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matrenka [14]
3 years ago
10

What is the circumference of the following circle?

Mathematics
1 answer:
Elodia [21]3 years ago
8 0

Answer:

31.415

Step-by-step explanation:

circumference

= 2\pi  \times radius

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B. 200.96 in. The area of the pizza with a 16" diameter (8" radius) is 201.06.
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Solve the system by substitution!
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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
Given f(x) shown below complete the equation for the inverse of f(x) = x-1
shtirl [24]
Replace f(x) with y
switch x and y
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replace y with f⁻¹(x)

f(x)=x-1
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3 0
3 years ago
Read 2 more answers
• A research scientist measures the outside temperature, in degrees Fahrenheit, at various
polet [3.4K]

Answer:

{t|60 <= t <= 85}

Step-by-step explanation:

The temperatures were measures at different times, but does not stop the values being real numbers (i.e. not discrete, or integer values).

So the range of the function is the set of all values between the minimum and maximum measured during the measuring interval (domain) of hours two and twenty-two.

The minimum value = 60F

The maximum value = 85F

So the interval of the range is [60,85], in interval notation.

In set-builder notation, it is

{t|60 <= t <= 85}

5 0
3 years ago
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