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melisa1 [442]
2 years ago
15

HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEe

Mathematics
1 answer:
stellarik [79]2 years ago
4 0
What am I helping you with
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Lines a and b are parallel.
GrogVix [38]
180 - 124 = 56
4x = 180 - (56 + 60)
4x = 180 - 116
4x = 64
x = 16

answer
B. 16
8 0
3 years ago
Find the length of side x in simplest radical form with a rational denominator.<br> X
Aleks04 [339]
Nxjxixjjxxjxjxjxjxj snznznxjx
4 0
3 years ago
Please help me , thank you
natka813 [3]

Answer:

80 degrees

Step-by-step explanation:

one half of the circle makes a straight line and that will equal 180 degrees so 60+45=105

180-105=80

so the missing angle is x=80

4 0
2 years ago
Read 2 more answers
It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per nig
Kitty [74]

Answer: No , at 0.05 level of significance , we have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

Step-by-step explanation:

Let \mu denotes the average hours of sleep per night.

As per given , we have

H_0:\mu=7\\H_a:\mu

, since H_a is left-tailed and population standard deviation is unknown, so the test is a left-tailed t -test.

Also , it is given that ,

Sample size : n= 22

Sample mean : \overline{x}=7.24

Sample  standard deviation : s= 1.93

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}

i.e.  t=\dfrac{7.24-7}{\dfrac{1.93}{\sqrt{22}}}\approx0.58

For significance level \alpha=0.05 and degree of freedom 21 (df=n-1),

Critical t-value for left-tailed test= t_{\alpha, df}=t_{0.05,21}=- 1.7207

Decision : Since the test statistic value (0.58) > critical value  1.7207, it means we are failed to reject the null hypothesis .

[Note : When |t_{cal}|>|t_{cri}|, then we accept the null hypothesis.]

Conclusion: We have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

6 0
3 years ago
The figure is a cylinder with a sphere within it.
Alenkinab [10]
Hey the answer is 2713 cm
4 0
3 years ago
Read 2 more answers
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