5.97 * 10^24 - 4.87 * 10^24 = 1.1 * 10^24
Answer:
7y = x + 28
Step-by-step explanation:
Given x = 7t and y = t + 4
Here t is the parameter Now to remove it express one of it in terms of the variables (like x or y)
Given x = 7t
from this we can write ![t=\frac{x}{7}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bx%7D%7B7%7D)
Now substitute this value in the second equation
y = t + 4
![y=\frac{x}{7}+4](https://tex.z-dn.net/?f=y%3D%5Cfrac%7Bx%7D%7B7%7D%2B4)
Therefore the parameter is eliminated.
Answer:
21,42,63,84,105
Step-by-step explanation:
1 nickel = 5 cents
1 dime = 10 cents
The total = $2.40
There’s a total of 30 coins.
12 nickels = $0.60
18 dimes = $1.80
Isabelle has 12 nickels.
The product of 36 and 80 is 2880.