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Anvisha [2.4K]
3 years ago
14

Ms.diaz wants to to divide her class of 30 students into 10 groups. The groups do not need to be equal size. What are some of he

r choices?
Mathematics
2 answers:
Alja [10]3 years ago
7 0
10 and 3 since that equals 30.
astra-53 [7]3 years ago
5 0

10 groups of 3

5 groups of 4 and 5 groups of 2

7 groups of 3 and 3 groups of 3

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The sum of 3 times the value of x and 2 is equal to 4 less than 5 times the value x. Which equation can be used to find the valu
Komok [63]

Answer:

Write the written problem into an equation to get:

3x +2 = 5x -4

To solve:

Add 4 to each side:

3x+6 = 5x

Subtract 3x from each side:

2x = 6

Divide both sides by 2:

x = 6/2

x = 3

Step-by-step explanation:

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2 years ago
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Answer:

The median is 20.5

the average is 21

Step-by-step explanation:

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3 years ago
An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the
lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = \sigma = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for  0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

z=\frac{x-u}{\sigma}

For z = -1.56, we get:

-1.56=\frac{x-74.2}{9.6}\\\\ x = 59

For z = -0.88, we get:

-0.88=\frac{x-74.2}{9.6}\\\\ x = 66

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

7 0
3 years ago
500
statuscvo [17]

Answer: The required ratio would be 3 miles : 4 minutes.

Step-by-step explanation:

Since we have given that

Speed of a cheetah = 45 miles per hour

So, it means

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So, the ratio of the distance it travels to the time it takes would be

Distance : Time

45\ miles:60\ minutes\\\\=3\ miles :4\ minutes

Hence, the required ratio would be 3 miles : 4 minutes.

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3 years ago
Find the measure of the indicated angle. Round to the nearest tenth of a<br> degree.
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I’m pretty sure it’s A
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