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Vladimir79 [104]
2 years ago
7

Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85, and 83, what score does she

need on the fifth exam for her overall mean to be at least 78?
Mathematics
1 answer:
vovikov84 [41]2 years ago
4 0

Answer:

The answer would be a 70

Step-by-step explanation:

If her scores on the first four exams are 71, 69, 85, and 83, what score does she need on the fifth exam for her overall mean to be. a. at least 70

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How long does it take a runner to run 12km if he is running at a speed of 7km/h
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A 3-gallon bottle of fabric softener costs $28.92. What is the price per quart?
bixtya [17]

Answer:

$2.41

Step-by-step explanation:

There are 4 quarts in a gallon. If there are 3 gallons that means there is 12 quarts (3x4=12) You then take $28.92 and divide it by 12, which will give you 2.40833333 and on and on, you round that to $2.41. I hope that helps!

8 0
2 years ago
3/4(8x-4)=7x+2, I need to find out the answer
laiz [17]

Answer: x = -5

Step-by-step explanation:

First convert 3/4 to decimal= 0.75

0.75 (8x - 4) = 7x + 2

6x - 3 = 7x + 2

Transpose 7x from right hand side to the left hand side

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I hope this helps.

8 0
2 years ago
5 pts
ruslelena [56]

Answer:

{8, 24, 72, 216, 648}

Step-by-step explanation:

Geometric sequence:

In a geometric sequence, the quotient of consecutive terms is always the same, that is, each term is the previous term multiplied by the common ratio.

In this question:

First element is 8, common ratio of 3. So

Second term: 8*3 = 24

Third term: 24*3 = 72

Fourth term: 72*3 = 216

Fifth term: 216*3 = 648

So the answer is {8, 24, 72, 216, 648}

4 0
2 years ago
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