3 years ago

Use the half angle identity to determine cos105

Mathematics

2 answers:

Lisa [10]3 years ago

7 0

You haven’t showed us the picture

Natalka [10]3 years ago

3 0

Answer:

$-\frac{\sqrt{2-\sqrt{3} } }{2}$

Step-by-step explanation:

B on edge

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A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade

forsale [732]

Answer:

B) μD = 0.60 ± 0.10(1.397)

Step-by-step explanation:

The confidence interval is given by:

$MD±t_{\alpha/2, n-1} \frac{s}{\sqrt{n} }$

Where

MD=60

n=9

df=n-1=8

$t_{\alpha/2, n-1}=1.397$

$s=\sqrt{0.09} =0.3$

Then the confidence interval is

μD=0.60±1.397*(0.3/√9)

μD=0.60±0.10*(1.397)

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2 years ago

What is 8.5 as a fraction?

Contact [7]

8.5 =8 $\frac{1}{2}$ = 17/2
So, answer is 17/2

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2 years ago

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Quadrilateral ABCD is the result of a translation of quadrilateral EFGH. Segment EF is parallel to segment HG in the pre-image.

Mazyrski [523]

The correct answer:
The corresponding segments BC and AD in the image are parallel

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3 years ago

Read 2 more answers

(4m-n-3). 12n13 8m 20

JulsSmile [24]

Answer:

24n^7/m^16

Step-by-step explanation:

Just simplify and rewrite what ever you get simplify again 2 times and now make the calculation as you see every big number is a whole number and is a pair.

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2 years ago

Simplify (4.5)(5)(−2). (1 point) 45 4.5 −4.5 −45

nikitadnepr [17]

The answer is 4.5*5*-2= -45 Thanks!

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3 years ago