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k0ka [10]
2 years ago
14

Помогите решить, пожалуйста, с 1-8. Дам 50 баллов.​

Mathematics
1 answer:
kifflom [539]2 years ago
5 0

Answer:

Step-by-step explanation:

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What is the surface area of a cube in which each face of the cube has an area of 7 cm^2?
prisoha [69]

Answer:

In a cube, the length and width are the same, so both sides will be 7 cm, yielding an area of 49 square centimeters. The surface area of a 7 cm cube will be 294 cm2 . Hope this helps!

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3 years ago
The area of a square is 484 square inches. How long is each side?
hodyreva [135]

Answer:

\sqrt{484} =22

Step-by-step explanation:

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2 years ago
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The price of a watch was increased by 20% to 198. What was the price before the increase?
RoseWind [281]

To find the original price before the increase, divide the new price by 1 + the percent of increase.

198 / 1.20 = 165

The original price was $165

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3 years ago
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Mason and Laney run laps. The ratio of the number of laps Mason ran to the number Laney ran was 2:3.
3241004551 [841]

Using proportions, it is found that Mason ran 620 meters.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

Considering the ratio, the <em>rule of three</em> is given as follows:

2 laps for Mason - 3 laps for Laney.

n meters for Mason - 930 meters for Mason.

Applying cross multiplication:

3n = 930 x 2

n = 930 x 2/3

n = 620

Mason ran 620 meters.

More can be learned about proportions at brainly.com/question/24372153

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3 0
2 years ago
these cards are put int a bag. One card is chosen at random. (1,2,3,4,5,6,7,8,9,10) a.) what is the probability of choosing the
Rama09 [41]

Answer:

There are 10 cards in total.

The probability of choosing card with the number 4 is 1/10.

The probability of choosing card with the number 1 is 2/10 = 1/5 (since there are 2 cards with the digit 1 - 1, 10)

5 0
3 years ago
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