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2 years ago

A) Solve 6(x - 3) = 2x + 10

Mathematics

2 answers:

marysya [2.9K]2 years ago

7 0

Answer:

Step-by-step explanation:

Solve

6(x - 3) = 2x + 10

6x - 18 = 2x + 10

6x - 2x = 10 + 18

4x = 28

x = 28 : 4

x = 7

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

check

6(x - 3) = 2x + 10

6(7-3) = 2 * 7 + 10

24 = 24

the answer is good

Yuri [45]2 years ago

5 0

Answer:

answer is 7

Step-by-step explanation:

first u have to multiple 6 with that bracket one

then u will get something like this 6x-18 and u have to make like terms together and solve it

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3 years ago

What 2 numbers multiply to be -14 and add to be -3

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Xy = -14
x + y = -3

$xy = -14$
$\frac{xy}{x} = \frac{-14}{x}$
$y = \frac{-14}{x}$

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$x + \frac{-14}{x} = -3$
$\frac{x^{2}}{x} + \frac{-14}{x} = -3$
$\frac{x^{2} - 14}{x} = -3$
$x^{2} - 14 = -3x$
$x^{2} + 3x - 14 = 0$
$x = \frac{-(3) \± \sqrt{(3)^{2} - 4(1)(-14)}}{2(1)}$
$x = \frac{-3 \± \sqrt{9 + 56}}{2}$
$x = \frac{-3 \± \sqrt{65}}{2}$
$x = \frac{-3 \± 8.06}{2}$
$x = -1.5 \± 4.03$
$x = -1.5 + 4.03$ $or$ $x = -1.5 - 4.03$
$x = 2.53$ $or$ $x = -5.53$

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2.53 + y = -3
- 2.53 - 2.53
  y = -5.53
  (x, y) = (2.53, -5.53)

x + y = -3
  -5.53 + y = -3
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  (x, y) = (-5.53, 2.53)

The two numbers that multiply to -14 and add up to -3 are -5.53 and 2.53.

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Answer:

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