Solve the system by substitution.
y=-x^2+2x+10
y=x+4

x=3, y=7

x=-2, y=2

Step-by-step explanation:

System of Equations

We have the following equations:

We'll solve it by substitution. Since the second equation is already solved for y, we use that expression and substitute into the first equation:

Since this is a quadratic equation, it's convenient to have all terms to one side:

Simplifying and reordering:

Factoring:

Solving:

x=3, x=-2

Those yield to two solutions for y:

y=x+4

y=7, y=2

The solutions of the system are:

x=3, y=7

x=-2, y=2

henry ordered 5 large pizzas

step-by-step explanation:

sorry no step by step

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5