Answer:
6x + 10
Step-by-step explanation:
Do you have any answer choices?
Answer:
is it times or division??
if it times it would be 927.42
if divison it would be 0.0032645403377110694
Simple....
we have:
![\frac{-m}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-m%7D%7B20%7D%20)
+4=7
We must first isolate what we want to find...or m......
So...we must..
![\frac{-m}{20} +4=7](https://tex.z-dn.net/?f=%20%5Cfrac%7B-m%7D%7B20%7D%20%2B4%3D7)
-4 -4
Leaving you with...
![\frac{-m}{20} =3](https://tex.z-dn.net/?f=%20%5Cfrac%7B-m%7D%7B20%7D%20%3D3)
Thus, your answer isolate the variable. (Subtract 4 from both sides.)
Answer:
Roots are [4, -14}.
Step-by-step explanation:
1/2 (x+5)^2 + 2 = 42.5
Work out the square of the parentheses:
1/2 ( x^2 + 10x + 25) + 2 = 42.5
Multiply the parentheses by 1/2:
1/2 x^2 + 5x + 12.5 + 2 = 42.5
Subtract 42.5 from both sides of the equation:
1 /2x^2 + 5x +14.5 - 42.5 = 0
Simplify:
1/2 x^2 + 5x - 28 = 0
Multiply through by 2 to get rid of the 1/2:
x^2 + 10x - 56 = 0
Factor:-
(x + 14)(x - 4) = 0
Either x + 14 = 0 giving x = -14.
or x - 4 = 0 giving x = 4.