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Blababa [14]
3 years ago
10

Evaluate sin 5pi/4 Thank you

Mathematics
2 answers:
Verizon [17]3 years ago
8 0

Answer:

-sqrt(2)/2

Step-by-step explanation:

5pi/4 lies in the third quadrant with basic angle: 5pi/4 - pi = pi/4

sin(pi/4) = sqrt(2)/2

Since it's in quadrant 3, sin would be negative

sin(5pi/4) = -sqrt(2)/2

sqrt: square root

kondaur [170]3 years ago
3 0

Answer:

3.92699081699

Step-by-step explanation:

\frac{5(3.14)}{4}\\=15.7/4

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3 years ago
Is the equation y=4x+1 proportional? *<br> Yes<br> No
Mumz [18]

Answer:

No

Step-by-step explanation:

y = 4x + 1 is not a direct variation. Direct variations have the form y = kx. So y = 4x would be a direct variation (k=4), but not y = 4x+1

7 0
3 years ago
Which ordered pairs make the open sentence true? 3x+y&lt;14 Select all the correct answers. (7, −7) (−1, 6) (3, 6) (4, −1) (6, 0
Jet001 [13]

Answer:

(4, - 1)

(-1, 6)

Step-by-step explanation:

Given the expression :

3x+y<14

Test the opprions to find out the true statement.

(7, - 7)

3(7) + (-7) < 14

21 - 7 < 14

15 < 14 (not true)

(-1, 6)

3(-1) + 6 < 14

3 + 6 < 14

9 < 14 ( true)

(3, 6)

3(3) + 6 < 14

9 + 6 < 14 ( not true)

(4, - 1)

3(4) - 1 < 14

12 - 1 < 14 ( true)

(6,0)

3(6) + 0 < 14

18 < 14 ( not true)

4 0
3 years ago
You work 40 hours/week for 50 weeks and are given the option to be paid hourly or to go on salary. In which situation will you e
sasho [114]

The answer is:

$30,000/year with a 10% bonus

4 0
2 years ago
Simplify the expression. ​
deff fn [24]

(6^-2)^2

When you have a number raised to a power inside parenthesis and then it is raised to another power, to simplify, multiply the two powers together:

-2 x 2 = -4

Simplified is 6^-4

5 0
3 years ago
Read 2 more answers
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