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Mathematics

2 answers:

Alla [95]3 years ago

7 0

Notes will earn a B in his physics class if he earns between a 77 and a 95 percent on the final exam (inclusive). Those inputs will give him score of exactly 80 and 89 percent as a final grade.

Wittaler [7]3 years ago

6 0

Answer:

The answer is 80 and 89 because on the last sentence states that the average lie between these two numbers

Step-by-step explanation: plz mark brainliest if im right

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If two angles are supplementary and one of the angles measures 62 degrees, What is the measure of the other angle?

nordsb [41]

Answer:

118 degrees

Step-by-step explanation:

Supplementary = sum of the angles equal 180 degrees

180 - 62 = 118

118 degrees is your answer

Hope this helps!

3 0

3 years ago

At Northside Middle School, 30 students were surveyed about their favorite type of music. If 2/5 of students surveyed prefer pop

gregori [183]

Answer: 18 students do NOT prefer pop music.

Explanation: 2/5 of 30 students do PREFER pop music, that means the rest, which is 3/5, does NOT prefer pop music
3/5 of 30 is 18
30 divided by 5 x 3 = 18
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3 0

3 years ago

Sam's car traveled 120 miles on 9 gallons of gasoline. Which fraction expresses the ratio of miles to gallons?

gogolik [260]

Miles to gallons=120:9=40:3

6 0

3 years ago

The minute hand of a clock is 8 inches long. How far does the tip of the minute hand move in 30 minutes? How far does it move in

Brrunno [24]

Answer:

In 30 minutes:

The minute hand moves a distance of 25.13 inches

In 20 minutes:

The minute hand moves a distance of 16.76 inches

Step-by-step explanation:

When 60 minutes are completed, the minute hand of the relog makes a complete revolution. The distance s that the minute hand travels when making a complete revolution is:

$s = 2\pi r$ Where r is the radius of the circumference, and in this case, the radius of the minute hand.

So:

$s = 16 \pi$

s = 50.27 inches.

In 30 minutes (which is half of 60) the minute hand covers only half a revolution. Then the distance traveled in 30 minutes is $\frac{1}{2}(s) = 25.13$ inches

In 20 minutes (which is one third of 60) the minute hand only travels a third of a complete revolution. Then the distance traveled in 20 minutes is $\frac{1}{3}(s) = 16.76$ inches