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3 years ago

7

Jeremy is 5 years younger than his older sister. His older sister is 9 years older than his younger sister. The total of their a

ges is 49. Write and solve an equation to find the ages of Jeremy and his sisters.

1 answer:

guapka [62]3 years ago

7 0

Jeremy's youngest sister is 12 Jeremy's older sister is 21 and Jeremy is 16.

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A political scientist wants to know how college students feel about the Social Security system. She obtains a list of the 3456 u

Marina CMI [18]

Answer:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

Step-by-step explanation:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

For this case we can also find the non reponse rate since we know that the total of questionnaires are 250 and she got back just 104 answered

$Non-resp. = \frac{250-104}{250} = \frac{146}{250}= 0.584$

So we have a non response rate of 58.4 %

4 0

3 years ago

How many yards are in 3 times of 4 yards 2 foot

Len [333]

4 yards and 2 feet is equal 14 feet since each yard is made up of 3 feet.

1 yard = 3 feet.

So if we take 14 feet and multiply that by 3 we get 42 feet.

42/3 is equal to about 14 yards in total

So the answer is 14 yards.

6 0

2 years ago

A. Steven wrote an expression with 2 terms. The second term, which is the whole number 7, is subtracted from the first term. The

bulgar [2K]

Answer:

Part a)

Steve's expression is $2(2x+5)^{2}-7$

For x=3, the expression is equal to $235$

Part b)

Jasmine's expression is

$(3x^{2})+(25x)$

For x=2, the expression is equal to $62$

Step-by-step explanation:

Part a)

Let

n-----> the first term

The expression is

$(n-7)$

$n=2(2x+5)^{2}$

substitute

Steve's expression is

$2(2x+5)^{2}-7$

Evaluate for x=3

$2(2(3)+5)^{2}-7=242-7=235$

Part b)

Let

n-----> the first term

Jasmine's expression is

$(3x^{2})+(25x)$

Evaluate for x=2

$(3(2)^{2})+(25(2))=12+50=62$

4 0

2 years ago

Find b given that p(b,2) is equidistant from a(5,4) and b(2,5)

Oksana_A [137]

Hello :
PA = PB or PA² = PB²
(5-b)²+(4-2)² = (2-b)² + (5-2)²
(5-b)²+4 = (2-b)² + 9
25 -10b +b² + 4 = 4 -4b+b² +9
-6b = -16
b = 8/3

5 0

3 years ago

Please help me with this! Anything will be appreciated!! :)

kumpel [21]

The formula for volume is Length x Width x Height.

So when you apply this formula to these questions the answers should be:

#7. 3x4x2 = 24

#8. 2x4x1 = 8

#9. 3x4x2 = 24

#10. 4x3x1 = 12

I hope this helps!

5 0

2 years ago