Answer:
Price of hamburgers = $2
Price of white-dogs = $3
Step-by-step explanation:
Let
The number price of hamburgers be x
The number price of white-dogs be y
Then the first family buys 3 hamburgers and 2 white -dogs for $13
3x + 2y = 13-----------------------------(1)
Another first family buys 2 hamburgers and 5 white -dogs for $16
2x + 5y = 16----------------------------(2)
To solve let us multiply eq(1) by 2 and eq(2) by 3, we get
6x + 4y = 26-----------------------------(3)
6x + 15y = 48----------------------------(4)
subracting (3) from (4)
6x + 15y = 48
6x + 4y = 26
(-)
-------------------------
11y = 22
---------------------------
y =2
Now substituting the value of y in eq(1),
3x + 2(2) = 13
3x + 4 = 13
3x = 13-4
3x = 9
x =
x =3
Answer:
The answer is 12.
Step-by-step explanation:
So one side is 1.5 in. and you need the surface area, just think about it like this there are 6 squares and each has 4 sides correct, so you multiply 1.5 x 4 which that equals 6. So the surface area of one square is 6. There are 6 squares so just multiply 6 by 6 and you have 12. The answer is 12.
(1) 3x + 2y = 51
(2) 2x + 4y = 54
2*(1) 6x + 4y = 102
2*(1)-(2) 4x + 0y = 48
Divide by 4: x = 12
y = 7.5
Answer:
16 × 2 = 32
Step-by-step explanation:
Since you want a multiple, you can ignore anything with a "divided by" symbol in it.
0 is a multiple of anything, so is considered a "trivial" or "degenerate" case. Usually, that is not of interest.
Multiplying 16 by 2 will give a multiple of 16, as will multiplying 16 by any other non-zero integer.
Answer:
B :)
Step-by-step explanation:
