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hjlf
3 years ago
15

ANSWER FAST Jill had the following scores on her math quizzes 20 ,40, 40, 40 ,60 ,60 ,60 ,60 ,80, 80

Mathematics
1 answer:
andrew-mc [135]3 years ago
3 0

Answer: 62.

Step-by-step explanation: The mean is the average. In order to find the average, we need to add all of the numbers up, then divide by the number of quizzes. So:

20 + 40 + 40 +40 + 60 + 60 + 60 + 60 + 80 + 80 + 80 + 80 + 100 = 800

800 / 13 = 61.5, appr. 62.

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3 years ago
Sarah bought a binder for $7.25 and six folders that totaled $9.05 how much did each folder cost
creativ13 [48]

Answer:

Each binder costs 30 cents or $0.30

Step-by-step explanation:

If Sarah's total was $9.05 and the binder costs 7.25 then in order to find the price of the folders you must subtract the cost of the binder (7.25) from the total (9.05) which leaves $1.80 as the amount she paid in total for 6 folders. Next, to find the amount spent per folder divide 1.80 by the number of folders which is 6 and your final answer should be 0.30.

9.25= 7.25+6x (next subtract 7.25 on both sides)

1.80=6x (next divide by six on both sides)

0.30=x

4 0
3 years ago
Read 2 more answers
Drag the tiles to the correct boxes to complete the pairs. simplify the mathematical expressions to determine the product or quo
Sholpan [36]

The simplified mathematical expressions with the first factor to the nearest tenth are:

7.8 x 10

3.3 x 10^{3}

2.1 x 10^{-3}

3.7

<h3>What are the simplified mathematical expressions ?</h3>

Scientific notation is used to simplify large numbers in smaller numbers.  In order to write a number in scientific notation , the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.

(8.6 x 10^{7}) . (9.1 x 10^{-8})

= (8.6 x 9.1) x 10^{7 - 8}

= 78.26 x10^{-1}

= 7.8 x 10

(6.9 x 10^{5}) . (4.8 x 10^{-3})

= 33.12 x 10^{5 - 3}

3.3 x 10^{3}

(3.7 x 10^{2}) . (4.6 x 10^{-3}) ÷ (1.4 x 10^{-6}) . (5.7 x 10^{8})

= 1.7 x 10 ÷ 8 x10²

0.21 x 10^{-2}

2.1 x 10^{-3}

(3.1 x 10^{5}) . (5.3 x 10^{-9}) ÷ (7.3 x 10^{2}) . (6.1 x 10^{-7}) = 3.7

To learn more about scientific notation, please check: brainly.com/question/25334755

#SPJ4

8 0
2 years ago
Quadrilateral MBPV is similar to quadrilateral GKDF. BP = 78 mm, KD = 30 mm , and FD = 45 mm. What is VP? Enter your answer in t
vlada-n [284]

Answer:

  VP = 117 mm

Step-by-step explanation:

Corresponding sides of similar quadrilaterals are proportional.

  VP/FD = BP/KD

  VP = FD·BP/KD = (45 mm)·(78/30) . . . . multiply by FD; fill in the givens

  VP = 117 mm

4 0
3 years ago
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