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Yuki888 [10]
3 years ago
15

If the sales tax is 8.5% about how much will an 89.95 pair of sneakers cost including sales tax?

Mathematics
1 answer:
Gala2k [10]3 years ago
8 0
8.5% = 0.085 x 89.95 = 7.64675 + 89.95 = 97.59575 rounded to the nearest hundredth is $97.60
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There are 12 boys in a math class. The total number of students s depends on the number of girls in the class g. write an equati
Pani-rosa [81]
12 + g = s
12 boys + g girls = s students
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3 years ago
A cylinder has a radius of 14 m and a height of 6 m.
Irina18 [472]

Volume of the cylinder is 3696 m²

Step-by-step explanation:

  • Step 1: Calculate volume of the cylinder using the formula V = πr²h

⇒ V = 22/7 × 14² × 6 = 3696 m²

8 0
3 years ago
Find the value of x. Round to the nearest tenth. Help please!!!
jasenka [17]

Answer:

x=3

Step-by-step explanation:

Right triangle so you can use pythagorean theorem

a squared + b squared = c squared

b=x

14^2 + b^2= 17^2

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8 0
2 years ago
Read 2 more answers
(CO6) From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is
satela [25.4K]

Answer:

(1) (4.82, 4.98)

(2) Large sample size

(3) Yes, the temperature is within the confidence interval of (37.40, 37.60)

(4) (15.083, 15.117)

Step-by-step explanation:

Confidence Interval (CI) = mean + or - (t×sd)/√n

(1) mean = 4.9, sd = 0.35, n = 68, degree of freedom = n-1 = 68 - 1 = 67

t-value corresponding to 67 degrees of freedom and 95% confidence level is 1.9958

CI = 4.9 + (1.9958×0.35)/√68 = 4.98

CI = 4.9 - (1.9958×0.35)/√68 = 4.82

CI is (4.82, 4.98)

(2) Error margin = (t-value × standard deviation)/√sample size

From the formula above, error margin varies inversely as the square root of the sample size. Since the relationship between the error margin and sample size is inverse, increase in one (sample size) will conversely lead to a decrease in the other (error margin)

(3) mean = 37.5, sd = 0.6, n= 100, degree of freedom = n-1 = 100-1 = 99

t-value corresponding to 99 degrees of freedom and 90% confidence level is 1.6602

CI = 37.5 + (1.6602×0.6)/√100 = 37.5 + 0.10 = 37.60

CI = 37.5 - (1.6602×0.6)/√100 = 37.5 - 0.10 = 37.40

37.53 is within the confidence interval (37.40, 37.60)

(4) mean = 15.10, sd =0.08, n = 104, degree of freedom = n-1 = 104-1 = 103

t-value corresponding to 103 degrees of freedom and 97% confidence interval is 2.2006

CI = 15.10 + (2.2006×0.08)/√104 = 15.10 + 0.017 = 15.117

CI = 15.10 - (2.2006×0.08)/√104 = 15.10 - 0.017 = 15.083

CI is (15.083, 15.117)

4 0
3 years ago
Please and thank you ????????
borishaifa [10]
Y is 5


40 = 8y \\ y =  \frac{40}{8}  = 5



good luck
5 0
3 years ago
Read 2 more answers
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