PLS HELP FAST FIRST ANSWER GETS BRAINLYEST

Mathematics

2 answers:

Shkiper50 [21]2 years ago

8 0

That every week Elena pays her brother $3

Please mark brainiest :)

Fofino [41]2 years ago

4 0

I did this before it’s 3$

You might be interested in

Which number completes the Pythagorean Triple of 9, 12, x?

Pavlova-9 [17]

The Pythagorean theorem is A^2 + B^2 = C^2. So you will do 9^2 + 12^2 = 225. The square root of 225 is 15, and so is the answer d. hope this helps

3 0

3 years ago

(72 - 6^2 ) ÷ ( 3 + 6 )

Vinil7 [7]

Answer:

Step-by-step explanation:

72-36=36

36÷9=4.........

8 0

4 years ago

Read 2 more answers

A cube has a surface area of 864 square inches.

slamgirl [31]

The answer is (D) or 1728 In³

6 0

4 years ago

Read 2 more answers

If an investment of $3000 grows to $4432.37 in eight years with interest compounded annually , what is the interest rate?

melamori03 [73]

$\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\to &\$4432.37\\
P=\textit{original amount deposited}\to &\$3000\\
r=rate\to r\%\to \frac{r}{100}\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{annually, thus once}
\end{array}\to &1\\
t=years\to &8
\end{cases}$

$\bf 4432.37=3000\left(1+\frac{r}{1}\right)^{1\cdot 8}\implies \cfrac{4432.37}{3000}=(1+r)^8
\\\\\\
\sqrt[8]{\cfrac{4432.37}{3000}}=1+r\implies \sqrt[8]{\cfrac{4432.37}{3000}}-1=r
\\\\\\
0.0500001086\approx r\qquad\qquad\cfrac{r\%}{100}\approx 0.0500001086
\\\\\\
r\%\approx 100\cdot 0.0500001086\implies r=\stackrel{\%}{5}$

6 0

4 years ago

Helpppppppppppppppppppp pretty please im very desperate

laila [671]

Answer:

the first one is no it's nonproportional

and the second one it yes its proportional

7 0

3 years ago

Read 2 more answers