So 39 books and it must equal 70. So 39 + ___ = 70 or, to make it a bit simpler, 70 - 39 = ___. You should be able to do that.
There are 2 cups in every pint so you do 190/2 and that's 95 pints.
The answer is A, a cylinder does not have a vertex.
Answer: 3x^2 - 10x + 8 = (x -2)(3x-4)
Congruent means they are the same,
A and Q are both the first letters, which mean they would also be the same.
Set the two equations equal to each other, solve for x then solve for angle A.
x-10 = 2x-30
Add 30 to each side:
x+20 = 2x
Subtract 1x from each side:
x = 20
Now replace x with 20 in the equation for A
A = 20-10
Angle A = 10 degrees.