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4 years ago

Which regular polygon would have each of its interior angles measure 120°? hexagon heptagon octagon nonagon?

1 answer:

3 0

Sum of angles of regular polygon = 180*(n-2), n - number of sides, or angles.

120n=180*(n-2)

120n=180n-360
180n-120n=360
60n =360
n=6

It is hexagon.

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1.4x+1.1=8.3-x Explain your answer

IgorLugansk [536]

Answer:

x=3

Step-by-step explanation:

1.4x+1.1=8.3-x

1.4x+x=8.3-1.1

2.4x=7.2

x=7.2/2.4

x=3

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3 years ago

Kenny bought a new car stereo that cost $220, but he had a coupon for a 14% discount. How much did Kenny pay for the car stereo.

jok3333 [9.3K]

Answer:

189,2$

Step-by-step explanation:

220*0,86=189,2

14% = 14/100 = 0,14

1-0,14 = 0,86

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7 0

3 years ago

Read 2 more answers

Write the first five terms of the sequence defined by the explicit formula.

AlexFokin [52]

Answer:

(a) 112, 28, 7, (7/4), (7/16)

Step-by-step explanation:

The sequence is given by the explicit formula

$a_{n} = 112 (\frac{1}{4} )^{n-1}$

The terms of the sequence are :

$a_{1} = 112 (\frac{1}{4} )^{1-1} = 112 (\frac{1}{4} )^{0} =112$

$a_{2} = 112 (\frac{1}{4} )^{2-1} = 112(\frac{1}{4} ) =28$

$a_{3} = 112 (\frac{1}{4} )^{3-1} = 112(\frac{1}{4} )^{2} = 7$

$a_{4} = 112 (\frac{1}{4} )^{4-1}=112(\frac{1}{4} )^{3} = \frac{7}{4}$

$a_{5} = 112 (\frac{1}{4} )^{5-1}=112 (\frac{1}{4} )^{4} = \frac{7}{16}$

6 0

3 years ago

Which of the following statements have the same result? Explain each step in solving each one.

Tatiana [17]

Answer:

I don't think that there is two same results. sorry I couldn't help

Step-by-step explanation:

for I the answer should be 10 if you replaced each x by 2. f(2) = 3(2) + 4

and for II it will be f-1(4) = 3-1(4) - 4 /5 the answer will be -1.

for III it should be y = 8 or 4

3 0

3 years ago

What’s -3+4(-2) 4-2(-5) (-7+3)(4-5x2)

White raven [17]

Answer:

1. -2

2. -10

3. -8

Step-by-step explanation:

1. you add 4 to -3 which is equal to one then you multiply 1 by -2 which is -2

2. 4-2=2 then 2(-5) is equal to -10

3. -7+3=-4 and 4-5 is equal to -1 then you multiply that by 2 which is equal to -2

6 0

3 years ago