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Hoochie [10]
3 years ago
13

I need math help ASAP

Mathematics
1 answer:
iVinArrow [24]3 years ago
7 0

Shape 1:

Perimeter of 1/2 circle

= 1/2 (3.14)(8)

= 12.56 cm

Shape 2:

Perimeter of square

= 4 x 16

= 64 cm

Total perimeter:

=  12.56 cm + 64 cm

= 76.56 cm

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Is 7,849 a reasonable answer for 49 x 49?
melisa1 [442]

Answer:

2,401

Step-by-step explanation:

No because 49x49 is 2,401

8 0
3 years ago
The mean caloric intake of an adult male is 2800 with a standard deviation of 115. To verify this information, a sample of 25 me
erma4kov [3.2K]

Answer:

Step-by-step explanation:

We would use the t- distribution.

From the information given,

Mean, μ = 2950

Standard deviation, σ = 115

number of sample, n = 25

Degree of freedom, (df) = 25 - 1 = 24

Alpha level,α = (1 - confidence level)/2

α = (1 - 0.98)/2 = 0.01

We will look at the t distribution table for values corresponding to (df) = 24 and α = 0.01

The corresponding z score is 2.492

We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

It becomes

2950 ± 2.492 × 115/√25

= 2950 ± 2.492 × 23

= 2950 ± 57.316

The lower end of the confidence interval is 2950 - 57.316 =2892.68

The upper end of the confidence interval is 2950 + 57.316 = 3007.32

The solution is correct.

8 0
3 years ago
Mary had $156.00 and spent 1/6 of it for a coat. She then bought a skirt with 1/4 the money she had left. How much money did she
marusya05 [52]

Answer: $ 97.5

Step-by-step explanation:

156 * 1/6 = 26

156-26=130

130 * 1/4- 32.5

130-32.4= 97.5

3 0
2 years ago
How to solve problem in the document
jeyben [28]
I’ve attached a photo, with the instructions. Hope it helps. If you have any questions don’t hesitate to ask

5 0
2 years ago
What is the mean absolute deviation of the data set
Ludmilka [50]

Answer:

Mean absolute deviation. The mean absolute deviation of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset

Step-by-step explanation:

Hope this helps

7 0
3 years ago
Read 2 more answers
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