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Maru [420]
3 years ago
13

What is the value of x in this equation?

Mathematics
1 answer:
Pie3 years ago
6 0

Answer:

3

Step-by-step explanation:

View Image

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The first and last choices are the only ones whose angles total 180 degrees, so they're the only possible triangles.
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Ayudenmeee por favor
Dmitry [639]
B because I’m just guessing
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Let mu denote the true average number of minutes of a television commercial. Suppose the hypothesis H0: mu = 2.1 versus Ha: mu &
natka813 [3]

Answer:

A. T > 2.539

Step-by-step explanation:

We have a hypothesis test of the mean, with unknown population standard deviation.

The hypothesis are:

H_0: \mu = 2.1 \\\\H_a: \mu > 2.1

From the hypothesis we can see that the test is right-tailed, so the critical value of t should be a positive value.

The degrees of freedom can be calculated as:

df=n-1=20-1=19

The significance level is 0.01, so the critical value tc should be the one that satisfies:

P(t>t_c)=0.01

Looking up in a t-table, for 19 degrees of freedom, this critical value is tc=2.539.

7 0
3 years ago
Need help on this thank you
krok68 [10]

Answer:

a=7

Step-by-step explanation:

24^2+a^2=25^2

576+a^2=625

49=a^2

a=7

5 0
3 years ago
If f(x) = x3, which of the following describes the graph of f(x − 3)?
ikadub [295]
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