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Morgarella [4.7K]
2 years ago
8

PLEASEEE HELP 100 POINTSSS AND BRAINLIEST!!!! THANKSSSSS <33

Mathematics
2 answers:
Sergio039 [100]2 years ago
8 0

Answer:

The answer would be a

Step-by-step explanation:

An acute angle is an angle with two similar sides an obtuse angel is an very wide trianglee

fredd [130]2 years ago
6 0

Step-by-step explanation:

please mark me as brainlest

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1, 3/5, 9/25<br><br> Find the 8th term.
timofeeve [1]

Answer:

Step-by-step explanation:

This is a geometric sequence.

a = first term = 1

Common ratio = r = second term ÷ first term

                        = (3/5)÷ 1 = 3/5

t_{n}=ar^{n-1}\\\\t_{8}=1*(\dfrac{3}{5})^{7}\\\\= \dfrac{3^{7}}{5^{7}}\\\\\\= \dfrac{2187}{78125}

8 0
2 years ago
18. A set of data has a sample mean of 65.4 and a standard deviation of 1.2. If the sample size is 45, what is the 99% confidenc
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Given:

Sample mean = 65.4

Standard deviation = 1.2

Sample size = 45

Confidence level = 99%

To find:

The confidence interval.

Solution:

The formula for confidence interval is

CI=\overline{x}\pm z^*\dfrac{s}{\sqrt{n}}

where, \overline{x} is sample mean, z* is confidence value, s is standard deviation and n is sample size.

Confidence value or z-value at 99% = 2.58

Putting the given in the above formula, we get

CI=65.4\pm 2.58\times \dfrac{1.2}{\sqrt{45}}

CI=65.4\pm 0.46

CI=65.4-0.46\text{ and }CI=65.4+0.46

CI=64.94\text{ and }65.86

Therefore, the correct option is D.

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3 years ago
A sphere with center A is shown. Which represents a radius?
Lunna [17]
A because radius is half of the diameter
5 0
3 years ago
Read 2 more answers
Can i have some help
Katarina [22]

Answer:

I am so sorry but the link will not let me see the question

Step-by-step explanation:

could you put a screen shot of the question and maybe i could try to help :)

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