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Bond [772]
3 years ago
8

Please help i don’t know how to do this and what are the answers

Mathematics
1 answer:
inn [45]3 years ago
6 0

Answer:

the slope of pq is m=-13/8

and for rs is m=-1

yes thes line are parallel

Step-by-step explanation:

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Prove that sin20 sin40 sin60 sin80=3/16
xeze [42]
Sin 20° · sin 40° · sin 80° = 1/2 ( cos 20° - cos 60° ) · sin 80° =
= 1/2 ( cos 20° sin 80° - cos 60° sin 80° ) =
= 1/2 ( (sin 100° + sin 60°)/2 - 1/2 sin 80° )=            ( sin 100° = sin 80° )
= 1/2 · ( 1/2 sin 60° ) = 1/4 sin 60° = √3 / 8
sin 60° = √ 3/2
√ 3 / 2 · √ 3 / 8 = 3/16  ( correct )
3 0
3 years ago
What is the coefficient of the term of degree 9 in the polynomial below? 5+7x9+12x-5x7+3x2
OlgaM077 [116]
Given a polynomial functin
ax^2+bx+c, the highest degree is 2
given another polynomial say ax^3+bx^2+cx+d, the degree of the polynomial is 3.
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From the function given:
5+7x^9+12x-5x^7+3x^2

The highest power is 9, thus it is a polynomial of degree 9. 

The coefficient of the term of degree 9 is 7.

The answer is 7. 
7 0
3 years ago
Solve for x.<br> Your answer must be simplified.<br> -36 + X &lt; 8
KIM [24]
First, you add 36 to both sides to get rid of -36. Then, the right side turns to 44 when add 8 and 36 together. Finally, your final answer is x<44

3 0
3 years ago
X <br> _ - 3 = -5 please help solve<br> 8
kirill [66]
-8-3=-5. there . thats the answer.
4 0
3 years ago
Find the arc length of the partial circle.
Len [333]

Answer:

4.71

Step-by-step explanation:

Arc length = 2*pi*r-(pi*r)/2

Arc length = 3*2*(3.14)/4 = 4.71

6 0
3 years ago
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