Answer:
Victor put 35 cookies on a plate for the family party.
Step-by-step explanation:
The information provided is:
- Victor baked 50 cookies.
- He put 70% of them on a plate to serve at a family party.
- The rest of the cookies he placed in a box to take to his soccer team.
The total number of cookies Victor baked is, <em>N</em> = 50.
Compute 70% of 50 as follows:

Thus, Victor put 35 cookies on a plate for the family party.
My work and the answer is shown up in the picture.
I used the substitution method to check my answers by using x and y into the two equations.
Answer:
Step-by-step explanation:
B.(10,1)
Answer:
12 boys
Step-by-step explanation:
Use the ratio
7(3)= 21
4(3)= 12
Answer: 180 i think
Step-by-step explanation: .5*200+.2X=.3(200+X)
100+.2X=60+.3X
.2X-.3X=60-100
-.1X=-40
X=-40/-.1
X=400 OUNCES OF 20% COPPER.
PROOF
.5*200+.2*400=.3(200+400)
100+80=.3*600
100+80=180
180=180