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svp [43]
3 years ago
5

The sales tax in one state is 7%. Write a function rule for finding the total cost of an item with selling price x. Then find th

e total cost of a CD player with a selling price of $150.
Mathematics
1 answer:
stira [4]3 years ago
8 0

Answer:

150$ / 7 exact answer is 21.4285714 but estimate is about 21

Step-by-step explanation:

to find percentage you need to divide the whole or total amount by the percent you want to find

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Use the confidence interval to find the margin of error and the sample mean (0.118,0.220)
malfutka [58]

Answer:

μ = 0.169

ME = 0.051

Step-by-step explanation:

The confidence interval is:

CI = μ ± ME

So the mean is the middle of the confidence interval, and the margin of error is half the difference.

μ = (0.118 + 0.220) / 2 = 0.169

ME = (0.220 − 0.118) / 2 = 0.051

5 0
4 years ago
Dana’s parents add $2 to her savings account for every $20 she puts in the account.
a_sh-v [17]

Answer:

A) p = \frac{1}{10} d

Step-by-step explanation:

20(which is d) x \frac{1}{10} = 2 (which is p)

cross checking always helps!

7 0
3 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELP I WILL GIVE BRAINLIEST
Marat540 [252]

Answer:

y >  6x -100  

Step-by-step explanation:

the slope intercept equation of the line is

y=mx+b

m is the slope = (y2-y1) / (x2-x1) so between the y-intercept (0,-100) and the given point (25, 50) we have m= -100-50/0-25 = -150/-25 = 6

y= 6x -100

now we have to figure the inequqlity part so take point (0, 0) that belongs to the solution and substitute in the equation

0 = 6*0 -100

0 = -100  for the equation to be true we have to make it 0 > -100, we also need to make it NOT greater or equal then because the line is doted not solid  so the inequality is

y >  6x -100  

4 0
3 years ago
Read 2 more answers
3500∙(−2)∙(−5)
xeze [42]
3500*10= 35,000 the answer to the question
8 0
3 years ago
Indicate whether classical, empirical, or subjectiveprobability should be used to determine each of the following:
Snezhnost [94]

Answer:

Indicate whether classical, empirical, or subjective probability should be used to determine each of the following probabilities.

Step-by-step explanation:

a)  The probability that a certain model will win the beauty contest

is an example of which type of probability?

B - Classical  

b) "The probability that next card in the deck will be black" is an example of which type of probability?

 

B- Classical

c) "The probability that there will be at least 16 tropical storms this  summer" is an example of which type of probability?

B-Subjective  

d)  "There is a 0.30 probability of randomly selecting a student who has a part- time job " is an example of which type of probability?

A- Subjective

5 0
3 years ago
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