pattydixon6

26.08.2019 • 

Mathematics

3. three friends, named x, y, and z, use the computer every night. regarding the time in hours each person uses the computer per night, it is known that:
- x time minus y time plus z time is 4;
- twice the time of x plus the quadruple of the time of y plus the time of z is equal to 12;
- the time of x equals the sum of the times of y and z. what is the number of hours of computer use by each friend each night? (note: resolve by cramer rule) / (1.0)

Ответ:

nananna90

15.11.2022

Mathematics

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Let's multiply the dimensions of the drawing by 20.

1 * 20 = 20 ft

2 1/4 * 20 = 45 ft

The perimeter is the sum of all the sides.

45 ft + 45 ft + 20 ft + 20 ft = 130 ft

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