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zvonat [6]
3 years ago
13

the variable Y is directly proportional to the variable X if Y= 32 when X= 20 what is the value of x when y= 40​

Mathematics
2 answers:
Karolina [17]3 years ago
3 0

Answer:

x = 25

Step-by-step explanation:

A directly proportional relationship satisfies a proportion or two equal ratios. You can create a ratio between x and y coordinates written as y/x.

So when y = 32 and x= 20, the ratio is 32/20. If y = 40, what is x? This is the ratio 40/x. Set them equal in a proportion. Then cross multiply to solve for x.

\frac{32}{20} = \frac{40}{x}

32(x) = 20(40)

32x = 800

x = 25

MrMuchimi3 years ago
3 0

Answer:

25

Step-by-step explanation:

25

y = kx

32 = 20k

8

5

= k

40 =

8

5

x

5

8

(40) = x

25 = x

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faltersainse [42]

The Scale used on blueprint is 1 inches represents 4/3 feet

Scaling is the increase or decrease in size of a figure or object so as to create an image of that object.

Since on the blueprint, the walls measure 10 feet by 12 feet but on the blue print it measures 7.5 inches by 9 inches. Hence:

Scale used on blueprint is 7.5 inches = 10 feet or 9 inches = 12 feet

1 inches = 4/3 feet

The Scale used on blueprint is 1 inches represents 4/3 feet

Find out more at: brainly.com/question/20095188

7 0
2 years ago
What is the value of x in 145.95-2x=-4.05?
kotykmax [81]
145.95 - 2x = -4.05
subtract -145.95 from both side of the equation
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Final answer

Hope this helps!!!!
3 0
3 years ago
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Ierofanga [76]

Answer:

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6 0
2 years ago
Please help me A.S.A.P.
Vikentia [17]

Answer:

700 Dollars

Step-by-step explanation:

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5 0
2 years ago
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The area of a certain square is 900 square inches. What is the perimeter of this square in inches?
finlep [7]

Answer:

The perimeter of a square with an area of 900 square feet is 120 ft.

Step-by-step explanation:

Calculation of the perimeter of the square:

Since the area is 900 square feet

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So, length of one side should be 30

Now the perimeter should be

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Hence, The perimeter of a square with an area of 900 square feet is 120 ft.

4 0
1 year ago
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