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Brut [27]
2 years ago
9

Select all the equations on which the point (10,0) lies.

Mathematics
1 answer:
Makovka662 [10]2 years ago
8 0

Answer:

  B, C

Step-by-step explanation:

Since y=0, you are looking for equations such that 10 times the coefficient of x is the constant in the equation.

  a) 5·10 ≠ 15

  b) 2·10 = 20 . . . . select this one

  c) 10 = 10 . . . . select this one

  d) 3·10 ≠ 13

  e) 4·10 ≠ 20

  f) 6·10 ≠ 50

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Answer:  1/3

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

When adding or subtracting fractions, they must have the same denominator.

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3 years ago
Which of the following is a factor of 7x2 - 12x - 4? (6 points)
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Answer:

We conclude that 'None of the above' is the correct answer.                    

Step-by-step explanation:

Given the expression

7x^2\:-\:12x\:-\:4

Breaking the expression into groups

7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)

Factor out x from 7x^2\:+\:2x

=x\left(7x+2\right)

Factor out -2 from \left(-14x-4\right)

=-2\left(7x+2\right)

so the expression becomes

7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)

                         =x\left(7x+2\right)-2\left(7x+2\right)

Factor out the common term 7x+2

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Therefore, from the given options, we conclude that 'None of the above' is the correct answer.                    

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Step-by-step explanation:

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Answer:

x=-14

Step-by-step explanation:

30-(-16)=-30+16=-14=x

x=-14

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