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Mathematics

2 answers:

Kazeer [188]1 year ago

6 0

Answer + Explanation:

5 Cupcakes = $7.5.
How: First you see that 1 cupcake is $1.50. Multiply 5 by 1.50 and you get 7.50

18 Dollars = 12 Cupcakes
How: First you see that 1 cupcake is $1.50. Multiply 1.50 by numbers until you see 18.

18 Cupcakes = $27
How: First you see that 1 cupcake is $1.50. Multiply 18 by 1.50 and you get 27.

I Hope This Helped :D

Sergio039 [100]1 year ago

3 0

Answer:

1: $7.5

2:12 cupcakes

3:$27

Step-by-step explanation:

Since each cupcake is worth $1.50 you multiply that by the amount of cupcakes you have. To find the amount of cupcakes if you have the price you would divide it by the price for one.

5×1.5 =7.5

18÷ 1.5=12

18×1.5=27

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A dog breeder would like to know how many Dalmatian puppies are typically born in a litter. He conducts some research and select

podryga [215]

Answer:

c. 6.2 ± 2.626(0.21)

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 101 - 1 = 100

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 100 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.626