Question

NEED HELP WITH MATH :( Pleaseee..

Answer 1

Post a question and people will do their best.

Answer 2

Okay! :)

A student invested 90% of her savings in the stock market. If she invested $3150, what are her total savings?

Answer 3

when i need help with math, I go to a quiet place and sing lady gaga

Answer 4

$50.

Answer 5

Lol I don't really enjoy her music... Lol :/

Answer 6

I'm getting a feeling I am not going to get help on this website....

Answer 7

Let T be her total savings. Then 90% of T is $3150

That is: 0.9T = 3150

So now you need to solve for T

Answer 8

percents are a measure of divisions by 100

Amount/ 100 = 1%, and we want 90 of them

90 times Amount/100 is equal to 3150

9A/10 = 315

9A = 3150

A = 3150/9

Answer 9

@amistre: you've made a mistake

Answer 10

..help is a subjective term

Answer 11

i prolly did, but i blame me fingers

Answer 12

Thanks James :)

Answer 13

Sure thing.

Answer 14

How would it be 0.9 though?

Answer 15

I have a new question! You boys willing to help? :))

Answer 16

Because if you have 100% of T that would be T

If you have 50% of T that is half of T or T/2 or 0.5T

If you have x% of T, that is
\[\frac{x}{100} T\]

Answer 17

i see my error; i simplified and divided by 10 in the same thought ..... bummer

Answer 18

So in this case, 90% of T is

\[\frac{90}{100}T = \frac{9}{10}T = 0.9T\]

Answer 19

hmm .... im to old to be a "boy" any more so that rules me out

Answer 20

Post a new question over on the left of your screen and people will chime in.

Answer 21

two planes are 7700 miles apart, and their speeds differ by 300 mph. They travel toward each other and meet in 7 hours. Find the speed of the slower plane.

Answer 22

But before we leave this question, can you solve

0.9T = 3150 ?

Answer 23

Yeah I got 3500? :)

Answer 24

Right.