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Oksanka [162]
3 years ago
5

Carly missed 22.5% of the questions on

Mathematics
1 answer:
MatroZZZ [7]3 years ago
7 0

Answer:

40 questions

correct \: questions = (100 - 22.5)\% \\  = 77.5\% \\ let \: total \: questions \: be \: x \\  =  > 77.5\% \times x = 31 \\  \frac{77.5}{100}  \times x = 31 \\ 77.5x = 3100 \\ x = 40 \\  = 40 \: questions

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Jill jogs 3/4 of a mile in 1/10 of an hour at this rate how fast does she run one mile.
ikadub [295]

Answer:

<u>8 minutes</u>

Step-by-step explanation:

Jill jogs 3/4 of a mile in 1/10 hour.

⇒ 3/4 of a mile takes <u>6 minutes</u>

<u />

For one mile :

  • 3/4 mile x 4/3 : 6 x 4/3 minutes
  • 1 mile : 2 x 4 minutes
  • 1 mile takes <u>8 minutes</u>
3 0
2 years ago
Read 2 more answers
Rachel's gym charges a one-time registration fee of $45 and a monthly fee of $39. Which
Leto [7]

Answer: Its 39x + 45

Step-by-step explanation:

yes

4 0
3 years ago
Solve for variable its in pre algebra
Natalka [10]

Answer:

7

Step-by-step explanation:

7

7 0
3 years ago
A soccer stadium had a capacity of 25000 seats, but with the new area built this increased by 20%.
sergij07 [2.7K]

Answer:

19,500 people

Step-by-step explanation:

20% of 25,000 is 5,000.

Add 5,000 to 25,000 - this will give you 30,000. That is a 20% increase.

65% of 30,000 is 19,500, thus there are 19,500 people in the stadium.

8 0
2 years ago
The diagram shows a plan for the rectangular house with an attached porch. The combined area of the house and the porch is 733ft
Nikolay [14]

The value of x in the diagram is 8 feet that makes the combined area of the house and the porch to be 733 ft²

<h3>How to calculate area?</h3>

Combined area = big rectangle + smaller rectangle - triangle

Hence:

733 = (13 * (59 - x)) + (x * 9) - 0.5(9 - 7) * (x - 6)

733 = 767 - 13x + 9x - x + 6

x = 8 feet

The value of x in the diagram is 8 feet that makes the combined area of the house and the porch to be 733 ft²

Find out more on area at: brainly.com/question/25292087

8 0
3 years ago
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