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igomit [66]
2 years ago
5

Eight male and eight female college students who have credit cards were surveyed and asked their total credit card debt. The res

ponses are given below in dollars: Males 1000 2100 900 1200 1300 500 1400 700 Females 1300 500 2000 1800 1300 1000 2600 1400
Is this an observational study or a designed experiment?
Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:

Observational study.

Step-by-step explanation:

In an observational study, the data is calculated but there are no experiments to change anything.

In a designed experiment, an experiment is applied to a group of people and it's effects are studied.

In this problem, we have that:

Male and female college students give their total credit card debt. There are no experiments to change anything. So it is an observational study.

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The cylinder shown has a lateral surface area of about 80 square inches. Which answer is closest to the height of the cylinder?
Radda [10]

Hello!

The cylinder shown has a lateral surface area of about 80 square inches. Which answer is closest to the height of the cylinder? Use 3.14 to approximate pi.

We have the following data:

Al (lateral surface area) = 80 in²

R (ratio) = 4 in

h (height) = ? (in inches)

Adopt : π ≈ 3.14

We apply the data to the formula, we have:

A_l = 2*\pi*R*h

80 = 2*3.14*4*h

80 = 25.12\:h

25.12\:h = 80

h = \dfrac{80}{25.12}

h = 3.18 \to \boxed{\boxed{h \approx 3.2\:in}}\:\:\:\:\:\:\bf\green{\checkmark}

Answer:

≈ 3.2 inches

________________________

\bf\green{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

8 0
3 years ago
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If 25 metres of cloth costs Rs. 337. 50 , then the length of the cloth bought for Rs. 810 is​
bonufazy [111]

Answer:

19

Step-by-step explanation:

because it not it

5 0
2 years ago
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7. Diane flew home from vacation with a heavy bag. With the first airline she 1 point
Otrada [13]

Answer:

80

Step-by-step explanation:

5 0
2 years ago
Drag and drop the number to match the division problem to its quotient.
enyata [817]

C I'm using the calculator and the other ones don't make sense

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Brockman Corporation's earnings per share were $3.50 last year, and its growth rate during the prior 5 years was 7.0% per year.
fredd [130]

Answer:

The number of years it would take is  n  =  2 \ years

Step-by-step explanation:

From the question we are told that

         The earning per share  is  P = $3.50

          The growth rate is  r  =  7.0%

           The duration is t =  5 \ years

Generally the future value is mathematically represented as

          A =  P(1 + \frac{r}{100} )^n

 Where P is the present value

              n is the time period

         A is the future value which is mathematically evaluated as

               A =  3 * P

substituting value

            A =  3 * 3.50

            A = $ 10.5 0

So

      A =  P(1 + \frac{r}{100} )^n

       10.5 =  3.5(1 + \frac{7}{100} )^n

       10.5 = 3.225^n

Taking log of both sides

       log 10.5 = nlog 3.225

        1.0212 = n(0.5085)

         n  =   \frac{1.0212}{(0.5085)}

         n  =  2 \ years

     

4 0
3 years ago
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