Question

The sides of a square are five to the power of two fifths inches long. What is the area of the square?

five to the power of four fifths square inches
five to the power of four twenty fifths square inches
twenty five to the power of four fifths square inches
twenty five to the power of four twenty fifths square inches

Answer 1

@DanJS @dan815 @ali2x2

Answer 2

A = s²
\[A = 5^\frac{ 2 }{ 5 }*5^\frac{ 2 }{ 5 }\]
When you multiply numbers with the same base, add the exponents

Answer 3

i got A?

Answer 4

yes

Answer 5

okay can u help me with one more

Answer 6

ok

Answer 7

Samantha puts an initial $500 into a savings account. The account has a 4% annual compound interest rate. What is the function that best represents Samantha's account and how much does she have in savings after 5 years? Round your answer to the nearest dollar.
Hint: Use the formula, f(x) = P(1 + r)x.

f(x) = 500(1.4)x, $2,689
f(x) = 500(0.04)x, $512
f(x) = 500(1.04)x, $608
f(x) = 500(1.04)x, $527

Answer 8

P is the initial amount, 500.
r is the interest rate in decimal, 0.04, so the foumula is
\[P=500(1+0.04)^x\]
\[P=500(1.04)^x\]

Plug in 5 for x to get the amount after 5 years

Answer 9

@ali2x2 was i right

Answer 10

heres a google search im kinda busy
http://openstudy.com/study#/updates/55a84f87e4b071e6530c0bfd

Answer 11

@peachpi i got A am i right