1-116 1.2.6

mario was visiting the carnival when he noticed a few number relationships. he made them into brain teasers for you.

a. if three tenths of the visitors were adults and there were 100 visitors, how many visitors were adults?

b. five eighths of the prizes at the giant spin were dolls. if there were 64 prizes, how many prizes were not dolls?

A. 30 adults; B. 24 not dolls

Step-by-step explanation:

A.

B.

If five-eighths of the prizes were dolls, then three-eighths of the prizes were not dolls.

4.

step-by-step explanation:

it have the same area.brainliest

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1