Answer:
The number is 61.9
Step-by-step explanation:
Let
x ----> the original number
Remember that
we know that
The original number multiplied by the fraction 21/100 must be equal to the number 13
so
The linear equation that model this situation is
solve for x
Multiply by 100 both sides
Divide by 21 both sides
Pythagorean Theorem is 
+ 
= 
, where:
a and b are the legs
c is the hypotenuse
Add the squares of both a and b, and then square root that result to get c.
<em>Hope this helps! :)</em>
I hope this helps you
2x^2-x-15=0
2x +5
x -3
(2x+5)(x-3)=0
2x+5=0 x= -5/2
x-3=0 x=3
In Line 2, Madeline subtracted one from -7, she was supposed to add 1. UR WELCOME!!!
Answer: $28
to find 10% you need to divide by 10
10% = 3.5
20% = 7
35-7 = 28
