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Colt1911 [192]
3 years ago
8

There are 25 students in a class at the beginning of the school year and the average number of siblings for each student is thre

e. A new student with eight siblings joins the class in November does the average number of siblings that each student has go up?
Mathematics
1 answer:
Zigmanuir [339]3 years ago
5 0

Answer:  Yes. The new average is 3

<u>Step-by-step explanation:</u>

25 students at 3 siblings each = 75 siblings

26 students has 75 siblings + 8 siblings = 83 siblings

New average is 83 siblings ÷ 26 students = 3.19 siblings per students

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A boat travels 36 miles in 1.5 hours ans then in 14 miles in 0.75 hour. what is the average speed?
allochka39001 [22]

The average speed can be obtained by the formula:

V_{\text{average}}=\dfrac{\text{total distance}}{\text{total time}}.

If a boat travels 36 miles in 1.5 hours ans then in 14 miles in 0.75 hour, then find:

  • total distance is 36+14=50 miles;
  • total time: 1.5+0.75=2.25 hours.

Therefore,

V_{\text{average}}=\dfrac{50}{2.25}=\dfrac{5000}{225}=\dfrac{200}{9}=22.(2) miles per hour.

Answer: V_{\text{average}}=\dfrac{200}{9}=22.(2) miles per hour.

6 0
3 years ago
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Nikita has 1/3 of a kilogram of trail mix. She wants to share it equally among herself and 2 of her cousins. How much trail mix
marishachu [46]

Answer: 1/3divided by 3=x

Step-by-step explanation:

there is 1/3k of trail mix to divide among 3 people

hope this helped

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8 0
3 years ago
an egg of a certain kind of insect called a Tachinidae is 0.00002 long. what is this length in scientific notation?
Natali [406]
Does it want it in standard form e.ge 0.00002 = 2 x 10(to the power of) -5, or is that in m and it wants you to convert it to micrometres?

8 0
3 years ago
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Heres the revenue and expenses for the month. Calculate whether mia had a profite or loss
8_murik_8 [283]

Answer:

profit  $450

Step-by-step explanation:

subtract 9000 (expenses) from the revenue (9450) to get $450 of profit

8 0
3 years ago
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1. Most credit card incentive programs give----
MAXImum [283]
1. Most credit card incentive programs give
    b. cashback
2. To calculate a rewards program incentive, you---
    b. use the percentage number
3. For this we need to solve:
    The cashback is 2% and the purchase amount is $1685.90. We just multiply the percentage to the purchase amount to know what is the 2% of 1685.90.

Solution:
*remember to change the percent to its decimal form by moving the percent two places to the left. 2%=.02

1685.90*.02=33.718 or 33.72

Answer: a
3 0
3 years ago
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