The answer is a happy to help
15. -(-7y + 12) = 7y - 12
16. 1/a = 16/18
cross multiply
16a = 18
a = 18/16 = 9/8
17. 8x - 12 = 4x + 24
8x - 4x = 24 + 12
4x = 36
x = 36/4
x = 9
18. -6b > 42 4b > -4
b < 42/-6 b > -4/4
b < - 7 b > -1
so b < -7 and b > -1
19. 6 more then the product of 8 and n
6 + 8n
20. 45 = 3b + 69
45 - 69 = 3b
-24 = 3b
-24/3 = b
-8 = b
Answer:
A
Step-by-step explanation:
Hopefully this helps
Answer:
15
Step-by-step explanation:
Take x as how many pounds you need for the 6000 square feet
7 pounds x pounds
--------------- -----------------------
2800 square feet 6000 square feet
7*6000=42000
42000/2800=15
or you could find how many pounds you would need for 1 square feet.
7 pounds .0025 ponds
---------------- -----------------------
2800 square feet 1 square feet
and then you could just multiply .0025 and 6000
so = 15
Answer:
(f + g)(-2) = 2
Step-by-step explanation:
Step 1: Define
f(x) = 5 - x
g(x) = 2x - 1
Step 2: Find (f + g)(x)
(f + g)(x) = 5 - x + 2x - 1
(f + g)(x) = x + 4
Step 3: Find (f + g)(-2)
(f + g)(-2) = -2 + 4
(f + g)(-2) = 2