Solve the system of linear equations using the Gauss-Jordan elimination method.

Mathematics

1 answer:

grandymaker [24]4 years ago

8 0

Answer:

x = -2

y = 5/2

Step-by-step explanation:

See it in the pic.

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Two companies allow you to pay monthly for your food truck permits. Company A charges a one time fee of $150 and $45 per month.

qwelly [4]

Answer:

5 months

Step-by-step explanation:

150 + 45x = 195 240 285 330 375 420

125 + 50x = 175 225 275 325 375 425

5 0

3 years ago

Which price is cheaper? 20% off the original price of $29.99 or 10% off the original price of $26 for a book?

Archy [21]

20% off means that now it costs 80% of original price
80% = 0.8
costs 80% of (means here times (*))original price
29.99*0.8≈23.99

10% off means that now it costs 90% of original price
90%=0.9
costs 90% of (means here times (*))original price
26*0.9=23.40
23.99>23.40,
so is
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3 0

3 years ago

Do these ratios form a proportion?

telo118 [61]

Answer:

No, because both of them will never be able to match; become equivalent. You would have to multiply 2 different numbers to make them match, meaning they would not be proportional. For a comparison to be proportional, the ratio you are trying to simplify to must be achieved by multiplying 2 numbers from the previous ratio by one LCD.

$\frac{3\cdot 4}{7 \cdot 3} = \frac{12}{21}$