Answer:
Its A
Step-by-step explanation:
ez
Answer:
Term to add is (3/8)^2 = 9/64
Step-by-step explanation:
Here, we want to know the value that must be added to make the equation a perfect square.
x^2 - 3/4x = 5
x^2 -3/4x -(3/8)^2+ (3/8)^2 = 5
x^2 -3/4x + (3/8)^2 = 5 + (3/8)^2
= (x-3/8)^2 = 5 + (3/8)^2
So the term to add is (3/8)^2 = 9/64
Its either a or b, but what does those signs around x means
Answer:
42.5 square units.
Step-by-step explanation:
This is a trapezoid.
The area of a trapezoid can be found by a+b/2(h)
a=12
b=5
h=5
Plug in.
5+12/2(5)
17/2(5)
8.5(5)
42.5
Answer:None of the given choices
cos θ = sqrt(3) / 2
Explanation:cos 2θ + cos 2θ = 1
2 cos 2θ = 1
cos 2θ = 0.5
Now, to get the value of θ, we would need to use the rules of double the angle attached in the figure.
I will use:
cos 2θ = 2 cos²θ - 1
Substitute with cos 2θ = 0.5 and solve for cos θ as follows:
cos 2θ = 2 cos²θ - 1
0.5 = 2 cos²θ - 1
2cos ²θ = 0.5 + 1 = 3/2
cos²θ = 3/4 = 0.75
cos θ = ±√0.75
Since we are given that θ is acute, therefore, θ belongs to the first quadrant which means that cos θ is positive
Based on the above:
cos θ = √0.75 = √3 / 2
Hope this helps :)