Answer:
87 degrees
Step-by-step explanation:
The triangle with the angles 79 and 15, we can find the last value because all angles in a triangle add up to 180. So, 180-79-15= 86 degrees for the angle of the triangle.
Because the 86 degree angle is complimentary, or when added up to the adjacent angle, is 90 degrees (we see that little box sign), that means that 90-86=4 degrees for the upper triangle in the angle that isn't the question mark. Now that we know 2 values for the top triangle, we can solve for the third value by subtracting those two from 180.
180-89-4=87 degrees. Hope this helps!
Answer:
B
Step-by-step explanation:
The small triangle is half the size of the entire triangle. 27/2 = 13.5
The time it takes for the car to complete one revolution around the track is calculated by dividing the circumference of the circular track by the speed of the car.
This may mathematically be expressed as,
time = circumference / speed
Given:
The equation is:
To find:
The solution for the given equation.
Solution:
We have,
The solution of the given equation with reasons is shown below:
Statement Reason
(1) 
(1) Commutative property of addition
(2) 
(2) Distributive property of multiplication under
addition
(3) 
(3) Subtraction property of equality
(4) 
(4) Multiplication property of equality
Therefore, the solution for the given equation is .
