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Rzqust [24]
4 years ago
6

How many teenagers should be in the sample

Mathematics
1 answer:
valentinak56 [21]4 years ago
4 0

Answer:

THEREFORE

Step-by-step explanation:

THERE SHOULD BE 7 TEENAGERS IN THE SAMPLE.

HOPE, THIS MAY HELP YOU BRO!!..

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PLEASE HELP ME OUT WITH THIS: *13 POINTS*
almond37 [142]

Answer:

Step-by-step explanation:

B

6 0
3 years ago
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Alex bought a new truck for $42,935. According to the dealer, the truck will depreciate approximately $4,200 per year. Write and
Andrews [41]

Answer:

The truck is worth $5,135 when 9 years have passed

Step-by-step explanation:

Initial value of Alex's new truck: $42,935

Loss of value per year: $4,200

If n years passed, the truck would have lost

4,200n\ dollars

The current value of the truck will be

V(n)=42,935-4,200n

We want to know the value of n at which V is 5,135

5,135=42,935-4,200n

Solving for n

n=\frac{42,935-5,135}{4,200}

n=9 years

8 0
4 years ago
Solve for x: -9 = 2x - 5 help plsss
Degger [83]

Answer:

x = -2

Step-by-step explanation:

8 0
3 years ago
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Noah wants to buy a skateboard that usually sells for $79.99. All merchandise is discounted by 12%. What is the total cost of th
beks73 [17]

Answer:

$74.36 sorry all i got

Step-by-step explanation:

First, we need to determine the sales price of the skateboard. The formula for find the discounted prices is:

Where:

is the sales price of the item: what we are solving for in this part of the problem.

is the regular price of the item: $79.16 for this problem.

is the discount rate: 12% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 12% can be written as  

12

100

Substituting and calculating  

gives

79.16

79.16

12

100

79.16

949.92

100

79.16

9.4992

69.6608

69.66

rounded to the nearest cent.

Now we can find the total price of the item with tax included. The formula for this is

#t = p + (p * r)

Where, this time:

is the total price: what we are solving for in this problem.

is the price of the item: it is the sales price of the item for this problem which is $69.66

is the tax rate: 6.75% or, using the same rule as in the formula above:  

6.75

100

Substituting and calculating  

gives:

69.66

69.66

6.75

100

69.66

470.205

100

69.66

4.70205

74.36205

74.36

rounded to the nearest cent.

Noah would pay a total cost (with the discount and after tax) of $74.36

5 0
3 years ago
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At a large university, the probability that a student takes calculus and statistics in the same semester is 0.02. The probabilit
Nina [5.8K]

Answer:

The probability that a student is taking calculus given that he or she is taking statistics is = 0.26

Step-by-step explanation:

the probability that a student is taking calculus given that he or she is taking statistics.

Let C = Calculus

S = Statistics

We solve this above Question nursing the formula;

P ( C ∪ S) = P(C) + P ( S ) - P ( C ∩ S)

From the question,

P(C) = 0.10

P( S ) = 0.18

P ( C ∩ S) = 0.02

P ( C ∪ S) = ???

P ( C ∪ S) = 0.10 + 0.18 - 0.02

= 0.28 - 0.02

= 0.26

8 0
4 years ago
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