Mathematician

Well, make a list of the factors of 6 like so:

-6

1 * -6 | (1 - 6 = -5)

-1 * 6 | (-1 + 6 = 5)

2 * -3 | (2 - 3 = -1)

-2 * 3 | (-2 +  3 = 1)

2 and -3 multiply to equal -6, and add up to equal -1.

You might not use pi in day-to-day life... but if you're doing anything with circles (ex: building things or trying to figure out how much fabric you need to cover a circular object), it's a useful quantity to know.

9 + 10 =

ooooooooo + oooooooooo =

Count the circles:

o o o o o o o o o + o  o  o  o  o  o  o  o  o  o

1 2 3  4 5 6  7 8 9   10 11 12 13 14 15 16 17 18 19

19.

I think you mean they wrote their 9 is upside down.

If she withdraws $14 from her bank account, then her account balance decreases by $14, so the change to the balance is -$14. Multiply -14 times 7 (which will be a negative product) to get the total change to the amount in her account in the first scenario.

Adding $14 is very similar, the only difference being her account balance increases by $14, so the change to the balance is $14. Multiply this by 7 to get the total change to the amount in her account in the second scenario.

Hopefully the difference between the withdrawal and deposit is clear from the earlier explanation.

Check your math.

You're close, but just a bit off.

Well, it really depends on how complex you want to get.

To isolate a in this equation, the eighth root of both sides can be taken:

8 = a^8

a ^ 8 = 8

\(\sqrt[8]{a^8} = \sqrt[8]{8}\)

8th power and 8th root cancel, giving us:

\(\sqrt[8]{a^8} = \sqrt[8]{8}\)

\(a = \sqrt[8]{8}\) ≈ 1.2968395546510097