Answer:
Step-by-step explanation:So we know x + y = 21 and 5x +10y = 165 We line them up in columns x + y = 21 5x +10y = 165 To eliminate the x variable, I'll multiply every element in the 1st equation by -5. -5x + -5y = -105 5x + 10y = 165 Now we combine (add) the equations, which eliminates x altogether. 5y = 60 ... y = 12 From there, x + 12 = 21 ... x = 21-12 ... x = 9 You should double check. Do 9 nickles and 12 dimes equal $1.65? A very important thing to remember using this method is to do the same thing to each element in the equation that you change! I hope that helps.
To find an area of a rectangle, we use this method: A = lw (length x width)
We need to replace a(rea) with 48.
48 = lw.
The following expressions can be used:
1 x 48.
2 x 24.
3 x 16.
4 x 12.
6 x 8.
8 x 6.
12 x 4.
16 x 3.
24 x 2.
48 x 1.
Answer:
600
Step-by-step explanation: 360÷6=60 60×10=600
Answer:
1/8
Step-by-step explanation:
first multiply 2 x 2 and you get 4
then multiply 2x2x2x2x2 and you get 32
simplify 4/32
4 divided by 4 = 1
32 divided by 4 = 8
1/8
I hope this is clear!
Answer:
20 tomatoes and 10 cucumbers so everybody gets 2 tomatoes and 1 cucumber like the smaller salad from before.
Step-by-step explanation: