An amusement park sells adult tickets and children's tickets, with adults costing $5 and children's costing $3. if ed bought 15 tickets and spent a total of $57, how many children's tickets did he buy?

He bought 9 children's tickets.

Step-by-step explanation:

Let x be the no. of children's tickets.

Let y be the no. of adult tickets.

We are given that Ed bought 15 tickets

So,   --1

Cost of 1 child ticket = $3

Cost of x no. of children's tickets = 3x

Cost of 1 adult ticket = $5

Cost of y no. of adult's tickets = 5y

Since we are given that total cost is $57

So,   --- 2

Solving 1 and 2

Substitute the value of y from 1 in 2

So,

Hence he bought 9 children's tickets .

answer: i could not see part the question so ill explain how to get the answer

step-by-step explanation: for instance the distance she travele d is 10 and she traveled the same amout each mile so do 10 divided by how many miles she drove each time and you ge your answer.

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36