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2 years ago

A swimmer can swim at a rate of 8 meters per second. How far can he swim in 1.5 minutes?

2 answers:

mote1985 [20]2 years ago

4 0

Answer:

The answer is 720 meters.

Explanation:

There is 90 seconds in 1.5 minutes, so if the swimmer can swim 8 meters per second you have to multiply 8 meters by the 90 seconds. 8 x 90 = 720, so the swimmer can swim 720 meters in 1.5 minutes.

Ronch [10]2 years ago

3 0

It has to be 12. I mulitplied 8 x 1.5

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3 years ago

If m = 5 and n = -2, evaluate 3m - 4n and n2 - m and find the product of the two expressions.

ddd [48]

Hence the correct answer is C) -23

Further explanation:

We have to put the values of m and n into both expression first separately and then multiply the answers.

Given expressions are:

$Exp\ 1:3m-4n\\Exp\ 2: n^2-m$

The values are:

$m=5\\n=-2$

Putting the values in expression 1:

$3m-4n\\=3(5)-4(-2)\\=15+8\\=23$

Putting the values of m and n in second expression

$n^2-m\\=(-2)^2-5\\=4-5\\=-1$

Multiplying both expressions:

$(3m-4n)(n^2-m)=23* (-1)=-23$

Hence the correct answer is C) -23

Keywords: Polynomials, Putting values in expressions

Learn more about polynomials at:

#LearnwithBrainly

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3 years ago

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ElenaW [278]

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3 years ago

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Dmitry [639]

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Step-by-step explanation:

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3 years ago

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3 years ago