Question

QUESTION 5.... Out of 10
2x+5y=15
5x+10y=35
A. (10, -1)
B. (5, 1)
C. (5, -1)
D. (10, 1)

Answer 1

Please do not give direct answers - if there are 10 questions then guidance should help the OP to solve the rest

Answer 2

lets use the good old elimination rule. again.
multiply first equation by -2
-4x -10y = -30
5x + 10y = 35
sum them up and get
x = 5
2 * 5 + 5y = 15
10 + 5y = 15
5y = 5
y = 1
Check:
25 + 10 = 35
35 = 35
Variant B(5 1)

Answer 3

= direct answer

Answer 4

not at all. at first i gave full explanation. wxplaining the elimination method already for around 4 questions.

Answer 5

So why not let OP use your help and work through the process for herself for the next 5?

Answer 6

All she will take from your answer is
"B"

Answer 7

At first she will read the explanation. there are things that you alwasy fail at? i have such things like probability theory and discrete math and i fail them all the time. People here help me at them. however if you want you can throw rock at me.