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xxTIMURxx [149]
4 years ago
14

I need help on this please!!

Mathematics
1 answer:
Gwar [14]4 years ago
3 0

Answer:

C

Step-by-step explanation:

Using the trigonometric identity

csc x = \frac{1}{sinx}

Given

sinΘ = - 0.4, then

cscΘ = \frac{1}{-0.4} = - 2.5 → C

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What value must be defined for to remove the discontinuity of this function at ?
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Answer:

Option D. 8

Step-by-step explanation:

we have

f(x)=\frac{x^{2}-16 }{x-4}

Remember that

x^{2}-16 =(x+4)(x-4)

substitute

f(x)=\frac{(x+4)(x-4)}{x-4}

Remove the discontinuity at x=4

Simplify

f(x)=(x+4)

so

Find the value of f(4)

For x=4

f(4)=(4+4)=8

4 0
3 years ago
Compute the standard deviation of the following set of data to the nearest whole number: 8, 12, 15, 17, 18
attashe74 [19]
We have that

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step 1
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step 2
 for each number: subtract the Mean and square the result
(8-14)²----->36
(12-14)²----> 4
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step 3
<span> work out the mean of those squared differences
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step 4
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the answer is
4
7 0
3 years ago
Can someone write a full proof for #20?
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4 years ago
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Mariana [72]
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Read 2 more answers
Find x- and y-intercepts. Write ordered pairs representing the points where the line crosses the axes. x+y=6
maks197457 [2]

Answer:

<h2>x-intercept = 6 → (6, 0)</h2><h2>y-intercept = 6 → (0, 6)</h2>

Step-by-step explanation:

x + y = 6

x-intercept is for y = 0. Substitute:

x + 0 = 6

x = 6

y-intercept is for x = 0. Substitute:

0 + y = 6

y = 6

8 0
4 years ago
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