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garri49 [273]
3 years ago
13

Select the correct answer. Write (21 − 4i) − (16 + 7i) + 28i as a complex number in standard form. A. 5 + 39i B. 5 + 17i C. 5 −

39i D. 5 − 17i
Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

Answer:

<em>b. 5 + 17i</em>

Step-by-step explanation:

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a line with a slope of 3 passes through the point (2,5) write an equation for this line in point-slope form.​
Bingel [31]

Answer:

Point Slope: y - 5 = 3 (x-2)

Slope Intercept : y=3x-1

Step-by-step explanation:

1.) y - 5= 3(x-2)

2.) y - 5 = 3x-6

3.) y=3x-1

4 0
3 years ago
A a squirrel ran 9 miles in one hour. which expression can be used to determine its speed in miles per hour?
julsineya [31]

The unit rate is 9 miles per hour.

In order to find how much its unit rate will be you need to use this expression below.

<em>n = number of hours</em>

<em>m = number of miles </em>

m divided by n or <em>m/n</em>

In order to find how much does he travel in given hours see this below.

<em>n = number of hours</em>

<em>m = number of miles for 1 hour</em>

<em>nm or n * m</em>


5 0
3 years ago
In 2015, the population of the United States was about 320 million people. About 7 out of 10 Americans live in urban areas. How
Kay [80]
224million is the correct answer.
7/10 of 320,000,000 is 224,000,000
7 0
2 years ago
Select the correct answer from the drop-down menu.
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C (mb) 91/323.............
8 0
3 years ago
Find the value of $ 15,000 at the end of one year if it is invested in an account that has an interest rate of 4.95 % and is com
lora16 [44]
A)

\bf \qquad \textit{Compound Interest Earned Amount}&#10;\\\\&#10;A=P\left(1+\frac{r}{n}\right)^{nt}&#10;\quad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\\&#10;P=\textit{original amount deposited}\to &\$15000\\&#10;r=rate\to 4.95\%\to \frac{4.95}{100}\to &0.0495\\&#10;n=&#10;\begin{array}{llll}&#10;\textit{times it compounds per year}\\&#10;\textit{twelve months, thus}&#10;\end{array}\to &12\\&#10;t=years\to &1&#10;\end{cases}&#10;\\\\\\&#10;A=15000\left(1+\frac{0.0495}{12}\right)^{12\cdot 1}

b)

\bf \qquad \textit{Compound Interest Earned Amount}&#10;\\\\&#10;A=P\left(1+\frac{r}{n}\right)^{nt}&#10;\quad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\\&#10;P=\textit{original amount deposited}\to &\$15000\\&#10;r=rate\to 4.95\%\to \frac{4.95}{100}\to &0.0495\\&#10;n=&#10;\begin{array}{llll}&#10;\textit{times it compounds per year}\\&#10;\textit{365 days, thus}&#10;\end{array}\to &365\\&#10;t=years\to &1&#10;\end{cases}&#10;\\\\\\&#10;A=15000\left(1+\frac{0.0495}{365}\right)^{365\cdot 1}

c)

\bf \qquad \textit{Compound Interest Earned Amount}&#10;\\\\&#10;A=P\left(1+\frac{r}{n}\right)^{nt}&#10;\quad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\\&#10;P=\textit{original amount deposited}\to &\$15000\\&#10;r=rate\to 4.95\%\to \frac{4.95}{100}\to &0.0495\\&#10;n=&#10;\begin{array}{llll}&#10;\textit{times it compounds per year}\\&#10;\textit{four quarters, thus}&#10;\end{array}\to &4\\&#10;t=years\to &1&#10;\end{cases}&#10;\\\\\\&#10;A=15000\left(1+\frac{0.0495}{4}\right)^{4\cdot 1}
7 0
3 years ago
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