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muminat
3 years ago
9

Find the sum and choose the correct answer.

Mathematics
2 answers:
Alborosie3 years ago
5 0
B, n to the 3rd power + 4n to the 2nd power +8n -16
Alborosie3 years ago
5 0

Answer:

Option B (n³ + 4n² + 8n - 16)

Step-by-step explanation:

In this question we have to add two expressions given

( 2n³ + 4n² - 7 ) and ( -n³ + 8n - 9 )

( 2n³ + 4n² - 7 ) + ( -n³ + 8n - 9 )

Now we group the similar terms

( 2n³ - n³ ) + 4n² - ( 7 + 9 ) 8n

= n³ + 4n² - 16 + 8n

= n³ + 4n² + 8n - 16

Option B (n³ + 4n² + 8n - 16) is the correct answer.

You might be interested in
An archeologist discovered two artifacts buried beneath the ground. She found the first artifact at an elevation of -8:2/7 meter
8090 [49]

Answer:

Option D is the correct choice.

Step-by-step explanation:

We are provided angle of elevations of two artifacts buried beneath the ground and we are asked to find distance between these two elevations.

We will find distance between these elevations by taking the difference of two.

35:\frac{4}{7}--8:\frac{2}{7}

35:\frac{4}{7}+8:\frac{2}{7}=43:\frac{6}{7}

Since we know that distance is always positive so option A is incorrect.

Therefore, option D is the correct choice and distance between these two elevations is 43:\frac{6}{7}.

5 0
3 years ago
Read 2 more answers
X + (2x + 5) = 3(x – 4)+7
eduard

Answer:

Not true

Step-by-step explanation:

x + (2x + 5) = 3(x – 4)+7

Opening bracket on left and side and distributing 3 over (x-4) on right hand side

x+2x+5=3x-3 x 4 + 7

adding like terms

3x+5=3x-12+7

3x+5=3x-5

Hence

5 = -5

Which is not possible , Hence the equation given to us is false.

5 0
3 years ago
Billy is going to share 2 1/2 pizzas with
svet-max [94.6K]

Answer:

5/6

Step-by-step explanation:

2 1/2 -> 5/2

5/2 divided by 3, which is 0.83333333333

0.83333333333 as a simplied fraction is 5/6

4 0
2 years ago
118 {121÷(11×11)-(-4)-(3-7)}​
Rama09 [41]

<u>Q</u><u>uest</u><u>ion</u><u>:</u>

To Simplify:

118 {121÷(11×11)-(-4)-(3-7)}

<u>Solu</u><u>tion</u>:

↠118 {121÷121+4-(-4)}

↠118 {1+4+4}

↠118 {5+4}

↠118{9}

↠118×9

↠1062

▬▬▬▬▬▬▬▬▬▬▬▬

The upper Solution is done by applying BODMAS

<u>Abou</u><u>t</u><u> </u><u>BODMAS</u><u>:</u>

B→ Bracket

O→ Of

D→ Division

M→ Multiplication

A→ Addition

S→ Subtraction

5 0
2 years ago
Read 2 more answers
How is Solving for speed similar to solving for time? They both require that two numbers be added. They both require that two nu
sweet [91]

Answer:

They both involve writing a rate.

Step-by-step explanation:

EDGENUITY ANSWER

7 0
3 years ago
Read 2 more answers
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