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agasfer [191]
3 years ago
5

How do I turn this rad into degrees with no calculator? 4pi/5?

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0
You need to know that pi rad = 180°

Then 4 pi / 5 rad = 4 (180°) / 5

Those are numbers that you can multiply and divide wihout calculator and the result is 720 °/ 5 = 144 °
olga_2 [115]3 years ago
5 0
I hope this helps you



pi=180 degree



4.180/5


4.36


144
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2 angles measure 40 degrees each, what does the third angle measure? what type of triangle is it?
zimovet [89]

Answer:

Part a): 100 degrees

Part b): Isosceles Triangle

Step-by-step explanation:

Part a): Since the angle measures of all triangles add up to 180 degrees and since the other two angles are 40 degrees, which add up to 80, we can use subtraction to find the answer.

180 - 80 = 100

Part b): Since only two of the three angles in this triangle have the same measure, we can find that it is an isosceles triangle, with base angles measuring 40 degrees, and the vertex angle being 100 degrees.

3 0
3 years ago
Which of the following represents the zeros of f(x) = x3 − 11x2 + 38x − 40?
Delvig [45]
The answer is <span>5, 4, 2
</span>
Among all choices we have 5, so
x = 5
x - 5 = 0
Let's divide the expression by (x - 5) using the long division:
                          x³ - 11x² + 38x - 40
(x - 5)  * x² =      x³ - 5x²                   Subtract
____________________________
                              -6x² + 38x - 40
   (x - 5) * (-6x) =    -6x² + 30x          Subtract
____________________________
                                           8x - 40
                    (x - 5) * 8 =     8x - 40   Sutract
____________________________
                                              0

Thus: x³ - 11x² + 38x - 40 = (x - 5)(x² - 6x + 8)

Now, let's simplify x² - 6x + 8.

x² - 6x + 8 = x² - 2x - 4x + 8 =
                  = x² - 2*x - (4*x - 4*2) = 
                  = x(x - 2) - 4(x - 2) =
                  = (x - 4)(x - 2)

Hence:
x³ - 11x² + 38x - 40 = (x - 5)(x - 4)(x - 2)
To calculate zero:
x³ - 11x² + 38x - 40 = 0
(x - 5)(x - 4)(x - 2) = 0
x - 5 = 0            or             x - 4 = 0              or      x - 2 = 0
x = 5                 or              x = 4                   or      x = 2
3 0
3 years ago
Voltage = 18v. Current = 36 amps resistance =?
kupik [55]
Voltage= Current * Resistance
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8 0
4 years ago
You and a friend each roll a standard die to see who goes first in a board game. What is the probability that at least one of yo
saul85 [17]

Answer:

2

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Step-by-step explanation:

2 over 6

8 0
3 years ago
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Answer:

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Step-by-step explanation:

I got that answer by multiplying 22 and 49. We know that product means to use the multiplication operation so our problem would look like this:

22 * 49 = 1,078

6 0
4 years ago
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