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3 years ago

Find the measure of an exterior angle of a regular polygon with 18 sides.

Mathematics

1 answer:

Elenna [48]3 years ago

8 0

Answer:

compute its exterior angle as 360/18, which is 20 degrees

Step-by-step explanation:

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A certain control heating process requires that the temperature be raised from − 23 ∘ C at the rate of 4 ∘ C every hour . Find t

Harrizon [31]

Answer:

Temperature after 12 hours = 25°C

Step-by-step explanation:

Given:

Current tempreture = -23°C

Tempreture incresing rate = 4°C per hour

Total time = 12 hour

Find:

Temperature after 12 hours

Computation:

Temperature after 12 hours = Current tempreture + (Tempreture incresing rate)(Total time)

Temperature after 12 hours = -23 + (4)(12)

Temperature after 12 hours = -23 + 48

Temperature after 12 hours = 25°C

5 0

3 years ago

What is the formula to find a simple interest rate

Sphinxa [80]

Simple interest formula: A = P(1 + rt) where P is the Principal amount of money to be invested at an Interest Rate R% per period for t Number of Time Periods. Where r is in decimal form; r=R/100; r and t are in the same units of time.

4 0

3 years ago

A college football coach has decided to recruit only the heaviest 15% of high school football players. He knows that high school

Alla [95]

Answer:

The coach should start recruiting players with weight 269.55 pounds or more.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 225 pounds

Standard Deviation, σ = 43 pounds

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.15

$P( X > x) = P( z > \displaystyle\frac{x - 225}{43})=0.15$

$= 1 -P( z \leq \displaystyle\frac{x - 225}{43})=0.15$

$=P( z \leq \displaystyle\frac{x - 225}{43})=0.85$

Calculation the value from standard normal z table, we have,

$P(z < 1.036) = 0.85$

$\displaystyle\frac{x - 225}{43} = 1.036\\\\x = 269.548 \approx 269.55$

Thus, the coach should start recruiting players with weight 269.55 pounds or more.

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3 years ago

Maria uses 23/4 pound of flour and Diego buys 2 3/4 pounds of flour. They use 4 3/4 pounds of flour to bake bread. How much flou

BARSIC [14]

8 2/4 is there total , so 8 2/4 - 4 3/4 = 3 3/4 , By the way , sorry for the 30 minute wait or inconvience , Reason: I was relaxing

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3 years ago

Find the coefficient of x^4 in the expansion of (x−9)^8 Please I need help!!

alexdok [17]

Answer:

459270

is the coefficient

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3 years ago