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erastova [34]
2 years ago
10

Is x=7 a solution to the equation x-5-3(x+2)? Fill in the blanks to answer the question.

Mathematics
2 answers:
Anuta_ua [19.1K]2 years ago
8 0

Answer:

1) 2=27

2) x= -11/2

3) no

Step-by-step explanation:

meriva2 years ago
8 0

-------------------------------------------------------------------------------------------------------------

Answer:  \textsf{x = 7 is not a solution}

-------------------------------------------------------------------------------------------------------------

Given: \texts{x - 5 = 3(x + 2)}

Find:  \textsf{Determine if x = 7 is a solution}

Solution:  The first step would be to substitute 7 for every x that we have in the expression and then we simplify both sides.

<u>Substitute x with 7</u>

  • \texts{x - 5 = 3(x + 2)}
  • \texts{(7) - 5 = 3((7) + 2)}

<u>Simplify both sides</u>

  • \texts{2 = 3(7 + 2)}
  • \texts{2 = 3(9)}
  • \texts{2 = 27}

Since the numbers are not equal on both sides this evaluates to false meaning that x = 7 is not a solution of the expression that was provided.

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8 0
3 years ago
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2 years ago
The numbers that satisfy the equation a =5.
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<h2>Explanation:</h2>

We use an equation to say that two things are equal. An equation always has an equal sign "=". So an equation tells us that the left side is equal to the right side. In this case, we have the following equation:

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So the only value that makes this equation to be true is 5, because:

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For instance, let's choose another value, say, 8. So substituting:

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3 years ago
Weight/Calories per Day 1000 to 1500 cal. 1500 to 2000 cal. 2000 to 2500 cal. Total
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<h2>Answer:</h2>

Option: D is the correct answer.

The probability is: 0.50

<h2>Step-by-step explanation:</h2>

Weight/Calories  1000-1500   1500-2000  2000-2500   Total

    120 lb.                 90               80                   10               180

    145 lb.                 35               143                  25              203

    165 lb.                  15                27                  75               117

    Total                140               250                110             500

We are asked to find the probability that a person consumes 1500-2000 calories in a day.

Total number of people who were surveyed=500

Total number of people who consume 1500-2000 calories in a day are:250

              Hence, Probability is:

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