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3 years ago

The measure of each exterior angle of a regular polygon is 18. find the number of sides in the polygon

1 answer:

3 0

The sum of all exterior angles for every shape is 360 so just divide 360 by the measurement of one exterior angle (18) to get 20

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sarah recives an inheritance of 180000.she decided to invest this for the next five years as part of her saving plan for a housi

anastassius [24]

Answer: 10350

Step-by-step explanation:

Amount invested = Principal = 180,000

Interest rate = 5.75%

Time = 1 year

The interest that is earned at the end of the first year will be:

= PRT

= 180,000 × 5.75% × 1

= 180,000 × 0.0575 × 1

= 10350

8 0

3 years ago

It takes a jet 2 hours to fly 1,100 miles. At this rate, how far does it fly in 8 hours?

Anuta_ua [19.1K]

Answer:

4400 miles

Step-by-step explanation:

In 1 hour it can fly 1100/2 = 550 miles

Multiply that by 8 to find how far it can fly in 8 hours

8 *550 =4400 miles

5 0

3 years ago

Read 2 more answers

Need help with the second one

BaLLatris [955]

Answer:

B for both

Step-by-step explanation:

hope this helps :D ^^

8 0

2 years ago

In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a stand

Ann [662]

Answer: A: 0.0031

Step-by-step explanation:

Given : In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a standard deviation of 5.2 minutes.

i.e. $\mu=17.4$ and $\sigma=5.2$

We assume that the wait times are normally distributed.

samples size : n= 30

Let x denotes the sample mean wait time.

Then, the probability that the mean wait time is greater than 20 minutes will be :

$P(x>20)=1-P(x\leq20)\\\\=1-P(\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\leq\dfrac{20-17.4}{\dfrac{5.2}{\sqrt{30}}})\\\\=1-P(z\leq2.74)\ \ [\because\ z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=1-0.9969\ \ [\text{ By z table}]\\\\=0.0031$

Hence, the probability that the mean wait time is greater than 20 minutes.= 0.0031

Thus , the correct answer is A: 0.0031 .

5 0

3 years ago

Find the missing angle measures <br><br><br> Helppp por favor!!

madam [21]

Angle: 180-132 = 48
180-48= 132
132/6=22

2(22)= 44
4(22)= 88

44+88+32 = 180

Answer:
Measure of angle < CBA = 88

Measure of angle < BCA = 44

6 0

3 years ago