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Zina [86]
3 years ago
15

PLEASE HELP ASAP!!! 7th Grade Math.​

Mathematics
1 answer:
Otrada [13]3 years ago
7 0

Answer:

1,300

Step-by-step explanation:

First, we need to substitute all the variable with the given number.

To figure out the 2 equivalent squares, do 20 x 20 , which is 400.

Then, the 3rd triangle, do 28 x 25 , equaling 700.

Lastly, for the 2 triangles, 20 x 20 / 2 , leading to the solution of 200.

Now, putting everything together by adding 400+700+200, the final answer is 1,300.

I hope this helped!!

~ Penny

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lozanna [386]

Answer:

a - 1/50 is the ans

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1/50 is also 0.02

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3 years ago
(4, -3), (x, 1); slope -4
Alexandra [31]

Answer:

x = 3

Step-by-step explanation:

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- 4 =  \frac{1 - ( - 3)}{x - 4} \\  - 4(x - 4)   = 1 + 3 \\  - 4x  + 16 = 4 \\  - 4 x = 4 - 16 \\  - 4x =  - 12 \\  x=  \frac{ - 12}{ - 4}  \\ x = 3

3 0
3 years ago
A scale model of a rectangular building lot measures 7feet by 5 feet. If the actual house will be built using a scale factor of
Tamiku [17]
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Step-by-step explanation:
Length of the rectangular building = 7 feet
Width of the rectangular building = 5 feet
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5 0
2 years ago
Does the table show a direct proportional relationship? If so, what is the constant of proportionality?
lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality (k) is described by the following expression:

k = \frac{y}{x} (1)

Where:

x - Input.

y - Output.

If we know that (x_{1}, y_{1}) = (13, 45.5), (x_{2}, y_{2}) = (14, 49) and (x_{3}, y_{3}) = (15, 52.5), then the constants of proportionalities of each ordered pair are, respectively:

k_{1} = \frac{y_{1}}{x_{1}}

k_{1} = \frac{45.5}{13}

k_{1} = \frac{7}{2}

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k_{2} = \frac{7}{2}

k_{3} = \frac{y_{3}}{x_{3}}

k_{3} = \frac{52.5}{15}

k_{3} = \frac{7}{2}

Since k_{1} = k_{2} = k_{3}, the constant of proportionality is 3.5.

8 0
3 years ago
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Ashley lost approximately 0.53 pounds per day. After 30 days, she lost 16 pounds and 16/30=0.53
8 0
2 years ago
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