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SashulF [63]
3 years ago
14

Which of the following statements are correct when deciding whether to use the z or the t distribution?A. Use z when we have a n

ormal population and we know the standard deviation B. Use t when the population is normal and the population standard deviation is not known
Mathematics
1 answer:
slamgirl [31]3 years ago
5 0
The answer is B because
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Consider the trigonometric function f(x)=4cos(2x pi/2) +9
Bas_tet [7]

Answer:

Make use of your knowledge of the maximum and minimum of the cosine function. Then scale and translate according to the way that function is scaled and translated to make f(x).

Step-by-step explanation:

f(x) is the cosine function, multplied by 4 and with 9 added to the result.

The minimum of the cosine function is -1. Multiplying that by 4 gives -4, and adding 9 gives 5.

The maximum of the cosine function is +1. Multiplying that by 4 gives +4, and adding 9 gives 13.

The minimum and maximum of f(x) are 5 and 13, respectively.

5 0
4 years ago
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Guy finds how far his house is from several locations and make the table shown. How much farther away from Guy's house is the li
lisov135 [29]
So, we've got two important and useful information: 
guy's house is 9/10 miles away from the library 
guy's house is 4/10 miles away from the cafe
now, the question will tell us which mathematical operation to use, it says:
how much farther than. that means comparing which means difference which means subtraction. (how much farther than=comparing=differnce=subtraction)
so now we know that we will subtract. but, subtact which number from which number? we need to subtract 4/10 from 9/10 which means it will be equal to 5/10 which can be simplified into 1/2
the answer is basically 5/10 and if you want to look smart for your teacher, you must write simplified=1/2..

hopw this helps... now.. for return i need the brainliest answer.. :) :D
3 0
3 years ago
Flora made 7 withdrawals of $75 each from her bank account. What was the overall change in her account
zheka24 [161]
Her overall change in her account would be -$525, because she withdrew $75 seven times.
7 0
3 years ago
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The m 3 +m 5 =180 true false will mark brainest​
laila [671]

Answer:

true I'm positive that the correct answer

3 0
3 years ago
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Factor the Polynomial: 51c^3-34c
labwork [276]

Answer:

17 c (3 c^2 - 2)

Step-by-step explanation:

Factor the following:

51 c^3 - 34 c

Hint: | Factor common terms out of 51 c^3 - 34 c.

Factor 17 c out of 51 c^3 - 34 c:

Answer: 17 c (3 c^2 - 2)

3 0
3 years ago
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