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1 year ago

a certain test is worth 135 points. how many points (rounded to the nearest point) are needed to obtain a score of 85%?

1 answer:

7 0

To obtain a score of 85% on a test worth 135 points, one needs to get 115 points. By using proportions, we get the required value.

<h3>How to write proportions?</h3>

A proportion is defined as an equality between two ratios.

Consider two ratios a:b and c:d. Then, the proportion we can write,

a: b = c : d

Then, the simplification we have for this proportion is

a/b = c/d or ad = bc

<h3>Calculation:</h3>

It is given that, a certain test is worth 135 points.

One to get 85% on this test, he/she needs to get X number of points.

So, we can write the proportions as

X : 135 = 85 : 100

⇒ X/135 = 85/100

⇒ X = 85/100 × 135

∴ X = 114.75 ≅ 115 points

Learn more about proportions at the following link:

brainly.com/question/140018

#SPJ4

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riadik2000 [5.3K]

According to the calculations made, 410 gumballs will be needed to fill the box.

Since you are trying to figure out how many gumballs you need to fill a 7.3 x 5.0 x 9.4 rectangular box for Halloween, and each gumball has a radius of 1/2 in, if the packing density for spheres is 5/8 of the volume will be filled with gumballs while the rest will be air how many gumballs will be needed, to determine this amount the following calculation must be performed:

(Volume of box x 5/8) / volume of gumballs = Amount of gumballs
Volume of a sphere = 4/3 x 3.14 x (radius x radius x radius)
Volume of a gumball = 4/3 x 3.14 x (0.5 x 0.5 x 0.5) = 0.5235 inches
((7.3 x 5 x 9.4) x 5/8) / 0.523 = X
(343.1 x 5/8) / 0.523 = X
214.4375 / 0.523 = X
410 = X

Therefore, 410 gumballs will be needed to fill the box.

Learn more in brainly.com/question/1578538

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3 years ago

How do you simplify 24/80 as a fraction?

stira [4]

You divide both 24 and 80 by their GCF, which is 8. As a result, the fraction is simplified to 3/10.

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3 years ago

3x – 1 > 4x + 7<br> What’s the answer

aliya0001 [1]

Answer:

$x$

Step-by-step explanation:

So we have the inequality:

$3x-1>4x+7$

Add 1 to both sides. The left side cancels:

$3x>4x+8$

Subtract 4x from both sides. The right side cancels:

$-x>8$

Divide both sides by -1. Since we're dividing by a negative, we flip the sign:

$x$

And we're done!

Our solution is all numbers less than -8.

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3 years ago

Read 2 more answers

The graph below shows the solution set of which inequality

Alborosie

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3 years ago

saul makes green paint by mixing blue paint. For every 4 gallons of green paint he uses 3 gallons of blue paint .Drag the correc

Aleksandr [31]

Green paint is made by mixing yellow and blue paint. Given that, every 4 gallons of green paint contains 3 gallons of blue paint, how many gallons of yellow paint is in 4 gallons of green paint? Green-blue=yellow
4-3=1 Therefore 1 gallon of yellow paint is in 4 gallons of paint.
The ratio of blue to yellow is 3:1
If there are 16 gallons of green paint, how many gallons blue and yellow are in it? blue= 3 in 4 green
If 16=4
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If16=4
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3 years ago