2 years ago

F(x) has domain , and range

Mathematics

1 answer:

marta [7]2 years ago

7 0

Domain: {-4, -2, 0, 2, 4}
range: {-2, -1, 0, 1, 2}

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What is the measure of arc AC? A) 33 B) 38 C) 28 D) 45

puteri [66]

Answer:

Step-by-step explanation:

7x-4 is two times 2.5x+4

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3 years ago

The ratio of the measures of the sides of a triangle is 4:9:8. If the perimeter of the triangle is 147 feet, find the measure of

labwork [276]

Answer:

Step-by-step explanation:

4x + 9x + 8x = 147

21x = 147

x = 147/21

x = 7

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The shortest side will be 4x

4*7 = 28

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3 years ago

Find the geometric mean of 50 and 4

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Mean also means average.

$\frac{50+4}{2}=\frac{54}{2} =27$

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2 years ago

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Sin(x2 + y2) da r , where r is the region in the first quadrant between the circles with center the origin and radii 2 and 5

sweet [91]

Converting to polar coordinates gives

$\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_{\theta=0}^{\theta=\pi/2}\int_{r=2}^{r=5}\sin(r^2)r\,\mathrm dr\,\mathrm d\theta$
$=\displaystyle\pi\int_{r=2}^{r=5}2r\sin(r^2)\,\mathrm dr$
$=\displaystyle\pi\int_{r^2=4}^{r^2=25}\sin(r^2)\,\mathrm d(r^2)$
$=-\cos(r^2)\bigg|_{r^2=4}^{r^2=25}$
$=\pi(\cos4-\cos25)$

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3 years ago

Michela’s skateboard ramp is at an incline of 40°. When she attempts a trick on the ramp, she finds that it is too steep. She ad

marissa [1.9K]

Answer:

22.7604763 degrees

Step-by-step explanation:

Note that the answer is NOT 20 degrees.

She adjusted the ramp to half the original incline

Therefore we have tan 40 = x = 0.839099631.

We want an incline of y degrees where tan y = x/2 = 0.839099631/2 = 0.419549815

Taking the arctan of both sides, we get

y = arctan(0.419549815) = 22.7604763 degrees

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2 years ago