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Neporo4naja [7]
3 years ago
13

How would a 75% achievement grade on a test affect a person with a 90 average

Mathematics
1 answer:
Sphinxa [80]3 years ago
8 0

Well, let's see how it'll effect your grade...

75% ÷ 90% = 0.83

0.83 x 100 = 83%

It would effect your grade by 7 percent, lowering it to 83%

I hope this helps!

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Can someone help me and show the work pls.
Ivan

(1 & 2/3) ft = (1 ft) + (2/3 ft)

(1 & 2/3) ft = 12 inches + 12*(2/3) inches

(1 & 2/3) ft = 12 inches + 8 inches

(1 & 2/3) ft = 20 inches

If the tree grows 5 inches per year, then it will take 4 years to get to 20 inches since 5*4 = 20. You can also divide to get 20/5 = 4.

So it takes 4 years for the tree to grow 1&2/3 feet tall.

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3 years ago
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What is compression
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Answer:

the action of compressing or being compressed.

the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.

Step-by-step explanation:

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3 years ago
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3 years ago
If<br> DX/DT= 2cm/s <br> x=-1 <br> y=x^2+1<br> DY/DT=??
kobusy [5.1K]

Answer:

\frac{dy}{dt} = - 4 cm/s

Step-by-step explanation:

Let us revise the chain rule

If \frac{dy}{dt} = a and \frac{dx}{dt} = b, then

\frac{dy}{dx} = \frac{dy}{dt} ÷  \frac{dx}{dt} = \frac{a}{b}

∵ y = x² + 1

- Use the differentiation to find \frac{dy}{dx}

∴ \frac{dy}{dx} = 2x

∵ x = -1

- Substitute x by -1 in  \frac{dy}{dx}

∴  \frac{dy}{dx} = 2(-1)

∴  \frac{dy}{dx} = -2

∵  \frac{dy}{dt} =  \frac{dy}{dx} ×  \frac{dx}{dt}

∵ \frac{dx}{dt} = 2 cm/s

∴  \frac{dy}{dt} = (-2) × (2)

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8 0
3 years ago
The area of a rectangle is 53.3 in2. If the width is 6.5 in, what is the perimeter of the rectangle?
Nuetrik [128]
You can find the length from
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  (53.3 in²)/(6.5 in) = L = 8.2 in

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The perimeter of the rectangle is 29.4 inches.
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3 years ago
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