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Crank
3 years ago
6

What is the area of the regular octagon shown below?

Mathematics
2 answers:
Greeley [361]3 years ago
8 0

Answer:

C

Step-by-step explanation:

Alexus [3.1K]3 years ago
3 0

Answer:

b

Step-by-step explanation:

b

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A car is traveling at a steady speed. It travels 1 3/4 miles in 2 1/3 minutes. How far will it travel in 47 minutes? In 1 hour?
aleksandrvk [35]

Answer:

  • Distance in 47 minutes = 0.75 × 47 = 35.25 miles
  • Distance in 1 hour or (60 minutes) = 0.75 × 60 = 45 miles

Step-by-step explanation:

Given that the car is traveling at a steady speed.

Distance traveled in 2 1/3 or 7/3 or (2.33) minutes = 1 3/4 miles

                                                                                 = 7/4 or 1.75 miles

Thus,

distance in 1 minute:  1.75/2.33 = 0.75 miles per minute

Thus,

  • Distance in 47 minutes = 0.75 × 47 = 35.25 miles
  • Distance in 1 hour or (60 minutes) = 0.75 × 60 = 45 miles
7 0
3 years ago
What is the initial velocity of the boiling water? H=-16t^2+170t
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5 0
3 years ago
4. Is rap music more popular among young Indians than among young Asians? A sample survey compared 634 randomly chosen Indians a
bulgar [2K]

Answer:

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.

Step-by-step explanation:

Given  a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

p_{1} = \frac{368}{634} =0.580

It found that 368 of the Indians and 130 Asians listened to rap music every day.

p_{2} = \frac{130}{567} =0.229

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

p_{1} = p_{2}

Alternative hypothesis:- p_{1} \neq  p_{2}

Level of significance α = 0.05

The test of statistic

z = \frac{p_{1} -  p_{2}}{\sqrt{pq(\frac{1}{n_{1} }+\frac{1}{n_{2} })  } } }

where p = \frac{n_{1}p_{1} + n_{1}p_{2}}{n_{1}+n_{2}} = \frac{634(0.580)+567(0.229)}{634+567}

       p = 0.414

and q = 1-p = 1- 0.414 =0.586

Z = \frac{0.580-0.229}{\sqrt{0.414(0.586)(\frac{1}{634} +\frac{1}{567} } } }

on calculation , we get

z = 0.300 ><1.96 at 95 % level of significance

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

3 0
3 years ago
From the ground, a hot-air balloon went up at a speed of 375 feet per minute for 5 minutes. It then went down at a speed of 225
NISA [10]
525 feet is your answer
6 0
3 years ago
Read 2 more answers
When dividing 878 by 31 a student finds a quotient of 28 with a remainder of 11 check the students work and use the check to fin
sveticcg [70]
878 ÷ 31 = 28 with a remainder of 10
7 0
3 years ago
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