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2 years ago

What is the product?

Mathematics

1 answer:

makkiz [27]2 years ago

4 0

Step-by-step explanation:

(4s + 2) × (5s² + 10s +3)

we know immediately the first and the last term of the result, because there is only one operation to build them :

20s³ and 6.

so, the first answer option is already eliminated.

let's multiply

4s×5s² + 4s×10s + 4×3s + 10s² + 20s + 6

20s³ + 40s² + 12s + 10s² + 20s + 6

20s³ + 50s² + 32s + 6

so, the last answer option is correct.

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2 years ago

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3 years ago

In 2015 the population of 895 quail increases at an annual rate of 3.5%. In writing an

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3 years ago

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Answer:

Step-by-step explanation

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3 years ago

A cyclist travels at distance of 400 meters in 120 seconds towards school, calculate his speed. (Show your work)

DochEvi [55]

we know that

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$Speed=\frac{distance}{time}$

in this problem we have

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substitute in the formula

$Speed=\frac{400}{120}$

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therefore

the answer Part a) is

the speed is equal to $3.5\frac{m}{sec}$

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we know that

Velocity is a vector quantity; both magnitude and direction are needed to define it

in this problem we have

the magnitude is equal to the speed

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therefore

the answer Part b) is

the velocity is $3.5\frac{m}{sec}\ North\ East\ (NE)$

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we know that

the acceleration is equal to the formula

$a=\frac{V2-V1}{t2-t1}$

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$V2=0 \\V1=3.5\frac{m}{sec}$

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substitute in the formula

$a=\frac{0-3.5}{15-0}$

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therefore

the answer Part c) is

the acceleration is $-\frac{7}{30}\frac{m}{sec^{2}}$

This is an example of negative acceleration

7 0

3 years ago

Read 2 more answers