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Crank
3 years ago
5

Two ropes extend from the top of a flagpole to the ground 18 feet away from flagpole’s base on either side. The flagpole is 30 f

eet high. The ropes each create a triangle with the flagpole, and each right triangle is half of a larger triangle with the flagpole at its center. Area of large triangle:
Mathematics
1 answer:
ipn [44]3 years ago
7 0
18^2x30^2=
324x900=1224
Then you would take the square root of 1224 and get 34.9
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Martin took a total of 20 quizzes over the course of 5 weeks. After attending 15 weeks of school this quarter, how many quizzes
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Answer:

60

Step-by-step explanation:

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9.
olga nikolaevna [1]

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Step-by-step explanation:

7 0
2 years ago
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How did the temperature change if: at first it decreased by 60% and then increased by 80%. PLEASE NEED HELP!
Sergio039 [100]

The temperature decreased by 28%

Step-by-step explanation:

How did the temperature change if :

  • At first it decreased by 60%
  • Then increased by 80%

Assume that the temperature before decreasing is 100%

∵ The temperature before decreasing = 100%

∵ It decreased by 60%

→  Before decreasing  :  decreasing  :    after decreasing

→  100%                         :  60%              :    100% - 60% = 40%

∴ The temperature after decreasing = 40%

Assume that the temperature after decreasing is 100%

∵ The temperature after decreasing = 100%

∵ It increased by 80%

By using the ratio method

→  After decreasing  :  increasing  :    after increasing

→  100%                      :  80%             :   100% + 80% = 180%

→  40%                        :                       :   x%

By using cross multiplication

∴ 100% × x% = 40% × 180%

- Divide both sides by 100%

∴ x% = \frac{(40)(180)}{100}

∴ x% = 72%

∵ At first the temperature = 100%

∵ At last the temperature = 72%

∵ The first the temperature > the last the temperature

∴ The decreasing in temperature = 100% - 72% = 28%

The temperature decreased by 28%

Learn more:

You can learn more about ratio in brainly.com/question/2707032

#LearnwithBrainly

5 0
3 years ago
A shark is at -80 feet. It swims up and jumps out of the water to a height of 15 feet. Write a subtraction expression for the ve
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15-(-80)=95

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6 0
3 years ago
The legs of an isosceles triangle have lengths x + 1 and -x + 7 . The base has length 3x - 3. What is the length of the base?
In-s [12.5K]
Since you've told us that this is an isosceles triangle, we know that the 'legs' have equal length.  So we can write

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Add 'x' to each side:                  2x + 1 =       7

Subtract  1  from each side:      2x       =       6

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Now, if the length of the base is   3x - 3 ,
that length is

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8 0
3 years ago
Read 2 more answers
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