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MAVERICK [17]
2 years ago
12

Substitution method x-7y=-9 -x+8y=10

Mathematics
1 answer:
max2010maxim [7]2 years ago
7 0

Answer:

x = -2, y=1

Step-by-step explanation:

x-7y=-9---------------------equation 1

-x+8y=10-------------------equation 2

From equation 1, make x the subject of formula

x=7y-9----------------------equation 3

substituting x=7y-9 in equation 2,

-(7y-9)+8y=10

Expanding bracket

-7y+9+8y=10

Collecting like terms

8y-7y=10-9

y=1

substituting y=1 in 3

x=7(1)-9

x=7-9

x=-2

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5*10^4=5*10000=50000

4 0
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How do I write an equation that would allow someone to find the value of R
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Answer:

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Step-by-step explanation:

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As for solving it,

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5 0
3 years ago
Help me solve this image please!!!
tresset_1 [31]

Based on the information, Christian would have $5525.5 of an annuity.

<h3>How to calculate the annuity?</h3>

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Learn more about annuity on:

brainly.com/question/5303391

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Answer:

A. ?

B. ?

C. ?

1. Different

2. Same

3. Not always

4. multiplying, same, different

5. Don't know

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Step-by-step explanation:

I kinda went off what I knew

Hey at least I tried

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