Answer:
No (1,8) is not a solution to 19x+3y=2.
However, (1,8) is a solution to 3x+y=11.
Step-by-step explanation:
(1,8)
The one represents the x shown in each equation, the eight represents the y.
Substitute the one in for the x and the eight in for the y.
19x+3y=2
19(1)+3(8)
3x+y=11
3(1)+(8)
Next, solve the equation.
19(1)+3(8) = 43
3(1)+(8) = 11
As you can see, 43 does not equal 2.
But, 11 does equal 11.
Answer: 13.96 in²
<u>Step-by-step explanation:</u>
d = 2r
16 = 2r
8 = r

180(θ) = 25(π)
θ =
θ = 
A =
r² θ
= 
= 
= 13.96
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Answer: 12π
<u>Step-by-step explanation:</u>
s = rθ
= 60
= 12π
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Answer: 22.440 cm²
<u>Step-by-step explanation:</u>
A =
r²θ
=
(10)²
= 
= 22.440
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Answer: 270°, 630°, -450°, -810°
<u>Step-by-step explanation:</u>
positive: -90 + 360 = 270
270 + 360 = 630
negative: -90 - 360 = -450
-450 - 360 = -810
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Answer: 
<u>Step-by-step explanation:</u>

= 
= 

= 
= 
If you subtract another 2π, you will end up with a negative value. The question asks for the smallest positive value.
Answer:
C
Step-by-step explanation:
plant cells act differently compare to animal cell
Answer:
Reminder to drink some water, have some food and relax. <3 :)
Step-by-step explanation: