3 years ago

THIS IS URGENT I AM BEING TIMED IF YOU ANSWER ALL OF THEM I WILL MARK YOU BRAINLYIST.

Mathematics

1 answer:

Dafna1 [17]3 years ago

7 0

Answer:

The answer is 6.56

Step-by-step explanation:

11.20 is the total. You multiply that by .15 and get $1.68 for the tip. You multiply $11.20 by .05 for the tax and get $.56. You add them together and get $13.44. You subtract that from $20.00 and get $6.56

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Breann solved the system of equations below. What mistake did she make in her work?

mihalych1998 [28]

If 2x+y=5, then y=5-2x, so she substituted correctly.
x+4x=5x, so she combined like terms correctly.
She didn't subtract 10 from both sides, she added 10 to both sides.

Check the solution:
$2x+y=5 \hbox{ and } x-2y=10 \\
2 \times 4-3=5 \hbox{ and } 4-2 \times (-3)=10 \\
8-3=5 \hbox{ and } 4+6=10 \\
5=5 \hbox{ and } 10=10 \\
\checkmark$

The answer is: She made no mistake.

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At top speed, a fox can cover 7 miles in 12 minutes. If a fox could continue at this rate indefinitely, how long would take the

Andrej [43]

Answer:

It would take 6 hours for the fox to cross the 210 mile trail of the Sonoran Desert.

Step-by-step explanation:

210 miles divided by 7 miles is 30 miles. 30 miles multiplied by 12 minutes is 360 minutes or 6 hours.

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2 years ago

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