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3 years ago

How many sides does the polygon have ?

Mathematics

1 answer:

Lilit [14]3 years ago

6 0

Answer: The answer is 20

Step-by-step explanation: If all interior angles are 162o , polygon has 20 sides.

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Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

4 0

3 years ago

Floats in a parade travel down the 5.5 mile long street at a rate of 2.5 miles per hour. How long will it take the floats to com

Rina8888 [55]

It should take 2.2 hours, since 5.5 / 2.5 = 2.2.

6 0

3 years ago

Can someone help me solve this.

Amanda [17]

Answer:

equilateral: E

scalene: F

isosceles: G

Step-by-step explanation:

equilateral = all sides are equal

scalene = no sides are equal

isosceles = two sides are equal

4 0

3 years ago

An object at a temperature of 35 °F was put in an industrial freezer. The temperature of the object changed by y °F. The tempera

galina1969 [7]

Answer:

D. An inequality models the situation better, because y could be a range of values extending into the negative direction on the number line.

Step-by-step explanation:

5 0

3 years ago

Two less than the product of 9 and a number is equal to 4.

Llana [10]

Answer:

See, that doesn't make sense.

First of all, 4 is the only number equal to 4. Sp, it'd be 9+4 = 13

Then I'm assuming you're also subtracting 4 from 13, so the answer would be 9.

Hope this helped, have a nice day.

7 0

3 years ago