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Ierofanga [76]
3 years ago
12

Cell phone bills for residents of have a mean of $47/line with a standard deviation of $9/line. Find the probability that the av

erage cost/line for the Math
Mathematics
1 answer:
Aleks04 [339]3 years ago
3 0
Dive 9 by 47 to reach ur medium I believe 28
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I need answer quickly
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Answer:

4.47

Step-by-step explanation:

4^2+b^2=6^2

16+b^2=36

-16. -16

√b^2=√20

b=4.47

4 0
2 years ago
The function f(x) = 5One-fifth is reflected over the y-axis. Which equations represent the reflected function? Select two option
postnew [5]

Answer:

The equations that represent the reflected function are

f(x)=5(\frac{1}{5})^{-x}

f(x)=5(5)^{x}

Step-by-step explanation:

The correct question in the attached figure

we have the function

f(x)=5(\frac{1}{5})^{x}

we know that

A reflection across the y-axis interchanges positive x-values with negative x-values, swapping x and −x.

therefore

f(−x) = f(x).

The reflection of the given function across the y-axis will be equal to

(Remember interchanges positive x-values with negative  x-values)

f(x)=5(\frac{1}{5})^{-x}

An equivalent form will be

f(x)=5(\frac{1}{5})^{(-1)(x)}=5[(\frac{1}{5})^{-1})]^{x}=5(5)^{x}

therefore

The equations that represent the reflected function are

f(x)=5(\frac{1}{5})^{-x}

f(x)=5(5)^{x}

9 0
2 years ago
Read 2 more answers
Bill plans to buy a movie ticket for himself and three of his friends. The cost of a ticket is $5.75. How much will he spend on
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he will have a total of $23.00
6 0
3 years ago
Read 2 more answers
PLEASE HELP!!! GEOMETRY<br> please
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Nothing else is given, so for the two triangles to be congruent, the only possible proof is the ASA theorem.
first pairs of angles: 2x+7=x+21 => x=14
second pairs of angles: 8y-4=4y+28 =>y=8
The two triangles share the same side PR
Based on the Angle-Side-Angle Triangle Congruence theorem, these two triangles are congruent with x=14, y=8
(2x+7) +(8y-4) +Q=180 =>85

4 0
3 years ago
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