Answer:

Step-by-step explanation:
we have

solve for x

Group terms that contain the same variable and move the constants to the other side



Answer:
height of tree = 7.68 m
Step-by-step explanation:
ΔABC and Δ
A
D
E are similar . In similar triangles, corresponding sides are always in the same ratio
What do you need help with?
Answer:
7x^2+2x-4
Step-by-step explanation:
a standard form is ax+by=c
5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4
Answer:
A) 21
Step-by-step explanation:
Mean:
(23 + 18 + 24 + 15 + 25)/5
105/5
21