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Tpy6a [65]
2 years ago
9

Given the function

Mathematics
1 answer:
nika2105 [10]2 years ago
4 0

\left \{ {{7x+6\:\:\:\:\:\:x

f(-1)

Solve

-7\cdot \:1+6x                          Swap the negative sign

-7+6x                               Multiply the numbers

-7+6x+7                  Add 7 to both sides

6x                                       Simplify

\frac{6x}{6}                                       Divide both sides by 6

x                                        Simplify

-7\cdot \:1+12x                     Swap the negative sign

-7+12x                          Multiply the numbers

-7+12x+7              Add 7 to both sides

12x                                   Simplify

\frac{12x}{12}                                  Divide both sides by 12

x                                      Simplify

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Your ship has steamed 1651 miles at 20 knots using 580 tons of fuel oil. The distance remaining to your next port is 1790 miles.
oee [108]

The 680 tons of fuel needed to cover the next 1790 miles distance.

According to the statement

We have given that the ship covered a 1651 miles distance at 20 knots by a 580 tons of fuel oil.

And distance remaining to next port is 1790 miles and speed increases to 25 knots.

And we have to find that how much fuel used to reach that port.

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3 0
2 years ago
My rule is: take a number, add 15, and then subtract 9. Write down the rule.
Ksivusya [100]
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Is that what you’re looking for?
5 0
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