How do you find how many solutions a system of equations has?

How would you find the y-coordinate of the vertex of a parabola if you only have the equation

A corner shelf is 1/4 of a circle and has a radius of 10.5 inches. Enter the area of the shelf in square inches. Round your answer to the nearest hundredth. I know the answers are 86.55 - 86.68 but I don't know how it got that answer

Choose the statement below that best describes the following chemical equation: 4 Al + 3 O2 - - > 2 Al2O3 A. When aluminum reacts with atmospheric oxygen, aluminum oxide is produced B. The equation demonstrates the law of conservation of mass. C.

What fraction is equivalent to 48%?

What is the difference between - 8 and the absolute value of 6

A number is shown in word form. "Three hundred thirteen thousand, one-hundred sixty" What is the number in expanded form?

2.80=9 (70) / I. I need a answer for i

What is the answer to f (x) = √x-3

Suppose that 13 inches of wire costs 65 cents. At the same rate, how much (in cents) will 27 inches of wire costs.

In right ∆ABC, m B = 90°, m C = 40°, and BC = 10. What are the other two side lengths of the triangle?