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➷ 847) You need to cross multiply
Multiply both sides by (x - 7) and 3
This is what you should get:

Now we just need to get like terms on the same side.
Add 42 to both sides and subtract 2x from both also
Now you get this:

848) It's the same principle in this one too.
Multiply both sides by (x - 13) and 11
You should get:

Subtract 11x from both sides and add 156 also
Now you get:

849) Multiply both sides by x
You should get:

Add 4x to both sides and add 12 also:

Divide both sides by 5

850) Multiply both sides by x
You should get:

Subtract x from both sides:

Divide both sides by 3:

➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ Hannah ♡
Answer:
A: -2
Step-by-step explanation:
You want some factor k such that k(5x) +(10x) = 0. That is, 5k+10 = 0. The solution to this is k=-2, corresponding to selection A.
Answer:
About 39 hours
Step-by-step explanation:
You would do 200/5.15 and get 38.83....
If you round then you get 39.
Answer:
8 = x²
Step-by-step explanation:
Logarithmic form: logₓ(8) = 2
Exponential form: 8 = x²
Area of the trapezium = 1/2 (40 + 160) x 70
Area of the trapezium = 7000 ft²
One bag of fertilizer = 4000 ft²
Number of bags of fertilizer needed = 7000 ÷ 4000 = 1.75 bags.
Since only full bags of fertilizer can be bought, 2 bags of fertilizer are needed.
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Answer: 2 bags of fertilizer
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