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DENIUS [597]
3 years ago
5

Plz help I'm stuck ;) ;) ;)

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0
4/5+3/5= 1 2/5.

7/8-5/8= 1 1/2
EastWind [94]3 years ago
3 0
Oh that's easy,the answer is [email protected]/5
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Find the area of a sector with a central angle of 2pi/15 and a radius of 18.8 m
jolli1 [7]
We know that
[Area of a circumference]=pi*r²
for r=18.8 m
Area=pi*18.8²=1109.80 m²

if the area for 2pi radians (full circumference) is --------------> 1109.80 m²
                  for 2pi/15----------------------------------> X
X=(2pi/15)*1109.80/2pi----------> 73.99 

the answer is 73.99 m²

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4 years ago
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What is the slope of a line with rise and run of 4?
BaLLatris [955]
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3 years ago
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5 0
3 years ago
For a certain population of sea turtles, 18 percent are longer than 6.5 feet. A random sample of 90 sea turtles will be selected
nika2105 [10]

Answer:

The standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90 is of 0.0405

Step-by-step explanation:

Central Limit Theorem:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

18 percent are longer than 6.5 feet.

This means that p = 0.18

A random sample of 90 sea turtles

This means that n = 90

What is the standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90

s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.18*0.82}{90}} = 0.0405

The standard deviation of the sampling distribution of the sample proportion of sea turtles longer than 6.5 feet for samples of size 90 is of 0.0405

8 0
3 years ago
Ms. Grant’s car gets between 20 and 22 miles per gallon, inclusive. The gasoline she uses costs between $4.20 and $4.50 per gall
maria [59]

Answer:

You need to be more clearer with the money amount not like 4.20 - 4.50

Step-by-step explanation:

7 0
3 years ago
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