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3 years ago

What is the y-intercept of the quadratic function f(x) = (x – 8)(x + 3)?

Mathematics

2 answers:

german3 years ago

3 0

Y= -24
Y-intercept always have x equaling zero

maw [93]3 years ago

3 0

Answer:

(0,-24)

hope this helps you!

(p.s please mark me as brainlyest)

Step-by-step explanation:

I just took the test and got 100%

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a manufacturer has determined that if his company sells x items per day then their profit is given by P=-x^2+ 700 x-10000 euros.

Radda [10]

Answer:

Step-by-step explanation:

To find the minimum amount of items, x, that need to be sold for the manufacturer to make a profit, we can use the quadratic formula

$x = \frac{-b+\sqrt{b^{2}-4ac } }{2a}; x= \frac{-b-\sqrt{b^{2}-4ac } }{2a}$

$x= \frac{-700+\sqrt{700^{2}-4(a)(-10000) } }{2(1)}; x= \frac{-700-\sqrt{700^{2}-4(a)(-10000) } }{2(1)}$

$x= \frac{-700+\sqrt{530000} }{2}; x= \frac{-700-\sqrt{530000} }{2}$

$x=\frac{-700+100\sqrt{53} }{2}; x=\frac{-700-100\sqrt{53} }{2};$

$x=-350 + 50\sqrt53 = 14.005; x = -350 - 50\sqrt53 = -714.005$

In context of the problem, we can only rely on the positive value, as the negative value would lead to a loss of profit.

$(-714.005)^2+700(-714.005)-10000=-0.360$

Furthermore, we must round to the nearest whole number, as you cannot make part of an item.

Lastly, if you were to plug in 14 into the equation for Profit, you would still have a negative number (i.e. a negative profit), thus requiring the manufacturer to make no less than 15 items to make a profit:

$(14)^2+700(14)-10000=-4\\\\(15)^2+700(15)-10000=725$

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2 years ago

A hot-air balloon at 1020 feet descends at a rate of 85 feet per minute. Let y represent the height of the balloon and let x rep

Lady_Fox [76]

Y=1020-85x because since it's a decrease it would be goung do, hence the subtraction

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3 years ago

6(12 - 5) > 50<br> true or false

Alexxandr [17]

False pls mark meh braliest

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2 years ago

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A group of friends had 28 driveways to shovel. If one of them shoveled 1/4 of the driveways, how many driveways did he shovel.

serg [7]

Answer: 7

Step-by-step explanation:

Since we are given the information that a group of friends had 28 driveways to shovel and that one of them shoveled 1/4 of the driveways.

The number of driveways that he shovel will be:

= 1/4 × 28

= 7

Therefore, he shovel 7 driveways.

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3 years ago

a recipe for ice-cream includes 3/4 cup of milk, 1/3 cup cream, and 1/8 cup sugar. which shows the amounts from least to greates

Nina [5.8K]

1/8 = .125
3/4 = .75
1/3 = .333""

1/8, 1/3, 3/4.

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3 years ago

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