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3 years ago

8

Solve: the quantity 2x minus 10 divided by 4 = 3x

2 answers:

AleksAgata [21]3 years ago

7 0

Answer:

x=-2.5

Step-by-step explanation:

2x-10÷4=3x

2x-2.5=3x

-2.5=x

xxTIMURxx [149]3 years ago

6 0

Answer:

Here is ur answer mate

$\frac{2x - 10}{4} = 3x$

$2x - 10 = 3x \times 4$

$2x - 10 = 12x$

$2 x - 12x = 10$

$- 10x = 10$

$x = - 1$

Hope it helps u

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Which equation is the inverse of y = 7x2 – 10?

MrRissso [65]

we have

$y=7x^{2}-10$

To find the inverse

Step 1

Exchanges the variables, x for y and y for x

$x=7y^{2}-10$

Step 2

Isolate the variable y

$x=7y^{2}-10$

$7y^{2}=x+10$

$y^{2}= \frac{x+10}{7}$

Square Root both sides

$y=(+/-)\sqrt{\frac{x+10}{7}}$

Step 3

Let

$f(x)^{-1}=y$

so

$f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}$

therefore

<u>the answer is</u>

The inverse is

$f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}$

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