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1 year ago

While you're in the parking lot, you realize that both the lightbulbs and the light switches

Mathematics

1 answer:

Romashka [77]1 year ago

4 0

Cost of Lightbulb = x

cost of switch is x-8

9x + 4(x-8) = 520.50

Use distributive property:

9x + 4x -32 = 520.50

Simplify:

13x -32 = 520.50

Add 32 to both sides:

13x = 552.50

Divide both sides by 13

X = 42.50

A lightbulb costs $42.50

A switch costs 42.50-8 = $34.50

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Given f(x) = 6x^4 – 10x^3 + 40x – 50, find f(2)

ASHA 777 [7]

F(x)=6x^4-10x^3+40x-50, plug 2 in for x
f(2)=6(2)^4-10(3)^3+40(2)-50
f(2)=12^4-30^3+80-50
f(2)=20735-27,000+80-50
f(2)=-6,235

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2 years ago

Suppose a Pony Express rider was paid $192 for 12 weeks of work. If he was paid the same amount each week,how much was he paid f

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2 years ago

Each side of the blanket is 72 inches long?how many inches of ribbon will Risa need?

Dennis_Churaev [7]

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2 years ago

Which represents the solution(s) of the system of equations, y = x^2 - 6x + 8 and y = -x + 4? Determine the solution set by grap

Len [333]

Answer:

(1, 3) and (4,0)

Step-by-step explanation:

The quadratic function is $y=x^2-6x+8$

We can rewrite in the form $y=(x-3)^2-1$

The graph is obtained by shifting the parent quadratic function 3 units right and 1 unit down to obtain the parabola shown in the attachment.

The straight line also have equation $y=-x+4$

The slope is -1 and y-intercept is 4.

We can easily graph this straight line on the same graph as shown in the attachment.

The two graphs intersected at (4,0) and (1,3).

The solution set is therefore {(x,y)|x=4,y=0 or x=1,y=3}

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Step-by-step explanation:

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