3 years ago

When a number is decreased by 10% of itself the result is 171. What is the number?

1 answer:

4 0

$100\%-10\%=90\%\\\\ \begin{array}{ccc}90\%&-&171\\\\100\%&-&x\end{array}\\\\cross\ multiply\\\\90x=171\times100\\\\90x=17100\ \ \ |divide\ both\ sides\ by\ 90\\\\\boxed{x=190}\leftarrow solution$

You might be interested in

What is 2+2 in math and the answer is 4

Marianna [84]

Answer:

Step-by-step explanation:

7 0

2 years ago

Mr Cole has 30 students in his class. He has twice as many girls than boys. What is the ratio of girla to boys?

Elis [28]

Answer:

12:1/2(3)

Step-by-step explanation: no problem homie

8 0

2 years ago

A tree in Kevin's backyard is 5/8 meters tall. It has been growing for 1 2/5 years. What is the unit rate in meters per year? No

irga5000 [103]

Answer:

o.4464287142 or 0.4

Step-by-step explanation:

The tree is 5/8 meters tall and that's in 1 2/5 years so you would divide them and you get .4464287142

6 0

2 years ago

Read 2 more answers

Hurry <br> due today <br> please <br> thanks

drek231 [11]

Answer:

392.7

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

21 = − 6 x − 3 x + 4 + 4 x

horsena [70]

Answer:

x=-17/5

Step-by-step explanation:

1. Simplify -6x-3x+4+4x−6x−3x+4+4x to -5x+4−5x+4.

21=−5x+4

2. Subtract 44 from both sides.

21−4=−5x

3. Simplify 21-4 to 17.

17=-5x

4. Divided both sides by -5.

-17/5=x

5. Switch sides.

x=-17/5

Hope this helps.

4 0

3 years ago