Error Analysis Micah found the vertex for the function y = -9.5x2 – 47.5x + 63 as shown.
b
2a
47.5
X=
2(-9.5)
47.5
-19
x = -(-2.5)
x = 2.5
y = -9.5(2.5)2 – 47.5(25) + 63
y = -59.375 - 118.75 + 63
y = -115.125
Find and correct Micah's error.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.

step-by-step explanation:

the answer is 9 because the question is telling how much it be together.