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vichka [17]
3 years ago
6

While solving an equation for x lewis is left with the equation 2=4. Explain why lewis can be certain that the equation does not

have a solution
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer: You do not have x alone on one side, therefore, you can be certain the equation has no solution!!

Step-by-step explanation: In order for the equation to have a solution it must look like this:

x= and some number

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Inessa05 [86]
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You plan to take a 7-day trip to California. You estimate that it will cost $275 per day to visit Los Angeles, and $400 per day
Viktor [21]

Answer:

You can spend 4 days in Los Angeles and 3 days in San Francisco.

Step-by-step explanation:

From the information given, you can write the following equations:

x+y=7 (1)

275x+400y=2,300 (2), where:

x is the number of days to visit Los Angeles

y is the number of days to visit San Francisco

First, you can solve for x in (1):

x=7-y (3)

Now, you can replace (3) in (2):

275(7-y)+400y=2,300

1,925-275y+400y=2,300

125y=2,300-1,925

125y=375

y=375/125

y=3

Finally, you can replace the value of y in (3) to find x:

x=7-3

y=4

According to this, the answer is that you can spend 4 days in Los Angeles and 3 days in San Francisco.

5 0
3 years ago
Solve 7x + 2 < 9x - 4
Alexus [3.1K]

Answer:

\boxed{\bold{x>3}}

Step By Step Explanation:

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Simplify

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Multiply Both Sides By -1 (Reverse Inequality)

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Simplify

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