Question

Plzzzzzzz answer these questions at least 2,3,4.
1) add
$\frac{5}{ - 7} + \frac{ - 2}{ - 7}$
2)
express 144 in exponential form

3)
give the standard form of scientific notation of 83500

4)
find the mean proportional of 6 and 24

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Answer 1

Answer:

2)12 raise to power 2=144

Step-by-step explanation:

it is the exponential form of 144

Answer 2

Answer:

1. -3/7

2. 12^2

3. 8.35 × 10^-4

4. 1/4