Answer:
Step-by-step explanation:
Since y=x+1 plug it into bottom equation as y.
Subtract 1 from both sides
Subtract 5x from both sides
Divide both sides by -4
Now x=-3 into the top equation to find y
y=-2
Order the set of numbers from least to greatest. {63, -34, 36, -27, -13, and 12}
1 answer:
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The sides of a right triangle are
Answer:
∠B = 60°
a = 4.0 units
b = 6.9 units
Step-by-step explanation:
The triangle is right angled. The sum of all angles of a triangle is equal to 180 degrees.
The 3 angles are 90, 30 , ∠B .
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Thus, B = 180 - 120 = 60 degrees
by trigonometry,
sin(30) = = 0.5
a = (8)(0.5) = 4 units
Also,
cos(30) = = 0.866
b = (8)(0.866)= 6.928