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baherus [9]
3 years ago
6

Tell which variable you would choose to eliminate when solving the system by elimination. Then solve the system by elimination.

Equation 1: 2x+y=−5. Equation 2: −2x+y=8. You can eliminate [ ] by [ ]. The solution of the system is ( [ ], [ ] ).
Mathematics
1 answer:
Julli [10]3 years ago
3 0

Answer:

x = 3/2 and y = -8.

Step-by-step explanation:

Given equations are :

2x+y=−5 ....(1)

−2x+y=8 ....(2)

We need to solve the above equations.

Adding equation (1) and (2).

2x+y −2x+y=-5+8

2y = 3

x = 3/2

Put the value of x in equation (1).

2\times \dfrac{3}{2}+y=-5\\\\3+y=-5\\\\y=-5-3\\\\y=-8

So, the solution of the above equations are x = 3/2 and y = -8.

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Answer:

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Answer:

Step-by-step explanation:

Method 1: Taking the log of both sides...

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log 5^(2x + 1) = log 25 <-- use property: log (a^x) = x log a...

(2x + 1)log 5 = log 25 <-- distribute log 5 inside the brackets...

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(2x)log 5 / log 5 = log 5 / log 5 <--- this equals 1..

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3 0
3 years ago
What is 15 1/8 - 1 3/5
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Hope this helps:)

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