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Nata [24]
3 years ago
11

Find the value of x for both of these questions plz

Mathematics
2 answers:
kramer3 years ago
7 0

Answer:

13- 60, 14- 30

Step-by-step explanation:

number 13 is a 60, 60,60 triangle

number 14 has two identical edges 2 of the corners are the same:

30, 30, 120

leonid [27]3 years ago
5 0

Answer:

for 13 its x=60 and for 14 its x=120

Step-by-step explanation:

for 13 its a equilateral triangle meaning all sides are the same so the answer x=60

for 14 its a obtuse isosceles triangle meaning it has 2 angles that are the same and 1 obtuse angle so the other angles would be 30 and 120. hope this helps :)

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Answer:

The critical value of <em>t</em> at 0.01 level of significance is 2.66.

Step-by-step explanation:

The hypothesis for the two-tailed population mean can be defined as:

<em>H₀</em>: <em>μ </em>= <em>μ₀</em> vs. <em>H₀</em>: <em>μ </em>≠ <em>μ₀</em>

It is provided that the population standard deviation is not known.

Since there is no information about the population standard deviation, we will use a <em>t</em>-test for single mean.

The test statistic is defined as follows:

t_{cal.}=\frac{\bar x-\mu}{s/\sqrt{n}}\sim t_{\alpha/2, (n-1)}

The information given is:

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<em>α</em> =<em> </em>0.01

Compute the critical value of <em>t</em> as follows:

t_{\alpha/2, (n-1)}= t_{0.01/2, (55-1)}=t_{0.005, 54}=2.66

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If the desired degrees of freedom are not provided consider he next highest degree of freedom.

Thus, the critical value of <em>t</em> at 0.01 level of significance is 2.66.

4 0
3 years ago
Pls help i give u brainliest and 5 stars ​
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Answer:

Step-by-step explanation:

Diameter = 14 cm

r = 14/2 = 7 cm

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