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Fed [463]
3 years ago
6

50% of the 6th grade students at Snowflake Middle school spent part of their winter break visiting their grandparents. If 243 st

udents visited their grandparents, how many students are in the 6th grade class?
Mathematics
1 answer:
VMariaS [17]3 years ago
4 0
Numerous information’s of immense importance is already provided in the question. Based on them the answer to the question can be easily deduced.
Total number of students that visited their grandparents = 243
Percentage of 6th grade students that visited their grandparents = 50%
Let us assume the number of students = x
50x/100 = 243
x/2 = 243
x = 243 * 2
  = 486
<span>So the total number of students in Grade 6 of Snowflake school was 486.</span>


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Elden [556K]

Answer:

C

Step-by-step explanation:

-4+9=5

6 0
4 years ago
Sara takes 5 tests.
kkurt [141]

Sara's score in the sixth test is 98.

<h3>HOW TO CALCULATE TOTAL FROM MEAN?</h3>

The mean of a set of data can be calculated by dividing the total sum by the number of data given.

According to this question, Sara is said to have a mean score of 62 in 5 tests and another mean score of 68 in 6 tests.

  • First total score = 62 × 5 = 310
  • Second total score = 68 × 6 = 408

Therefore, Sara's score in the sixth test can be calculated by subtracting 310 from 408 to give 98.

Learn more about mean at: brainly.com/question/521501

6 0
3 years ago
Pool #1 is a rectangle that is 14 feet wide. The length is (14– 8)2ft.
kap26 [50]

Answer: the length is 6 feet. The width is 2 feet

Step-by-step explanation:

The garden pool is rectangular in shape.

Let L represent the length of the rectangular garden.

Let W represent the width of the rectangular garden.

The area of a rectangle is expressed as L× W. The area of the rectangular garden pond is 12ft^2. It means that

L× W = 12 - - - - - - - - - - 1

The length of the pool needs to be 2ft more than twice that width. This means that

L = 2W + 2 - - - - - - - - - - - 2

Substituting equation 2 into equation 1, it becomes

W(2W + 2) = 12

2W^2 + 2W = 12

2W^2 + 2W - 12 = 0

W^2 + W - 6 = 0

W^2 + 3W - 2W - 6 = 0

W(W + 3) - 2(W + 3) = 0

W - 2 = 0 or W + 3 = 0

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Since the Width cannot be negative, then the width is 2 feet

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8 0
3 years ago
. The daily sales at a convenience store produce a distribution that is approximately normal with a mean of 1220 and a standard
rewona [7]

Answer:

0.78015

Step-by-step explanation:

Given that :

Mean, μ = 1220

Standard deviation, σ = 110

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P(x < 1305) :

Obtain the standardized score Z

Z = (x - μ) / σ

Z = (1305 - 1220) / 110

Z = 85 / 110

Z = 0.7727272 = 0.7727

P(Z < 0.7727) = 0.78015 (Z probability calculator)

6 0
3 years ago
The Johnson family drove 52 miles on 4 gallons of gasoline. Which of the following equations can be used to find how far they ca
djverab [1.8K]

Answer:

y = 13x

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Now that we know how many miles per gallon, let's make an equation to find how much they can travel on a full tank of 15 gallons.

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Now let's see how much they can travel in 15 gallons.

y = 13x

y = 13(15)

y = 195 miles

So the Johnson family can drive 195 miles on a full tank of 15 gallons of gasoline.

3 0
4 years ago
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