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2 years ago

M is directly proportional to r³ when r=4, m=160.work out the value of r when m=20

Mathematics

1 answer:

11Alexandr11 [23.1K]2 years ago

7 0

Die haben sich auch schon in den nächsten Jahren und in den letzten Wochen nicht so viel 5=5

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Which polynomial is factored completely?

Katyanochek1 [597]

Answer:

pretty sure its A?

Step-by-step explanation:

EDGE 2020

4 0

3 years ago

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Keenan currently does a total of 888 pushups each day. He plans to increase the number of pushups he does each day by 222 pushup

marishachu [46]

Answer:

8 + 2x = 30

Step-by-step explanation:

Given,

The initial number of push-ups he does in each day = 8,

And, the number of push-ups, he increases per day = 2,

Let x be the number of days after he will reach his target of 30 push-ups,

Since, the number of push-ups she will increase in x days = 2x,

Thus, the number of push-ups she will do after x days = 8 + 2x,

⇒ 8 + 2x = 30, which is the required equation.

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3 years ago

What is the value of the expression 53.5-5? please explain

tatuchka [14]

48.5 is the answer.
Reason- an expression is an equation without an equal sign and this expression is saying 53.5 - 5.

4 0

3 years ago

Read 2 more answers

I need help asap and ill give brainliest

Finger [1]

Answer:

6. 2 bags

9. $54

Step-by-step explanation:

This should be right because you have to divide to find what is the rate.

7 0

3 years ago

Suzanne has a rectangular garden which is 18 feet long and 11 feet wide. She has 168 square foot of paving stones, and she wants

VikaD [51]

Answer:

width = 2.5 feet

Step-by-step explanation:

Suzanne has a rectangular garden which is 18 feet long and 11 feet wide.

Area of the garden = length times width = 18 times 11= 198 square foot

Let 'w' be the width of the border

Length of the garden with border = 18+2w

Width of the garden with border = 11+2w

Area of the garden with border = $(18+2w)(11+2w)=4w^2+58w+198$

Area of the border = $4w^2+58w+198-198=4w^2+58w$

She has 168 square foot of paving stones,

$4w^2+58w=168$

Solve for w

apply quadratic formula

a= 4, b= 58 and c=-168

$\quad x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$w=\frac{-58+-\sqrt{58^2-4\cdot \:4\left(-168\right)}}{2\cdot \:4}$

$w=\frac{-58+-\sqrt{6052}}{8}$

we get two values for w

$w=\frac{-58+\sqrt{6052}}{8}=2.47$

$w=\frac{-58-\sqrt{6052}}{8}=-16.97$

5 0

3 years ago