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2 years ago

Find the x-intercepts of the graph of y=x^2+4x-45

Mathematics

1 answer:

Eva8 [605]2 years ago

4 0

Answer:

(-9, 0) (5, 0)

Step-by-step explanation:

if we set y to 0, then we get:

0 = $x^{2}$ + 4x - 45

Now, we have to find what the x value is to equal 0.

0 = $-9^{2}$ + 4(-9) - 45

0 = 81 - 36 - 45

0 = 45 - 45

0 = $5^{2}$ + 4(5) - 45

0 = 25 + 20 - 45

0 = 45 - 45

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Answer:

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1 year ago

Solve 34x−5<8. Round your answer to the nearest thousandth

Snowcat [4.5K]

Answer:

x < 0.382

Step-by-step explanation:

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2 years ago

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nikitadnepr [17]

Answer: The population would be the data of temperatures of all food served by the restaurant.

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2 years ago

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Alekssandra [29.7K]

Answer:

asa

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2 years ago

Read 2 more answers

1. Thom has a scale model of his car. The

MariettaO [177]

$x =\frac{4}{3}inch$ is the size in wheels on the scale model .

<u>Step-by-step explanation:</u>

Correct Question : Tom has a scale model of his car. The scale factor is 1 : 12. If the actual car has 16-inch wheels, what size are the wheels on the scale model?

We have , The scale factor is 1 : 12. We need to find If the actual car has 16-inch wheels, what size are the wheels on the scale model .Let's find out:

Ratio of size of wheels to actual size of wheels is 1:12 , but actual car has 16-inch wheels So ,

⇒ $\frac{1}{12} = \frac{x}{16}$ { x is size of wheel in scale model }

⇒ $\frac{1(16)}{12} = \frac{x}{16}(16)$

⇒ $x =\frac{16}{12}$

⇒ $x =\frac{4}{3}inch$

Therefore , $x =\frac{4}{3}inch$ is the size in wheels on the scale model .

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3 years ago