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Fiesta28 [93]
3 years ago
8

Alexis bought $17 worth of gifts for her friends. she needs to add 17% in tax.

Mathematics
1 answer:
brilliants [131]3 years ago
3 0

Answer:

$19.89

Step-by-step explanation:

$17.00 x .17% tax=$2.89

$17.00 + $2.89=$19.89

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Jovie is maintaining a camp fire. She has kept the fire steadily burning for 10 hours with 15 logs. She wants to know how many h
tester [92]

Answer:

6 hours

Step-by-step explanation:

We can use ratios to solve

10 hours           x hours

-------------- = -------------

15 logs            9 logs

Using cross products

90 = 15x

Divide by 15

90/15 = 15x/15

6 = x

6 hours

7 0
3 years ago
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2. Which product is negative?
Paul [167]

Answer:

B) , C)

Step-by-step explanation:

Assuming that you are multiplying each of the numbers for each given answer.

Look at the amount of negative signs provided. Odd amounts of negative will always guarantee a product of a negative answer. Even amounts of negative will always guarantee a product of a positive answer.

In this case, C. -4 , -4 , -4 , 4 & B. -4 , -4, -4, 4 are your answers, for both only have 3 negative signs, which would make a negative answer.

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8 0
3 years ago
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If 2/8 of a class has a pencil and 2/6 of the class has pins but no pencils, how many more students have pins then pencils?
vekshin1

Answer:

.

Step-by-step explanation:

5 0
2 years ago
A nutrition laboratory wants to construct a 95% confidence interval for the mean sodium content of "reduced sodium" hot dogs. A
tatuchka [14]

Answer:

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

Step-by-step explanation:

Given;

Standard deviation r= 25mg

Width of confidence interval w= 10mg

Confidence interval of 95%

Margin of error E = w/2 = 10mg/2 = 5mg

Z at 95% = 1.96

Margin of error E = Z(r/√n)

n = (Z×r/E)^2

n = (1.96 × 25/5)^2

n = (9.8)^2

n = 96.04

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

6 0
3 years ago
4(x+2)=30 <br> I need help
mars1129 [50]

Answer:

x = 11/2

Step-by-step explanation:

8 0
3 years ago
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