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
Answer:
White
Step-by-step explanation:
20 divided by 4 = 5
White was spun 5 times.
Answer:
Step-by-step explanation:
The number of red marbles in the bag is; 
.
The number of blue marbles in the bag is; 
.
The number of white marbles in the bag is; 
.
The total number of marbles in the bag is: 
.
The probability of selecting a blue marble is 
We substitute the given information to obtain:
We simplify to obtain:
Answer:
Your answer is -4
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