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sasho [114]
3 years ago
7

16. The model represents an equation.

Mathematics
1 answer:
nekit [7.7K]3 years ago
6 0

Answer:

The answer is below

Step-by-step explanation:

The model is not given, but I would attached a model and show you how to solve.

Solution:

An equation is a mathematical statement that makes two expressions to be equal to each other. Models can be used to represent equations through the use of various forms such as tiles model, balance scale model, cups and counter model, and so on.

From the model attached, we can form an equation. The equation is given as:

(5 * x) + (-1 * 9) = (-x * 3) + (1 * 20)

5x  + (-9) = -3x + (20)

5x - 9 = -3x + 20

collecting like terms:

5x + 3x = 20 + 9

Simplifying:

8x = 29

8x/8 = 29 / 8

x = 29 / 8

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Step-by-step explanation:

area of triangular face = ½·3·4 = 6 cm²

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6 0
3 years ago
I need help on this math problem:
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E

Step-by-step explanation:

11x-4<15

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5 0
3 years ago
Read 2 more answers
3. At the bank, Sheila made 6 deposits, each in the same amount. Her sister Sherri made 5 deposits, each in the same amount. Eac
shusha [124]
Sheila Total:: 6x
<span>Sherri Total:: 5(x+10) = 5x+50

</span><span>(a) Write an equation. Let x represent the amount of one of Sheila’s deposits.
6x = 5x+50

</span><span>(b) Solve the equation. Show your work.
x = 50

</span><span>(c) Check your solution. Show your work.
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5 0
4 years ago
Help with these math questions grade 12
nalin [4]

Answer:

1. 15.1%

2. 8.3%

3. 12%

4. 25%

Step-by-step explanation:

1.

percent change = (new number - old number)/(old number) * 100%

percent change = (21300 - 18500)/(18500) * 100%

percent change = 15.1%

A positive percent change is a percent increase.

Answer: The percent increase is 15.1%.

2.

percent change = (new number - old number)/(old number) * 100%

percent change = (298000 - 325000)/(325000) * 100%

percent change = -8.3%

A negative percent change is a percent decrease.

Answer: The percent decrease is 8.3%.

3.

percent change = (new number - old number)/(old number) * 100%

percent change = (110 - 125)/(125) * 100%

percent change = -12%

A negative percent change is a percent decrease.

Answer: The percent decrease is 12%.

4.

percent change = (new number - old number)/(old number) * 100%

percent change = (1500 - 2000)/(2000) * 100%

percent change = -25%

A negative percent change is a percent decrease.

Answer: The percent decrease is 25%.

5 0
3 years ago
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