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4 years ago

10

What is unique about 9.8N/kg?

1 answer:

sveticcg [70]4 years ago

4 0

<span>9.8 crops up in a number of situations. The force of gravitational attraction on a mass of 1 kg on the Earth is 9.8 N. ... Strictly speaking the force of gravitational attraction on a mass in a gravitational field of N/kg is although the in that equation is often called the acceleration due to gravity. Hope this helps!!!</span>

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I added the screenshot of the question if you could let me know the answer and how u got it please and thank you.

jeka57 [31]

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3 years ago

Felicia bought a jackhammer priced at $8.48. The total price, including sales tax, was $9.73. What was the sales tax percentage?

lys-0071 [83]

Answer:

14.7%

Step-by-step explanation:

GIVEN: Felicia bought a jackhammer priced at $\$8.48$ . The total price, including sales tax, was $\$9.73$ .

TO FIND: What was the sales tax percentage.

SOLUTION:

Price of jackhammer $=\$8.48$

Total price including sales tax $=\$9.73$

Total sales tax on jackhammer $=9.73-8.48=\$1.25$

Total sales tax percentage $=\frac{1.25}{8.48}\times100=14.7\%$

Hence the total sales tax percentage on jackhammer is 14.7%

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4 years ago

I need help on how to solve this and what the answer is

stiks02 [169]

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3 years ago

A professor wants to estimate how many hours per week students study. A simple random sample of 78 students had a mean of 15.0 h

OleMash [197]

Answer:

interval=(15.085,14.9515)

Step-by-step explanation:

Table:

CI Z

85% 1.440

90% 1.645

95% 1.960

In order to find the interval/estimate of hours per week students study we consider the formula given below:

Interval=X± $\frac{Z*S}{\sqrt{n} }$

where:

X is the mean hours

Z is the value from Z distribution table of Confidence Interval

n is the sample size of students

S is the standard deviation

X=15, Z=1.645, S=2.3hours, n=78

Interval=15± $1.645*2.3/\sqrt{78}$

Interval=15±0.0485

interval=(15.085,14.9515)

7 0

3 years ago

PLS HELP ME WITH 8. A and B (SHOW WORK!!) + LOTS OF POINTS!

Lady bird [3.3K]

To find cost per each you divide $18 by 8 and get $2.25 per book.
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3 years ago