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77julia77 [94]
3 years ago
15

What is an equation for the line that passes through the points (-2, 3) and (2, 1)?​

Mathematics
1 answer:
wolverine [178]3 years ago
8 0

Answer:

y=-4+-1

Step-by-step explanation:

hope this is what your looking for

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Find the exact value of sin (x-y) if sinx=4/9 and siny=1/4
Svetach [21]

Answer:

sin(x - y) = 0.21

Step-by-step explanation:

we have the sin values which we need to get cos values

sin (A-B) = sin A cos B - sin B cos A

sin² A + cos² A = 1

sin x = 4/9

cos² x = 1 - sin² x = 1 - 16/81 = 65/81

cos² x = 65/81

cos x = √65/9

sin y = 1/4

cos² y = 1 - sin² y = 1 - 1/16 = 15/16

cos² y = 15/16

cos y = √15/4

sin(x − y) = sin x cos y - sin y cos x

sin(x - y) = 4/9 √15/4 - 1/4 √65/9

sin(x - y) = (4√15-√65)/36

sin(x - y) = 0.21

socratic Narad T

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2 years ago
Find the volume of the sphere. Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and round
olga55 [171]

Answer:

3053.63

Step-by-step explanation:

Use the equation for sphere volume: V=\frac{4}{3}\pi r^3

Plug the values in and get V=\frac{4}{3}\pi 9^3=3053.62805929

≈ 3053.63

Note: exact value of pi used.

8 0
2 years ago
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In order to estimate the mean amount of time computer users spend on the internet each​ month, how many computer users must be s
levacccp [35]

Answer:

1877 computer users

Step-by-step explanation:

We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.

We apply the following formula:

n = [z * sd / E] ^ 2

replacing:

n = [1.96 * 221/10] ^ 2

n = 1876.27

that is, the minimum sample size is 1877

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2 years ago
What is the solution to this system of equations PLEASE HURRY
VARVARA [1.3K]

Answer:

-6,-2

Step-by-step explanation:

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3 years ago
Please help me!!<br> 2(5 – x)^4/3 -11 =151
larisa [96]

Answer:

-\frac{\left(-x+5\right)^4}{4}\\

7 0
3 years ago
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