MATHEMATICS MIDDLE SCHOOL

jamie wants to run a total of 9 miles thid week. so far, she has run 4 5/8 miles. use the equation 4 5/8 + r = 9​. please help me!

Answers

Answer 1
Answer:

Answer:

r = 4 3/8

Step-by-step explanation:

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Number 36 I need help on please thank you?!!

Answers

Well, if 20% is 6, then you have to multiply it by 5 to get the whole class. 6 x 5 = 30. So in conclusion, the number of students is 30. Hope this helped!
30 as 6 =20% ×5 = 100% = 30

You score an 86 on the first of two exams. Write and solve an equation to find the score x that you need on the second exam to have a mean score of 90.

Answers

The score in the second exam is 94.

What is a Mean?

  • Mean is the average value of all the numbers in the given set.
  • Mean is calculated to get the average outcome.

Given:

Score in the first exam = 86

Mean score of two exams = 90

We have to find the score of second exam.

Let the score of second exam be x.

We know, mean is given by:

⇒ Mean = (Total score in all the exams) / (Total number of exams)

Here,

Total score in all the exams = 86 + x

Total number of exams = 2

Mean = 90             (given)

⇒ 90 = (86 + x)/2

⇒ 90 × 2 = 86 + x

⇒ 180 = 86 + x

⇒ x = 180 - 86

⇒ x = 94

Therefore, the score in the second exam is 94.

Learn more about the Mean here: brainly.com/question/15823385

#SPJ2
I haven't touched on mean, mode, medium, and range in a little while so I could be wrong, but if (mean) means average, i think average is adding 2 grades together then dividing the number of exams, so the average needs to be 90, so what I did was i found the difference between the original grade on the first exam, so 90-86=4, so i guessed at 94 being the next grade needed. (86+94)/2=90. 86+94=180 then divide 180 by 2 and it equals 90. so yeah your answer is 94.

What is the volume of a right rectangular prism that is 4 yards by 1.5 yards by 8 yards?

Answers

Steps:
1. Multiply 4 by 1.5 which equals 6
2. Do 6 times 8
3. Your answer is 48
With volume you have to multiply the length x width x height
V=abc\n\nV=4\cdot1.5\cdot8\nV=48\hbox{ yd}^3

!!!PLEASE HELP, NEED QUICKLY!!!(I dont know if i have the last two in the correct spaces, but im pretty sure on the last one)
~But please help, and say which one goes to which blank. Thank you. :)

Answers

One hundredth the product of 17 and 24 is 1.7*2.4
17*24=408, and 408 divided by 100 is 4.08   1.7*2.4 also equals 4.08
One-tenth of 24 is 408÷170
24 divided by 10 is 2.4   408÷170 is also 2.4
One hundred times 24 is 408÷0.17
24*100=2400   408/0.17 is also 2400 (Double check: 2400*0.17=408)

What is 62.4 as a fraction and simplified?

Answers

Answer:

62 2/5

Step-by-step explanation:

62 is just the whole number and then you have 4 tenths, which is 4/10 which can be simplified to 2/5, so it's 62 2/5

Rewrite the fraction using the least common denominator

4/9 7/15

Answers

Answer:

20/45 & 21/45

Step-by-step explanation:

Find a common denominator. What you do to the denominator, you do to the numerator. In this case, the smallest denominator is 45.

(4/9)(5/5) = 20/45

(7/15)(3/3) = 21/45

The two fractions you have is:

20/45 for 4/9

21/45 for 7/15

~

Answer:

20/45 for 4/9  and 21/45 for 7/15

Step-by-step explanation:

The least common denominator of 4/9 is 20/45.

The least common denominator of 7/15 is 21/45.
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