Help please.. DuE Today. No LiNkS!! Thanks! 8th Grade Mathh No.2

Mathematics

1 answer:

Tom [10]2 years ago

4 0

Answer:

$\text{(C).} ~~y=-2x+3$

Step-by-step explanation:

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A motorboat heads upstream a distance of 24 miles on a river whose current is running at 3 miles per hour. The trip up and back

Kryger [21]

To get speed you do Distance/Time.

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3 years ago

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What is the simplified form of the following expression? 6c^2 + 2.5d - d + 2c^2 - 3d

motikmotik

Answer:

The simplest form would be:

8c² - 1.5d

Explanation:

To simplify an expression, we need to gather the like terms.

Like terms are the ones having the same variable raised to the same power

In the given expression:

6c² + 2.5d - d + 2c² - 3d

We have terms having c² and terms having d.

Therefore, we would gather them as follows:

6c² + 2.5d - d + 2c² - 3d

(6+2)c² + (2.5-1-3)d

8c² - 1.5d ......................> This is the simplest form

Hope this helps :)

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4 years ago

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The glass container is filled to a height of 2.25 inches. What percent of the container is filled with sand?

Makovka662 [10]

The complete question in the attached figure

Part A) How much sand is currently in the container?
[sand currently in the container]=(5)*(4 1/2)*(2.25)-----> (5)*(4.5)*(2.25)
[sand currently in the container]=50.625 in³

the answer Part a) is 50.625 in³

Part B) How much more sand could the container hold before?
[sand could the container hold before]=[5*4.5*3]-[50.625]
[sand could the container hold before]=[67.5]-[50.625]------> 16.875 in³

the answer Part B) is 16.875 in³

Part C) What percent of the container is filled with sand?
the volume of container is [5*4.5*3]=67.5 in³
the volume filled with sand=50.625 in³
therefore
if 100%----------------> 67.5 in³
X---------------------> 50.625 in³
X=(50.625*100)/67.5=75 %

the answer Part C) is 75%