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kolezko [41]
3 years ago
5

PLEASE HELP FAST!!!! Which could be the first in solving the equation represented by the model below?

Mathematics
2 answers:
iris [78.8K]3 years ago
8 0

Answer:

A. add 4 positive unit tiles to each side

Step-by-step explanation:

The reason is because its easier to solve without having to worry about negatives

Bumek [7]3 years ago
3 0
The answer will be C
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A student throws a heavy ball downward off the top of a building with a speed of 18m/s. The ball reaches a speed of 41m/s just b
DedPeter [7]

Complete question:

A student throws a heavy ball downward off the top of a building with a speed of 18m/s. The ball reaches a speed of 41m/s just before striking the ground. Neglect drag, find the height of the building.

Answer:

The height of the building is 69.235 m

Step-by-step explanation:

Given;

initial velocity of the ball, u = 18 m/s

final velocity of the ball, v = 41 m/s

The height of the building is equal to distance traveled by the ball downward.

Apply the following kinematic equation;

v² = u² + 2gh

where;

g is acceleration due to gravity

h is height of the building

41² = 18² + 2(9.8)h

1681 = 324 + 19.6h

19.6h = 1681 - 324

19.6h = 1357

h = 1357 / 19.6

h = 69.235 m

Therefore, the height of the building is 69.235 m

4 0
3 years ago
Renna pushed the button for the elevator to go up, but it would not move. The weight limit for the elevator is 450 kilograms, bu
alina1380 [7]
Here is the solution based on the given situation above.
Given: 450 kg = weight limit of the elevator
           750 kg = current weight of the group of passengers
           ? = number of passengers who weigh 70 kgs that need to get off the elevator
So to get the answer, first we need to deduct 450kg from 750 kgs to get the excess weight. So 750 - 450 is 300kgs. Next, we divide 300 by 70kgs to get the number of passengers that need to get off so 300/70 is 4.3. Therefore, there should be 4 passengers who weigh 70 kilograms that need to get off the elevator. 
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4 years ago
Read 2 more answers
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gayaneshka [121]
See the attachment....

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Answer:

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What is the simplified form of the following expression?
LUCKY_DIMON [66]
The answer is (a) 2x^4 y^8
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3 years ago
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