Perimeter is when you add up all the sides of a shape. For Anthony's shape, it would be 6 time 5, or 30 inches. For Carol's shape, it would be 6 times 5, or 30. Both shapes have the same perimeter. Hopefully this helps, let me know if you have any more questions.
C) 16 rides
BECAUSE:
4+0.80x16 = 16.8
12+0.30x16 = 16.8
Answer:
284
Step-by-step explanation:
13,632/48
Answer:
11
Step-by-step explanation:
The two equations appear to be ...
- 12x +4y = 152
- 32x +12y = 420
These can be solved for y using Cramer's rule:
y = (152(32) -420(12))/(4(32) -12(12)) = -176/-16 = 11
The cost of the vegetarian lunch is 11.
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<em>Comment on Cramer's Rule</em>
For equations ...
ax +by =c
dx +ey = f
The solutions are ...
x = (bf -ey)/(bd -ea)
y = (cd -fa)/(bd -ea) . . . . note the denominators are the same expression
Once you memorize the pattern of products, this can be the simplest way to solve a pair of equations--especially if you only need one of the variable values.