So first you have to find the perfect square that matches up with x^2 + 6x
so half of 6, and square it. your perfect square is 9
x^2 + 6x + 9 = 7 + 9
then, condense the left side of the equation into a squared binomial:
(x + 3)^2 = 16
take the square root of both sides:
x + 3 = ± √16
therefore:
x + 3 = ± 4
x = - 3 ± 4
so your solution set is:
x = 1, -7
Answer:
y= -intercept = 10
Step-by-step explanation:
Answer:
Option A is correct.
The first step in solving the inequality is:
to distribute -4 to get 
Step-by-step explanation:
The distributive property says that:
Given the inequality:
Apply the distributive property we have;
Simplify:
Therefore, the first step in solving the inequality is:
to distribute -4 to get
Answer:
60 maths books
Step-by-step explanation:
<u>Let the following be:</u>
- Maths books = m
- Science books = s
- History books = h
<u>And we have ratios and sum:</u>
- m/s = 3/2
- s/h = 1/3
- m+s+h = 220
<u>From the ratios we get:</u>
<u>Considering the above in the sum of books:</u>
- m+s+h = 220
- 3s/2 + s + 3s = 220
- 3s + 2s + 6s = 2*220
- 11s = 440
- s = 440/11
- s = 40
<u>Number of maths books:</u>
Answer:
4 i think
Step-by-step explanation:
If you fold this figure some times it should get it evenly
