Answer:
a = 49°
Explanation:
You use the rule ‘exterior angle of a triangle’ which states that the exterior angle is equal to the sum of the two opposite interior angles.
To put it mathematically:
a + a = a + 49° (Ext angles of triangle)
a = a - a + 49°
a = 49°
Answer:
12/5
Step-by-step explanation:
Answer:
Step-by-step explanation:
The equation of a circle is: 
where ( h, k ) is the center and r is the radius. Therefore, the equation in this instance is .
Answer:
The photographer will take 80 pictures in 10 minutes
Step-by-step explanation:
if 64 pictures were taken in 8 minutes that's 8 pictures every minute, with that knowledge 8 pictures in 10 minutes would be 80 pictures.
7 = -16t2 + 16t + 3
7 = t2 + 3
7 -3 = t2 + 3 - 3
4 = t2
square root of 4 = square root of t2
2 = t
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