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2 years ago

Polygons ! ( picture included)

Mathematics

2 answers:

mariarad [96]2 years ago

8 0

Answer:

Step-by-step explanation:

2x+x=180

3x=180

x=60

2x=120

so B

hope that helps if it does please mark mine as brainliest.

tresset_1 [31]2 years ago

5 0

Answer:

The answer would be B

Step-by-step explanation:

Hope this helps

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A bank loans $2100 to a business at 7% for 3 months. How much simple interest will the bank earn?

Natali [406]

Answer:

$36.75

Step-by-step explanation:

The amount of interest payable is given by ...

I = Prt = $2100·0.07·(3/12) . . . . . . . . t is in years

I = $36.75

The bank earned $36.75 on the loan.

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2 years ago

g On any day, the probability of rain is 0.3. The occurrence of rain on any day is independent of the occurrence of rain on any

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Answer:

0.249579

Step-by-step explanation:

P(rain) = 0.3

P(no rain) = 1 - 0.3 = 0.7

The event of rain falling a second time within the next 5 days is possible in these ways

1. Rain on days 1 and 2

2. Rain on days 1 and 3; none on day 2

3. Rain on days 1 and 4; none on days 2 and 3

4. Rain on days 1 and 5; none on days 2, 3 and 4

5. Rain on days 1 and 6; none on day 2, 3, 4 and 5

$P(\text{second rain within 5 days}) = 0.3^2+0.3^2\times0.7+0.3^2\times0.7^2+0.3^2\times0.7^3+0.3^2\times0.7^4 = 0.3^2(1+0.7+0.7^2+0.7^3+0.7^4)= 0.09\times2.7731=0.249579$

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3 years ago

Solve for a 2.5+5a=3a+10.5

Oksi-84 [34.3K]

Answer:

a = 4

Step-by-step explanation:

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2 years ago

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The scheduled arrival time for a daily flight from Boston to New York is 9:30 am. Historical data show that the arrival time fol

Galina-37 [17]

Answer:

Step-by-step explanation:

Let x be a random variable representing the flight arrival time from Boston to New York.

For a uniform probability distribution, the notation is

X U(a, b) where a is the lowest value of x and b is the lowest value of x

The probability density function, f(x) = 1/(b - a)

Mean, µ = (a + b)/2

Standard deviation, σ = √(b - a)²/12

From the information given, the time difference in minutes is 9:57 - 9:07 = 50 minutes. Therefore,

a = 0

b = 50

µ = (0 + 50)/2 = 25

σ = √(50 - 0)²/12 = 14.43

b) converting to minutes, it is 9:30 - 9:07 = 23 minutes

the probability that a flight arrives late(later than 9:30 am) is expressed as P(x > 23)

f(x) = 1/(50) = 0.02

P(x > 23) = (50 - 23)0.02 = 0.54

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2 years ago

The polynomial −2x3 − x2 + 13x in the last line is the result of

Marina86 [1]

Subtracting 3x^4+9x^3+3x^2 from the divided and bringing down 13x.

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3 years ago

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