She completed 60 math problems. That was only 15% of what she had to do. How many math problems did she have to do

Mathematics

2 answers:

pav-90 [236]3 years ago

4 0

Answer:

400

Step-by-step explanation:

use proportions

(60/x) * (15/100)

cross multiply

6000=15x

divide both sides by 15

400=x

almond37 [142]3 years ago

3 0

First, turn the percentage into a decimal.

15% = 0.15

Second, divide.

60 / 0.15 = 400

Thus, she has to 400 questions total.

Best of Luck!

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Read 2 more answers

2 If A= 4 3 find A1 using elementary row operations.

MA_775_DIABLO [31]

Answer: $A^{-1}=\left[\begin{array}{cc}\frac{3}{2}&-\frac{1}{2}\\-2&1\end{array}\right]$

Step-by-step explanation:

$\left[\begin{array}{cc}2&1\\4&3\end{array}\right]=\left[\begin{array}{cc}1&0\\0&1\end{array}\right]$

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