Her brother sent C. 490 messages.
In order to find this, we need to set it up as a proportion. Once we have done that, we can cross multiply and solve for the unknown variable.
(4/7) = (280/x) -----> Cross multiply.
4 * x = 7 * 280
4x = 1960
x = 490
Answer: $0.70 per cookie
Which is the same as saying 70 cents per cookie
=============================================================
Explanation:
The unit rate is the cost of one cookie. The term "unit" means "one".
10 cookies = 7 dollars
10/10 cookies = 7/10 dollars ...... divide both sides by 10
1 cookie = 0.70 dollars
Since one cookie costs $0.70, the unit rate is $0.70 per cookie or you can say 70 cents per cookie.
Answer:
Step-by-step explanation:
660 inches
Answer:
First we have to find the value of x;
then we have to find the value of y;
Step-by-step explanation:
here,
2x= 12
x = 12\2
x = 6
now,
4y = 12
y = 12\4
y = 3
° the value of x is 6
° ° the value of y is 3
Solve the system using substitutions:
x has a value of 1. Use this value to find the value of y.
y has a value of 1.
x=1
y=1
