For George’s party, his dad bought an ice cream cake. After the party, 1/3 of the cake was left. The next day, George ate half o
1 answer:
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Answer:
- movie: $3.75
- video game: $5.75
Step-by-step explanation:
Two equations in two unknowns can be written:
3m +5v = 40
9m +7v = 74
These can be solved a variety of ways. One of them is using Cramer's rule. It tells you the solution to
- ax +by = c
- dx +ey = f
is given by ...
- ∆ = bd -ea
- x = (bf -ec)/∆
- y = (cd -fa)/∆
For the numbers above,
- ∆ = 5·9 -7·3 = 24
- m = (5·74 -7·40)/24 = 90/24 = 3.75
- v = (40·9 -74·3)/24 = 138/24 = 5.75
The rental cost for each movie is $3.75; for each video game, it is $5.75.
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The attached graph shows a graphing calculator solution to these equations.
Answer:
<
<
< 2.5
Step-by-step explanation:
Given the following numbers, , let's express each as whole or decimal numbers, to find out the least to the greatest.
≈ 2.2
2.5 (already in decimal form)
≈ 1.7
From the least to the greatest, we have:
<
<
< 2.5