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Arlecino [84]
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?
Mathematics
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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5 0
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 0
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.

∠ CDB = 0.5 × BC = 0.5 × 90° = 45°

7 0
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

5 0
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.
7 0
4 years ago
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