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andriy [413]
4 years ago
9

Someone please help explain how to find x.

Mathematics
1 answer:
natta225 [31]4 years ago
3 0
The exterior angles of any polygon will always add up to 360 degrees. Since we know all the values for every exterior angle, we can simply make the following equation:

3x + (x + 50) + 4x + (2x + 40) = 360

Simplify:

10x + 90 = 360
10x = 270
x = 27

If you want me to explain anything I did here, just ask :)

-T.B.
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How would the expression x^3 - 64 be rewritten using difference of cubes? A. (x + 4)(x^2 - 4x + 16) B. (x-4)(x^2 + 4x + 16) C. (
slavikrds [6]

Answer:

D)

Step-by-step explanation:

4 is an evident zero of the equation x^3 - 64.

x^3 - 64 can only be factorized with (x-4) and not with (x+4)

because x - 4 = 0 <==> x = 4 and 4^3 -64 = 0

Developing B) would be:

x^3 + 4x^3 + 16x - 4x^2 - 16x - 64 = 5x^3 - 4x^2 -64

So it doesn't match so it's D)

3 0
2 years ago
Help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! pls
valentina_108 [34]

Answer:

18m^2 of cement

Step-by-step explanation:

since 4*6 is 24

You want to take 24 and subtract 1/4 of the rectangles area.

1/4 of 24 is 6

24 - 6 is 18

8 0
3 years ago
An airplane traveling at 13,000 feet makes a climb of 5000 feet followed by a descent of 3,000 feet. represent the planes final
mrs_skeptik [129]

Answer:

13,00 + 5,000 - 3,000= 15,000

3 0
3 years ago
Randy's average grade is 89 with a standard deviation of 3. His grades follow a normal distribution.
Shtirlitz [24]

Answer:

0.9545

Step-by-step explanation:

To calculate the probability, we need to get the standard score or z-score of each of the scores.

Mathematically;

z-score = (x-mean)/SD

mean = 89 and SD(standard deviation) = 3

for 83, the z-score = (83-89)/3 = -6/3 = -2

for 95, the z-score = (95-89)/3 = 6/3 = 2

The probability we are to calculate has the following range;

P(-2<z<2)

we use the standard score table to estimate this;

= P(z<2) - P(z<-2)

P(z<2) = 0.97725

P(z<-2) = 0.02275

Plugging these values into the equation, we have ;

P(-2<z<2) = 0.97725 - 0.02275 = 0.9545

3 0
3 years ago
Select the correct answer.
Leya [2.2K]

Answer : johnathan and seth

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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