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4 years ago

6

A student computed the average of her 7 test scores by adding the scores together and dividing this total by the number of tests

. The average was 87. On her next test, she scored a 79. What is her new test average?

1 answer:

mina [271]4 years ago

7 0

After the new test, she now has taken 8 tests.
Set it up just like when finding the average:
(87+79)/8
Solve for the new test average

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There are 6 cakes in a box. The box and cakes weigh 250 grams altogether. The box weighs 22 grams. Each cake weights the same. W

levacccp [35]

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4 years ago

Use the net to find the lateral area of the cylinder.

ioda

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C=pid
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4 years ago

Read 2 more answers

Find the measurement of the inscribed angle CDB indicated below

Wewaii [24]

Answer:

∠ CDB = 45°

Step-by-step explanation:

The measure of an inscribed angle is half the measure of its intercepted arc.

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4 years ago

A sprinkler sprays water in a circular area up to 30 feet. A radius reduction screw lets people reduce the radius by up to 25%.

tankabanditka [31]

Answer: $1590.63\ ft^2$

Step-by-step explanation:

Given

The sprinkler can water the area up to $30\ ft$ i.e. $30\ ft$ is the radius

If the screw leads to a reduction of 25% in radius, then the new radius is

$r'=(1-0.25)r\\r'=0.75r\\r'=22.5\ ft$

So, the area corresponding to this radius

$\Rightarrow \pi (22.5)^2\\\Rightarrow 1590.63\ ft^2$

Thus, the maximum area that can be covered is $1590.63\ ft^2$

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3 years ago

one side of the square is 10 units. which is greater, the number of square units for the area of the square or the number of uni

Goshia [24]

It is the area because the perimeter is 10+10+10+10=40 but the area is 10*10=100.

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4 years ago