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sertanlavr [38]
3 years ago
7

The drill team at Hill Middle School made 120 spirit pins to sell for a fundraiser. After the fundraiser, the team had 18 pins l

eft. What percent of the pins did the team sell?
a. 15% b. 82% c. 18% d. 85%

Arline companies de ice their planes with glycol. a compound that has a freezing point 80 degrees F lower than the freezing point of water. The freezing point of water is 32 degrees F. What is the freezing point of glycol in Fahrenheit?
Mathematics
1 answer:
Marizza181 [45]3 years ago
3 0

no 1) is 85%

no 2) is 32 - 80 = -48

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If y varies inversely as x and y = 8 when x = 9, find x when y = 12.
myrzilka [38]

Answer:

x = 6

Step-by-step explanation:

An inverse variation is

xy = k where k is the constant of variation

8*9 = k

72 = k

xy = k

Let y = 12

x*12 = 72

Divide each side by 12

12x/12 =72/12

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Y-intercept of a line that has a slope of 2 and passes<br> through the point (4, 6).
tia_tia [17]

Answer:

<h2>         b = -2</h2>

Step-by-step explanation:

The point-slope form of equation is: y - y₀ = m(x - x₀), where (x₀, y₀) is any point the line passes through and m is the slope.

m = 2

(4, 6)    ⇒   x₀ = 4,  y₀ = 6

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y - 6 = 2(x - 4)

Changing to the slope-intercept form of the equation of the line (y = mx + b, where m is the slope and b is the y-intercept of the line):

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y = 2x - 2    ⇒  b = -2

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