Martha deposits $500 in an account that pays 6% simple interest, and $1000 in a second account which has a higher interest rate
but is more risky. What interest rate must she get on the second account in order to earn at least $130 in interest for the year?
1 answer:
$1000 x r%= 130
Since we can't move r% back two places to change it to a decimal, we can move the decimal by on the $1000.
Why? Is .47 x 53 the same as 47 x .53? (yes) - Do you see that is does not matter whether the decimal is moved back two places on one or the other?
So
$1000 can become 10 by moving it back two places.
10r = 130
<u>10</u>r = <u>130
</u>10 10 divide both sides by 10 and you get 13%
<u>
Check</u> 1000 x .13 = $130
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Answer:7.775
Step-by-step explanation:
So u do 130.05 ÷18 =7.225
Now u do 15 - 7.225 = 7.775
7.775 is the money she can still spend for them.
Also u could do 15 x 18 = 270
270 ÷ 2 = 135
That does not make sense sorry :(
5(x-5)^4(x+4)
you raise x-5 to the 4th power because 5 has a multiplicity of 4
Answer:
4
Step-by-step explanation:
8/3 ÷ 2/3
8/3 * 3/2
4
When you move down you subtract and when you move to the right you subtract when your moving up or to the left you add
