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2 years ago

Solve for each of the following proportions: a. 5/x=30/42 b. x/8=-12/32

Mathematics

1 answer:

andreev551 [17]2 years ago

5 0

Answer:

A. x = 7

B. x = -3

Step-by-step explanation:

A. 5/x = 30/42

5/x = 5/7

5 = 5/7 x

5= 5x/7

5 x 7 = 5x

35 = 5x

35/5 = x

7 = x

x = 7

B. x/8 = -12/32

x/8 = -3/8

x = - 3/8 x 8

x = - 24/8

x = -3

Hope this helps you have a gr8 day :3

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KIM [24]

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2 years ago

What is the length of DE?

miskamm [114]

Answer:

Step-by-step explanation:

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AC *CB = CD CE

4 * (10-4) = CD * 8

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2 years ago

What is the value of x in the function f (x)=4/3x+6 when f (x) = 22?<br> x=?

mamaluj [8]

Answer:

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Step-by-step explanation:

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2 years ago

Write a cubic function with zeros of -3, -5 and 2

Lady bird [3.3K]

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(x-r1)(x-r2)(x-r3)

zeroes of -3,-5,2
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2 years ago

If I have an equation in which x = pounds, and y = total cost, can I substitute quarts into the equation

Colt1911 [192]

Answer:

Yes, you can

Step-by-step explanation:

As a point of reference, assume the equation is:

$y = 5x$

Where

$y = total\ cost$

and

$x = pounds$

In standard unit of conversion:

$1\ pound = 0.4793\ quart$

So:

$x\ pounds = 0.4793x\ quart$

Substitute 0.4793x for x in $y = 5x$

$y = 5 * 0.4793x$

$y = 2.3965x$

The above equation is the equivalent of $y = 5x$ in quarts

<em>So, irrespective of what the equation is, you can always substitute quarts into the equation.</em>

8 0

2 years ago