 6x - 7 = x^2 +2x-3$

Hence, the equivalent is:

$x^2 +2x-3$

6 0

3 years ago

What is -15x(-7) ( integer operation)

MA_775_DIABLO [31]

$- 15x( - 7) = 105x$
Not much more to say about this. Just multiply the integer by the coefficient.

6 0

3 years ago