2 years ago

What is the product of the polynomials below?

2 answers:

8 0

Hi there! The answer is C.

$(5 {x}^{2} + 5x + 7)(8x + 6) = \\ work \: out \: parenthesis \\ \\ 40 {x}^{3} + 30 {x}^{2} + 40 {x}^{2} + 30x + 56x + 42 = \\ collect \: terms \\ \\ 40 {x}^{3} + 70 {x}^{2} + 86x + 42$

drek231 [11]2 years ago

6 0

The answer is C

40x3 + 70x2 + 86x + 42

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Lubov Fominskaja [6]

Answer:

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option D

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2 years ago

What is 2 2/3×3 1/4 as a fraction form

8090 [49]

Answer:

8 2/3

Step-by-step explanation:

2 2/3×3 1/4

Change to improper fractions.

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2 years ago

Read 2 more answers

A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She t

Kaylis [27]

Answer: 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

Step-by-step explanation:

Given :

Sample size(n) = 17

Sample mean = 20000

Sample standard deviation = 1,500

5% confidence

∴ $\frac{\alpha}{2}$ = 0.025

Degree of freedom ( $d_{f}$ ) = n-1 = 16

∵ Critical value at ( 0.025 , 16 ) = 2.12

∴ 95% confidence interval = mean ± $Z_{c}$ $\times$ $\frac{\sigma}{\sqrt{n} }$

Critical value at 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

3 0

3 years ago

What is the expression 6π -3(y+2)

romanna [79]

Y=4

Don’t judge if I’m wrong

Simplifies it would be 18.34-6y-6

7 0

3 years ago

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Sidana [21]

The money is a lot so it would be c

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3 years ago