Answer: 15
Step-by-step explanation: Perimeter is adding the width and the length together. For a rectangle, it has four sides, so it has two lengths and two widths. The width is 10, so you add 10 + 10 which is 20. The length of the rectangle would be 15 since 15 + 15 is 30, and then 30 + 20 = 50, the perimeter.
Answer is C x=1 because that’s the middle of it.
Answer:
12n-10=14, n=2
Step-by-step explanation:
( Twelve times of a number decreased by 10 is equal to 14 ) This sentence can be written mathematically to be: 12n-10=14
The answer: Add 10 to both sides: 12n-10=14 > 12n-10+10=14+10 > 12n=24
Divide both sides by 12: 12n=24 >
> n=2
<span>Mrs.
Hanover borrows 1400 dollars at a rate of 5.5% per year.
She paid it within 8 months only, find the interest rate that she paid.
First let’s calculate the 5.5% rate per year
=> 1400 x 0.055
=> So in 1 year, she will 77 dollars as interest.
Now, in 1 year there are 12 months., let’s divide 5.5 by 12
=> 5.5 / 12 = 0.46 per month
=> 0.46 x 8 months = 3.67% in 8 months.
Now, let’s get the interest rate
=> 1 400 x 0.037
=> 51.8
</span>