Answer:
maybe 90*
Step-by-step explanation:
Answer: Sample size required is 35
Step-by-step explanation:
The attachment below shows the calculations.
Answer:
6.8 inches
Step-by-step explanation:
Given data :
m∠ A = 53° , m∠ C = 84° , side a = 8 inches
therefor m ∠ B = ( 180 - (84 + 53 )) = 43°
<u>Find the length of side b </u>
we will apply sine rule here

=
= 
∴ b = ( sin43° * 8 ) / sin53°
= ( 0.6819 * 8 ) / 0.7986
= 5.4552 / 0.7986 = 6.83 ≈ 6.8 inches
Answer:
y= -2
x = 5
Step-by-step explanation:
Multiply the top equation by 2 to get
2x + 6y = -2
then subtract the bottom equation by the new equation to get
2x + 6y = -2
--------------------
2x + 2y = 6
which is
4y = -8
y = -2
If y = -2
Then plug -2 into y in the top equation to get x + 3(-2) = -1 and simplify which is
x + (-6) and add 6 to both sides to get x = -1 + 6
which is x = 5