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sleet_krkn [62]
3 years ago
8

Is the formula s=(n-2)180

Mathematics
1 answer:
Phantasy [73]3 years ago
5 0

Answer:

Number of sides of the polygon

Step-by-step explanation:

The formula S=(n-2)180 is the sum of the measures of interior angles. So that's what S stands for. The only other variable remaining is n which is the number of sides of the polygon.

There's nothing I can do to help you understand this, you just have to memorize it.

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Solve 1/f=1/a+1/b for f
Alika [10]

Answer:

f=ab/a+b

Step-by-step explanation:

Let's solve for f.

1/f=1/a+1/b

3 0
3 years ago
Mary took a math test and she got four questions incorrect and 21 correct. What percent did answer correctly?
AnnZ [28]

Answer:

84%

Step-by-step explanation:

21 correct + 4 wrong = 25 questions in total

\frac{21}{25} x 4 = \frac{84}{100}

\frac{84}{100} = 0.84

0.84 = 84%

6 0
3 years ago
Brainliest for you if you answer!
eduard

<u>To find the constant of proportionality:</u>

  ⇒ must define constant of proportionality

    ⇒ <em>Constant of Proportionality:  ratio of two proportional values at a </em>

       constant value

       ⇒ (in this case) two proportional values are x and y

<u>The ratio between x and y is equal to</u>

  \frac{y}{x} =\frac{66}{1.2}=55

<u>Answer:</u> <u>55</u> or <u>Choice 1</u>

<u></u>

Hope that helps!

7 0
2 years ago
Sheila bought some rose plants and sunflower plants.There were 35 rose plants than sunflower plants.If the ratio of the rose pla
DENIUS [597]
So assuming that youmeans there were 35 MORE rose plants than sunflower seeds, then

Rose:Sunflower =8:3

rose=sunflower+35
therefor

8 units=rose
3 units=sunflowers

rose-35=sunflower
8unit-35=3unit
5unit-35=0
5unit=35
therefor
35=5unit
divide by 5
7=1unit


so 8 units of roses

7 times 8=56

3 units of sunflowers
3 times 7=21

rose=56
sunflower=21
6 0
3 years ago
Some banks now use continuous compounding of an amount invested. In this case, the equation that models the value of an initial
Komok [63]

Answer:

In this case, the equation that models the value of an initial investment of P dollars in t years at an annual interest rate of r is given by A = Pert.

Step-by-step explanation:

4 0
2 years ago
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