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3 years ago

If f(x) = 4x + 12 is graphed on a coordinate plane, what is the yintercept of the graph?

Mathematics

2 answers:

Aneli [31]3 years ago

6 0

Answer:

Step-by-step explanation:

this equation is in slope intercept form which is

y=mx+b

you just have to remember that m is your slope and b is your y intercept

therefore, the y intercept is 12

MAVERICK [17]3 years ago

6 0

It would be 12

If you need an explanation just tell me

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David wants to fill his backyard swimming pool. His garden hose delivers 40 gallons in 5 minutes. How many gallons of water will

svetlana [45]

Answer:

Part a) $160\ gallons$

Part b) $480\ gallons$

Step-by-step explanation:

Part a) How many gallons of water will be in the pool after 20 minutes?

we know that

Using proportion

$\frac{40}{5}\frac{gallons}{minutes}=\frac{x}{20}\frac{gallons}{minutes} \\ \\x=40*20/5\\ \\x=160\ gallons$

Part b) How many gallons of water will be in the pool after 1 hour

we know that

1 hour = 60 minutes

Using proportion

$\frac{40}{5}\frac{gallons}{minutes}=\frac{x}{60}\frac{gallons}{minutes} \\ \\x=40*60/5\\ \\x=480\ gallons$

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3 years ago

There are 3 strawberry yoghurts, 2 peach yoghurts and 4 cherry yoghurts in a fridge.

wlad13 [49]

Step-by-step explanation:It says:

There are 3 strawberry yoghurts, 2 peach yoghurts and 4 cherry yoghurts in a fridge.

Kate takes a yoghurt at random from the fridge.

She eats the yoghurt.

She then takes a second yoghurt at random from the fridge.

Work out the probability that both yoghurts were the same flavour.

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3 years ago

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Please work out -80 ÷ -8

Daniel [21]

Answer:

Step-by-step explanation:

-80 / -8 = 10

the negatives cancel each other out

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2 years ago

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What is the area of the triangle in the diagram?

dsp73

Answer:

The answer is the 2nd one

Step-by-step explanation:

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3 years ago

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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !

victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

$2x^2+18x=20$

$x^2+9x=\frac{20}{2}$

$x^2+9x-10=0$

$ax^2+bx+c=0$

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

$D=b^2-4ac=(9)^2-4(1)(-10)=121$

$x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1$

$x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)$

The solution of the given quadratic equation is 1 and (-10).

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2 years ago