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Vedmedyk [2.9K]
3 years ago
5

50 points please help me with this. Dont spam random things. If your smart answer this please

Mathematics
2 answers:
geniusboy [140]3 years ago
8 0

Answer: It's B.

Step-by-step explanation: this is 1st grade math. good luck!

djverab [1.8K]3 years ago
3 0

Answer:

top one

Step-by-step explanation:

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By hypothesis, Deon is riding at a speed of 22.4 kilometers per hour. So each hour, he completes 22.4 km.

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So in 7 hours, he rides 156.8 kilometers.

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4 years ago
What is Gama rays? ‎ ‎​
Arte-miy333 [17]

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Select the correct answer from each drop-down menu. Right triangle ABC is represented with the right angle at vertex B. Base BC
Svetradugi [14.3K]

By using trigonometric relations, we will see that:

AC = 15.6 in

AB = 8.4 in.

<h3>How to get the measures of the other two sides of the right triangle?</h3>

Here we have the right triangle where:

B = 90°

C = 40°

BC = 10 in.

Notice that is the adjacent cathetus to the angle C, then we can use the two relations:

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  • hypotenuse = AC
  • opposite cathetus = AB.

Then we will have:

sin(40°) = 10in/AC.

AC = 10in/sin(40°) = 15.6 in

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So we can conclude that for the given right triangle we have:

AC = 15.6 in

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If you want to learn more about right triangles:

brainly.com/question/2217700

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Answer:

D. The rate of change must be 20 pounds per minute.

Step-by-step explanation:

At time 0, the amount of sand is 200 lb. Time zero is when it starts, so it is also called the initial time. The initial value is 200 lb, so choices A and B are wrong.

Now look at the difference from time 0 minutes to time 1 minute. The amount of sand went from 200 lb to 220 lb. The amount of sand placed in 1 minute is 20 lb, so the rate of change is 20 lb per minute. That makes choice C wrong and choice D correct.

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