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Ira Lisetskai [31]
2 years ago
9

You buy items totaling $52.25 with a 6% sales tax. You give the clerk three $20.00 bills. Figure the following amounts:

Mathematics
2 answers:
schepotkina [342]2 years ago
8 0
A- 3.13
B- 55.38
C- 4.62
gladu [14]2 years ago
8 0

Answer for A:

The sales tax for a purchase of $52.25 is $3.14 (to the nearest cent)

Explanation:

Looked it up

Answer for B:

The total cost including tax is $55.39 (to the nearest cent)

Explanation:

Calculator

Answer for C:

The amount of change you should get is $4.61

Explanation:

Since you gave the clerk three $20 bills, or $60, we subtract the total cost from 60

60 - 55.39 = 4.61

Thus the change should equal $4.61

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The value of 9 is 90 because it is in the tens place.
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Suppose a simple random sample of size nequals81 is obtained from a population with mu equals 79 and sigma equals 18. ​(a) Descr
Daniel [21]

Answer:

(a) The sampling distribution of\overline{X} = Population mean = 79

(b)  P ( \overline{X} greater than 81.2 ) =  0.1357

(c) P (\overline{X} less than or equals 74.4 ) = .0107

(d) P (77.6 less than \overline{X} less than 83.2 ) = .7401

Step-by-step explanation:

Given -

Sample size ( n ) = 81

Population mean (\nu) = 79

Standard deviation (\sigma ) = 18

​(a) Describe the sampling distribution of \overline{X}

For large sample using central limit theorem

the sampling distribution of\overline{X} = Population mean = 79

​(b) What is Upper P ( \overline{X} greater than 81.2 )​ =

P(\overline{X}> 81.2)  = P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}> \frac{81.2 - 79}{\frac{18}{\sqrt{81}}})

                    =  P(Z> 1.1)

                    = 1 - P(Z<   1.1)

                    = 1 - .8643 =

                    = 0.1357

(c) What is Upper P (\overline{X} less than or equals 74.4 ) =

P(\overline{X}\leq  74.4) = P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}\leq  \frac{74.4- 79}{\frac{18}{\sqrt{81}}})

                    = P(Z\leq  -2.3)

                    = .0107

​(d) What is Upper P (77.6 less than \overline{X} less than 83.2 ) =

P(77.6< \overline{X}<   83.2) = P(\frac{77.6- 79}{\frac{18}{\sqrt{81}}})< P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}\leq  \frac{83.2- 79}{\frac{18}{\sqrt{81}}})

                                = P(- 0.7< Z<   2.1)

                                 = (Z<   2.1) - (Z<   -0.7)

                                  = 0.9821 - .2420

                                   = 0.7401

3 0
3 years ago
Please help me find the angle of these, Also show work if possible so i can use it for future lessons.
Vaselesa [24]

Angle 3 is

180-47-62=

100-9=

91 degrees

Angle two is

180-62=

118 degrees

Angle one is

180-22-118=

180-140=

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-Hunter

8 0
2 years ago
The perimeter of a rectangle is 136 ft. The ratio of its length to its width is 9:8. What are the dimensions of the rectangle?
KATRIN_1 [288]
2100000000000000000000000000000000000000000000000000000000000000000




4 0
3 years ago
Read 2 more answers
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