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Ludmilka [50]
2 years ago
5

-7mn (4m³n² + m²) Multiply

Mathematics
1 answer:
Viktor [21]2 years ago
8 0

- 7mn(4 {m}^{3}  {n}^{2}  +  {m}^{2} ) \\  - 28 {m}^{4}  {n}^{3}   - 7 {m}^{3} n

PLEASE GIVE BRAINLIEST

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Find the percentage error if you: Estimate your credit card balance to be $2000 when it is $2590. a. 22.8% b. 20.5% c. 30.8% d.
OverLord2011 [107]

Answer:

a) 22.8%

Step-by-step explanation:

(2590-2000) ÷ 2590 =

590 ÷ 2590 =

.2277 = 22.8%

4 0
3 years ago
Jerry and Carlos each have $1,000 and are trying to increase their savings. Jerry will keep his money at home and add $50 per mo
8_murik_8 [283]

Answer:

Jerry has a better saving plan for increasing his savings than Carlos

Step-by-step explanation:

Jerry's initial principal = $1000

Carlos initial principal = $1000

Jerry add $50 monthly this means that in 6 months he has

$50 x 6 = $300 as interest

This means that at the end of 6 months, Jerry would have $1,300 dollars at home

For Carlos the interest rate is 4% per year compounded monthly

If we calculate his interest per month we have:

Interest = 1000 x 4/(100 x 12) = $3.33

2nd month = 1003.33 x 4/(100 x 12) = $3.34

3rd month = 1006.68 x 4/(100 x 12) = $3.36

4th month = 1010.04 x 4/(100 x 12) = $3.37

5th month = 1013.41 x 4/(100 x 12) = $3.38

6th month = 1016.79 x 4/(100 x 12) = $3.40

At the end of 6 month, Carlos would have $1020.18 in the bank

Hence, Jerry has a better saving plan for increasing his savings than Carlos

8 0
3 years ago
C) What is the area of the shape in Step n?
Alekssandra [29.7K]

Answer:

i think 6 or 12 let me know which is correct

Step-by-step explanation:

3 0
3 years ago
Suppose the sale tax rate is 6%. How much sales tax would be charged for an item
s2008m [1.1K]

Answer:

B. $3.60

Step-by-step explanation:

Tax = 6%

Price = $60

Tax amount = 60*0.06 = $3.6

Correct answer: B. $3.60

8 0
4 years ago
Sarafina is making monthly payments into an annuity. She wants to have ​$900 in the fund to buy a new convection range in six ​m
Oksi-84 [34.3K]
\bf \qquad \qquad \textit{Future Value of an ordinary annuity}
\\\\
A=pymnt\left[ \cfrac{\left( 1+\frac{r}{n} \right)^{nt}-1}{\frac{r}{n}} \right]


\bf \begin{cases}
A=
\begin{array}{llll}
\textit{accumulated amount}\\
\end{array}\to &
\begin{array}{llll}
900
\end{array}\\
pymnt=\textit{periodic payments}\\
r=rate\to 8.4\%\to \frac{8.4}{100}\to &0.084\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{monthly payments, thus}
\end{array}\to &12\\

t=years\to \frac{6}{12}\to &\frac{1}{2}
\end{cases}
\\\\\\
900=pymnt\left[ \cfrac{\left( 1+\frac{0.084}{12} \right)^{12\cdot \frac{1}{2}}-1}{\frac{0.084}{12}} \right]


solve for "pymnt"
5 0
3 years ago
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