Use trigonometry
sin 42 = a / 21
a = 21 sin 42 = 14.05
Answer:
z = 5
Step-by-step explanation:
Please let me know if you want me to add an explanation :)
Answer:
It's angle ABE
Step-by-step explanation:
It's supplementary because the sum of the measurements of both angles EBC and ABE is 180°
Answer:
a

b

Step-by-step explanation:
From the question we are told that
The data is 87 91 86 82 72 91 60 77 80 79 83 96
Generally the point estimate for the mean is mathematically represented as

=> 
=>
Generally the point estimate for the standard deviation is mathematically represented as

=> 
=> 
Answer:
y = (x -2)^2 +4
Step-by-step explanation:
The vertex form of the equation of a parabola is ...
y = a(x -h)^2 +k
for vertex (h, k) and vertical scale factor "a". When a > 0, the parabola opens upward.
One equation for your parabola could be ...
y = (x -2)^2 +4
__
In standard form this one is ...
y = x^2 -4x +8