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antoniya [11.8K]
3 years ago
15

3 2 3 6n + 3n - 4n

Mathematics
2 answers:
Lana71 [14]3 years ago
6 0

Answer:5n^2

Step-by-step explanation:

GarryVolchara [31]3 years ago
5 0
It is 2n^3 + 3n^2. You combine like terms.
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Christine is riding her bicycle. She rides for 11.2 kilometers at a speed of 7 kilometers per hour. For how many hours does she
xxMikexx [17]

Answer:

1.6\ hours

Step-by-step explanation:

we know that

She rides for 11.2 kilometers at a speed of 7 kilometers per hour

Using proportion

Find how many hours does she ride

\frac{7}{1}\frac{km}{h} =\frac{11.2}{x}\frac{km}{h}\\ \\x=11.2/7\\ \\x=1.6\ hours

3 0
3 years ago
Find f(4).<br> f(x) = x2 + 2x - 3<br> A)<br> 5<br> B)<br> 11<br> 13<br> D)<br> 21<br> Elimina
grandymaker [24]

Answer:D

Step-by-step explanation:

you plug 4 in for x

f(4)=4^2+2(4)-3

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3 0
2 years ago
Kevin can travel 22 1/2 miles in 1/3 hour. What is his average speed in miles per hour? A.65 mph B.65.7 mph C.68 mph D.70 mph
mojhsa [17]

To find the answer, multiply 22 1/2 by 3.

22 1/2 x 3 = 67 1/2

This can round up to 68

The answer is C. 68 mph

If you have any further questions feel free to ask.

Hope this helps.

7 0
3 years ago
If two angles of a triangle have measures of 42° and 20°, what is the measure of the
iris [78.8K]

Answer:

118°

Step-by-step explanation:

the angle measures of a triangle will always add up to 180

so..

42+20=62

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4 0
3 years ago
Read 2 more answers
2x + 8 = 2(x + 4) help pls
Fynjy0 [20]
2x +8=2x+8
2x-2x=8-8
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So the answer is 0
7 0
3 years ago
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