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2 years ago

Which equation represents an inverse variation?

Mathematics

1 answer:

Sphinxa [80]2 years ago

7 0

Answer: Choice C) y = 30/x

Inverse variation equations are of the form y = k/x. In this case, k = 30. We can rearrange the format to get x*y = k after multiplying both sides by x. So y = 30/x can be turned into x*y = 30.

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During the past year in the maternity ward of a hospital in a large city, 1,254 males were born and 1,462 females. If we can ass

Afina-wow [57]

$\frac{1,254}{1,254+1,462} / \frac{1,462}{1,254+1,462}\\ \frac{1,254}{2,716} / \frac{1,462}{2,716}\\\frac{627}{1,358} / \frac{731}{1,358}$

Chance of boy: 627/1,358

Chance of girl: 731/1,358

6 0

3 years ago

Franco and Marcia getting high speed Internet access at the same time. Francos provider charges $60 for installation and $42.95

In-s [12.5K]

Answer:

4 months

Step-by-step explanation:

Franco's provider = 60 + 42.95x

Marshal's provider = 57.95x

Where,

x = number of months

Equate both charges

Franco's provider = Marshal's provider

60 + 42.95x = 57.95x

Subtract 42.95x From both sides

60 + 42.95x - 42.95x = 57.95x - 42.95x

60 = 15x

Divide both sides by 15

60 / 15 = 15x / 15

4 = x

x = 4 Months

Franco and Marshal would have paid the same amount for high-speed Internet service after 4 months

7 0

3 years ago

Find the slope of the line

Law Incorporation [45]

Answer:

-2

Step-by-step explanation:

$y = - 2x$

the line is going down meaning its a negative and to find the slope do rise over run

4 0

3 years ago

For each rectangle below, write a linear equation that represents the area y of the rectangle. Solve this system of two linear e

Hatshy [7]

(5,24)

The two areas are the same.

To find the area, we multiply the side lengths. Y=area

Rectangle 1: side lengths 4 and (x+1)

y=4(x+1)= 4x+4

Rectangle 2: side lengths 3 and (2x-2)

y=3(2x-2)= 6x-6

Since the two areas are same, we can conclude that

4x+4=6x-6

Now, simplify.

-2x=-10, x=5

Since x is 5, we can plug it into the equations to find y.

Option 1 with rectangle 1: y=4(5)+4, y=24

Option 2 with rectangle 2: y=6(5)-5, y=24

I graphed the linear equation on desmos.

5 0

2 years ago

HELP WHAT IS IT ITS DUE IN 4 MINUTES<br>

rusak2 [61]

Answer:

Step-by-step explanation:

f(x + 1) = 8(x + 1) + 1 = 8x + 8 + 1 = 8x + 9

7 0

3 years ago