Answer:
- 4x + 36
Step-by-step explanation:
(
- 6)² = ( - 6)( - 6)
Each term in the second factor is multiplied by each term in the firs t factor, that is
( - 6) - 6( - 6)
Distribute both parenthesis
= - 2x - 2x + 36 ← collect like terms
= - 4x + 36
-3
-3 2/8 is the same as -3 1/4
-3 1/4 + 1/4 = -3
Ammoni - NH3
nitrification - conversion of ammonia to nitrates
Eutrophication - nutrient overload in the environment
Nitrogen gas - nitrogen fixers
Lightning and bacteria - unusable by most organisms
I hope this helps you, It was the best I could do!
J = jeans
T = t-shirts
You: 5j + 10t = 140
Friend: 3j + 5t = 79
To use elimination in this problem, multiply the second equation by -2 so that 10t and 5t can cancel out:
5j + 10t = 140
-6j - 10t = -158
We are left with -j = -18 or j = 18
Substitute 18 into any equation. I'll use the first equation:
5(18) + 10t = 140
90 + 10t = 140
10t = 50
t = 5
Answer:
Susan has 25 fish.
Step-by-step explanation:
25+18=43
18+7=25
