Answer:
The number of <u>dimes are 100</u> and number of <u>quarters are 140.</u>
Step-by-step explanation:
Let the number of dimes be 'd' and quarters be 'q'.
Given:
The sum of amount is $45.
The total number of coins are 240.
1 dime = $0.10
∴ 'd' dimes =
1 quarter = $0.25
∴ 'q' quarters =
Now, as per question:
Multiplying equation (1) by -0.1 and adding the result to equation (2), we get:
Therefore, the number of dimes are 100 and number of quarters are 140.
Answer:
Ty ;)
Step-by-step explanation:
0.5 x 4 = 2 feet / 2 feet in 4 seconds
15 - 2 = 13
New depth: 13 feet
0.4 x 3 = 1.2 feet / 1.2 feet in 3 seconds
13 - 1.2 = 11.8
New depth: 11.8 feet
Step-by-step explanation:
let number of brand new busses = x
let number of secound hand busses = y
from first condition
x + y = 20
x = 20 - y
cost of brand new busses = 8000x
cost of scount hand bus = 3500y
8000x + 3500y = 160000
8000( 20 - y ) + 3500y = 106000
160000 - 8000y + 3500y = 106000
-4500y = -54000
y = 12
x = 20 - y
x = 8
Answer:
(7/2, 27/2) or (3.5, 13.5)
Step-by-step explanation:
The x-coordinate of the midpoint is the average of the x-coordinates of the endpoints.
The y-coordinate of the midpoint is the average of the y-coordinates of the endpoints.
x-coordinate of the midpoint:
(-3 + 10)/2 = 7/2
y-coordinate of the midpoint:
(9 + 8)/2 = 27/2
Answer: (7/2, 27/2) or (3.5, 13.5)