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2 years ago

Pls help number 1 - 4

Mathematics

2 answers:

Hunter-Best [27]2 years ago

5 0

Answer:

1) Median: 34 Mean: 36 Range: 31-41 Mode: 41

2) Median: 10 Mean: 16 Range: 8-35 Mode: 10

3) Median: 14 Mode: 14 Range: 7-29 Mean: 13.6

4) Median: 41 Mode: 41 Range: 16-82 Mean: 42

Step-by-step explanation:

Median-number in middle (when they are arranged least to greatest)

Mode-number repeated the most times (can be multiple)

Range-beginning number and the largest number

Mean-all of the numbers added together divided by how many there are

Hope this helps!

Vlad [161]2 years ago

3 0

Answer:

Mean = average. Add up all the numbers, divide it by the number of numbers and there you go.

Median is the middlest number, For example 11, 12, 13, 14, 15. The median would be 13.

Mode is the most often number. For example 11, 11, 12, 13, 14, 14, 14, 15. The answer would be 14.

range is subtracting the lowest number from the highest number. For example, 11, 12, 13, 14, 15. The answer would be 4.

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3 cups of flour is 1 1/2 teaspoon of vanilla how many vanilla is there if there’s 5 cups of flour

ch4aika [34]

Answer:

2 1/2

Step-by-step explanation: So you have to see how much teaspoons of vanilla is in one cup of flour then multiply by 5

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2 years ago

4(x+1) - 7 = 3(x-1) + x

alisha [4.7K]

Answer:

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3 years ago

A fashion designer makes and sells hats. The material for each hat cost $5.50. The Hats sell for $12.50 each. The designer spend

labwork [276]

The designer must sell 200 hats for breaking even.

Step-by-step explanation:

Given,

Cost for material for each hat = $5.50

Selling price of each hat = $12.50

Cost spend on advertising = $1400

Let,

x represents the number of hats.

Revenue = 12.50x

Costs = 5.50x+1400

For breaking even,

Revenue = Cost

$12.50x=5.50x+1400\\12.50x-5.50x=1400\\7x=1400$

Dividing both sides by 7

$\frac{7x}{7}=\frac{1400}{7}\\x=200$

The designer must sell 200 hats for breaking even.

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7 0

3 years ago

In rectangle ABCD, AC = -x + 21, BP = -9x + 19, and DP = -y + 5. Find the value of y.

creativ13 [48]

Answer:

y=-5

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The diagonals of a rectangle are equal and bisect each other

$BP=\frac{1}{2}AC$

$DP=BP$

step 1

Find the value of x

$BP=\frac{1}{2}AC$

substitute the given values

$(-9x+19)=\frac{1}{2} (-x+21)$

solve for x

Multiply by 2 both sides

$-18x+38=-x+21$

$18x-x=38-21\\17x=17\\x=1$

step 2

Find the value of y

$DP=BP$

we have

$BP=-9x+19$

$DP=-y+5$

substitute

$-y+5=-9x+19$

substitute the value of x

$-y+5=-9(1)+19\\-y+5=10\\y=5-10\\y=-5$

5 0

3 years ago

Population A and Population B both have a mean height of 70.0 inches with an SD of 6.0. A random sample of 50 people is picked f

Alex

Answer:

Sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

Step-by-step explanation:

To yield a more accurate estimate of the population mean, margin of error should be minimized.

margin of error (ME) of the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic in the given confidence level(z-score or t-score)

s is the standard deviation of the sample (or of the population if it is known)

N is the sample size

for a given confidence level, and the same standard deviation, as the sample size increases, margin of error decreases.

Thus, random sample of 50 people from population A, has smaller margin of error than the sample of 20 people from population B.

Therefore, sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

7 0

3 years ago