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3 years ago

Find the area. Simplify your answer.

Mathematics

2 answers:

irinina [24]3 years ago

8 0

Answer:

2x(x + 3)

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saw5 [17]3 years ago

6 0

Answer: 2x²+6x

Step-by-step explanation:

A = bh

A = 2x(x+3)

A = 2x²+6x

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Part A: Solve −np − 70 < 40 for n. Show your work. (4 points) Part B: Solve 4w − 7k = 28 for k. Show your work. (6 points

likoan [24]

For part A, lets write the problem

$-np - 70\ \textless \ 40$

add $70$ to both sides

$-np - 70 + 70 \ \textless \ 40 + 70

-np \ \textless \ 110$

we are going to reverse the inequality, to do this we are going to multiply both sides by $-1$

$(-np ) ( -1 ) \ \textgreater \ 110 ( -1 )$

$pn \ \textgreater \ -110$

divide both sides by $p$

$\frac{pn}{p} \ \textgreater \ \frac{-110}{p}$

our answer would be

$n \ \textgreater \ \frac{-110}{p}$

lets go with part b, lets write the problem

$4w - 7k = 28$

subtract $4w$ from both sides

$4w - 7k - 4w = 28 - 4w$

$-7k = 28 - 4w$

divide both sides by $-7$

$\frac{-7k}{-7} = \frac{28}{-7} - \frac{4w}{-7}$

I few simplified it, we would be left with,

$k = -\frac{28 - 4w }{7}$

I hope this helped!!

- Kiana

7 0

4 years ago

Which equation has infinitely many solutions?

RideAnS [48]

Answer:

it might be c or a i go with c

Step-by-step explanation:

not for sure just a best guess

6 0

3 years ago

if I'm going to the lake that is 60 miles away and I'm driving 40 miles per hour how long would it take for me to get there

julsineya [31]

About 1.5 hours since you would do distance divided by the rate to get the time.

5 0

3 years ago

WILL MARK BRANLIESTIn a multiplication problem, if the first factor has 5 digits after the decimal and the second factor has 4 d

victus00 [196]

You can just pick any 5 digit decimal and multiply it with any 4 digit decimal to check.

You will see that it has 9 digits after the decimal.

8 0

3 years ago

Read 2 more answers

George and Paul use a metal alloy that is 18.1% copper to make jewelry. How many ounces of an alloy that is 14% copper must be m

ella [17]

Answer:

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

Step-by-step explanation:

Each ounce of the 14% copper contains 0.14 ounce of pure copper.

Each ounce of the 23% copper contains 0.23 ounce of pure copper.

Each ounce of the 18.1% copper contains 0.181 ounce of pure copper.

Use x ounces of the 14% and y ounces of the 23% to make 90 ounces of 18.1% alloy.

x+y = 90

y = 90-x

0.14x + 0.23y = 0.181·90

0.14x + 0.23(90-x) = 16.29

0.14x + 20.7 - 0.23x = 16.29

-0.09x + 20.7 = 16.29

4.41 = 0.09x

x = 49

y = 90-x = 41

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

7 0

3 years ago