Answer: B
Step-by-step explanation:
To solve the system of equations, use substitution.
x+y =24
Subtract x on both sides
y=-x+24
We can now substitute -x+24 in for y in the second equation.
3x+5y=100
3x+5(-x+24)=100
Distribute the 5
3x-5x+120=100
Subtract the 120 on both sides
-2x=-20
Divide by 2 on both sides
x=10
Substitute 10 in for x in the first equation.
x+y=24
10+y=24
Subtract 10 inches on both sides
y=14
So there are 10 3point questions and 14 5 point questions, so choice B
Hope this helped!
8x^5 * 19x^12
I believe would be your answer.
To solve this problem you must apply the following proccedure:
1. You have that <span>25-foot long board is to be cut into two parts. Then, the first equation is:
a+b=25
2. </span><span>The longer part is one foot more than twice the shorter part:
a=1+2b
3. The system of equation is:
a+b=25
a=1+2b
4. When you solve it, you obtain:
a=25-b
25-b=1+2b
25-1=2b+b
24/3=b
b=8 ft
a=1+2(8)
a=17 ft
</span>
Answer:
Step-by-step explanation:
