Answer:
4
Step-by-step explanation:
Answer:
The base is 11 cm.
Step-by-step explanation:
The formula for the area of a triangle is . If we plug in what we know to this equation, we are left with , which we now need to simplify.
First, we combine like terms.
Then, we can eliminate the and on the right side of the equation, since they cancel each other out.
Finally, we take the square root of both sides of the equation and find our answer:
Answer:
Step-by-step explanation:
For a, you need to plugin -9 into the equations inside the boxes and solve.
y = x^2 + 3, y = 9^2 + 3, y = 81 + 3, y = 84.
y = √x - 2, y = √9 - 2, y = 3 - 2, y = 1.
For b, It's only possible for the second equation to output 0, as for the first, it's impossible for x^2 to equal -3 and add to 3 to get 0. For the second equation you can plug in 4 to get 2 - 2, which gives 0.