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Vanyuwa [196]
3 years ago
6

Solve the equation 4b + 22 = 5(b + 4) − 1

Mathematics
2 answers:
babymother [125]3 years ago
7 0

Answer:

b=3

Step-by-step explanation:

djverab [1.8K]3 years ago
3 0

4b + 22 = 5 (b + 4) - 1 (remove the parantheses)

4b + 22 = 5b + 20 - 1 (calculate)

4b + 22 = 5b + 19 (move the terms)

4b - 5b = 19 - 22 (collect like terms and calculate)

-b = -3 (change the signs)

<em>b = 3</em>

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How might this number be shown on a calculator?<br> 5.31x1037 (37 is above 10)<br> [?]e[ ]
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Answer:

5.31E37

Step-by-step explanation:

Given

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Required

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Standard calculators, today are built to always convert huge numbers or extremely small number to scientific notations;

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3 years ago
Which of the following is a solution of the system 2x + y = 9 and 3x + 5y = 19.​
Nezavi [6.7K]

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I will do this problem in 2 ways. I.)Substitution II.)Elimination

Solution I.) Substitution

We can subtract 2x from both sides in the first equation.

y=9-2x

Now we can substitute the y in the second equation with 9-2x

3x+5(9-2x)=19

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Solution II.)Elimination

We can multiply both side of first equation by 5 to get a 5y in both equations.

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Now because both are positive 5y we just need to do simple subtraction of the 2 equation, each side respectively.

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Ultimately you get the same answer, both are viable methods, some problems are faster with one method but I recommend mastering both since they are very useful.

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