Answer:
She did no divide each addend correctly
Step-by-step explanation:
Given
12 + 32 ← factor out 4 from each addend
= 4(3 + 8)
As 4 × 3 = 12 and 4× 8 = 32
Valerie had 12 + 32 = 4(1 + 10) ← incorrect statement
Yes it is a rational number
First one is 2
(9x - 7 = 3x + 5
9x - 3x = 5 + 7
6x = 12
x = 12/6
x = 2)
Second one is 35°
( measure of Angle ABC = measure of Angle DBE
measure of Angle ABC = 35°
Therefore measure of Angle DBE = 35° (Since its equal))
Answer:
Step-by-step explanation:
This is called a 'System of equations'.
Say that you have these two expressions, and the unknown is "b".
5b = y
4b+2 = y
Now we can solve two ways; graph it or solve it.
Solving it, we can see that they both equal y, so:
5b=4b+2
move 4b to the left side by subtraction:
(5b-4b) =2
b = 2
let's see what y equals when b = 2
5 * 2 = y
10 = y
Graphing it we see they intersect, or solve at
(2,10) or b=2, y=10
Hope this helps!