Answer:
y = -3
Step-by-step explanation:
Answer:
originally I had planned on getting the car today and it to
The answer is: GCF(9, +7^3) = 1
Explanation:
9 = 3^2
+7 = +7×7
3 = 3
GCF = 1
9 / 1 = 9
+7 / 1 = 7
3 / 1 = 3
Answer:
The number of nickel coins is 10 and the number of quarter coins is 5
Step-by-step explanation:
<u><em>The correct question is</em></u>
Mary has 15 coins with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there
Let
x ----> the number of nickel coins
y ----> the number of quarter coins
Remember that


we know that
Mary has 15 coins
so
-----> equation A
The total value of the coins is $1.75
so
----> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (10,5)
therefore
The number of nickel coins is 10 and the number of quarter coins is 5