We find the length of AD using the similarity of right triangle property. See image attached.

AD² = BD × CD
AD² = 9 × 36
AD² = 324
AD² = 18²
AD = 18

The length of AD is 18 units

7 0

3 years ago

Katya treated everyone in theater to a pizza party. She bought 12 pizzas and six 2-liters of soda. The bill was $137.64 (before

sweet-ann [11.9K]

let the price of pizza and soda( per 2 litre bottle) be x and y

from 1st condition

12x+2y=137.6.....(1)

from 2nd condition

x+y =11.95.......(2)

multiply eq. (2) by 2

2x+2y=23.9.....(3)

subtracting (1) and (3)

12x+2y=137.6

2x+2y= 23.9

10x = 113.7

x=113.7/10

x=11.37

2(11.37)+2y=23.9

22.74+2y=23.9

2y=23.9-22.7

2y=1.2

y=0.6

So the prices of the pizza and soda are 11.37 and 0.6 dollars.

4 0

3 years ago

A storage container for oil is in the shape of a cylinder with a diameter of 10 feet and a height of 17 feet which measurement i

strojnjashka [21]

The answer would be 1335.18

8 0

3 years ago

What is the vertex of the parabola?A. (-1,0)B. (0,-3)C. (1,-4)D. (3,0)​

What is the vertex of the parabola?A. (-1,0)B. (0,-3)C. (1,-4)D. (3,0)