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3 years ago

IS THERE ANOTHER WEBSITE JUST LIKE BRAINLY

Mathematics

2 answers:

Gala2k [10]3 years ago

5 0

Not sure, but if you find out.... lmk. Bc this website is poor

Ulleksa [173]3 years ago

5 0

Answer:

seriously, what's it called?

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Use algebra to solve 3x+4 = 1/x<br> The exact solutions are x=<br> Х

skad [1K]

Answer:

Ignore the A before the ±, it wouldn't let me type it correctly.

$x=\frac{2±\sqrt{7} }{3}$

Step-by-step explanation:

3x + 4 = 1 ÷ x

3x + 4 - 4 = 1 ÷ x - 4

3x = 1 ÷ x - 4

$3x=\frac{1}{x} +\frac{x(-4)}{x}$

$3x=\frac{1+x(-4)}{x}$

$3x=\frac{1-4x}{x}$

$x(3x)=x(\frac{1-4x}{x})$

x · 3x = - 4x + 1

3x² = - 4x + 1

3x² - (- 4x + 1) = 0

3x² + 4x - 1 = 0

Ignore the A before the ±, it wouldn't let me type it correctly.

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

a = 3

b = 4

c = - 1

$x=\frac{-4±\sqrt{4^{2}-4((3)(-1)) } }{2(3)}$

$x=\frac{-4±\sqrt{16-4((3)(-1)) } }{2(3)}$

$x=\frac{-4±\sqrt{16+12 } }{2(3)}$

$x=\frac{-4±\sqrt{28 } }{2(3)}$

$x=\frac{-4±\sqrt{(2)(14) } }{2(3)}$

$x=\frac{-4±\sqrt{(2)(2)(7) } }{2(3)}$

$x=\frac{-4±\sqrt{2 } \sqrt{2}\sqrt{7} }{2(3)}$

$x=\frac{-4±2\sqrt{7} }{2(3)}$

$x=\frac{-4±2\sqrt{7} }{6}$

Two separate equations

$x=\frac{-4+2\sqrt{7} }{6}$

$x=\frac{2+\sqrt{7} }{3}$

$x=\frac{-4-2\sqrt{7} }{6}$

$x=\frac{2-\sqrt{7} }{3}$

7 0

3 years ago

A jar contains 26 fluid ounces of spaghetti sauce how many cups of spaghetti sauce do 4 jars contain

qaws [65]

There are 8 fluid ounces in a cup.

First multiply 26 x 4 = 104
There are 104 fluid ounces in 4 jars of spaghetti sauce.

Now divide 104 by 8.
104/8 = 13

4 jars of spaghetti sauce contain 13 cups of spaghetti sauce.

6 0

3 years ago

Work out 6 x (11- 3)

vitfil [10]

Answer:

first you do 11-3 to get 8. then you multiply 8 and 6 to get 48

8 0

3 years ago

Oksana is working to solve the equation 13x = −14x - 10.1.

Alex

Answer:

divide both sides by 7/12

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The equations 2x+7=3 and bx-10=-2 have the same solution for x. Find the value of b.

White raven [17]

Solve both equations for x:

2x+7 = 3

2x = -4

x = -2

Plug x into the equation which contains b:

b(-2) -10 = -2

-2b = 8

b = -4

Answer:

b = -4

x = -2

4 0

4 years ago