2 years ago

Mei does 6 problems in 18 minutes. How many can she complete in 12 minutes

1 answer:

5 0

Do cross multiplication

6 = x
18 12

Now cross multiply

(6)(12) = (18)(x)

72 = 18x

Divide both sides by 18

72 = 18x
18 18

4 = x

So tMei can complete 4 problems in 12 minutes.

You might be interested in

Which bigger 0.80 or 0.08

nekit [7.7K]

0.80 because when you line up the decimals 0.80 is bigger

0.80
0.08

4 0

2 years ago

Read 2 more answers

What two numbers multiply to 40 and add to -6

Darya [45]

Answer: Nothing multiplies to 40 and adds to -6, it is impossible

6 0

2 years ago

I need help this is due tomorrow and I have to write an essay so please help!!!

HACTEHA [7]

2.) 6k - 9
*can't see #3*
4.) -9p + 17
5.) -15b^2 - 1b + 6c
6.) -4j

4 0

2 years ago

You have already traveled 25 miles. If you continue driving at the same speed, x miles per hour, for 5 more hours, you will trav

Fiesta28 [93]

Answer:1

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

1.find the sum. (3^3+5x^2+3x-7)+(8x-6x^2+6) 2. Find the Difference: (8x-4x^2+3\)-(x^3+7x^2+3x-8)

vlada-n [284]

$(3^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=27\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=-x^2+11x+26$

or if you mean (3x^3+5x^2+3x-7)+(8x-6x^2+6):

$(3x^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=3x^3\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=3x^3-x^2+11x-1$

$(8x-4x^2+3)-(x^3+7x^2+3x-8)=\\\\=\underline{8x}\ \underline{\underline{-\ 4x^2}}+3-x^3\ \underline{\underline{-\,7x^2}}\ \underline{-\,3x}+8=\\\\=-x^3-11x^2+5x+10$

3 0

2 years ago