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3 years ago

What are the solutions of 4x - 9 2?

2 answers:

6 0

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andrey2020 [161]3 years ago

4 0

Answer:

x=2.75

Step-by-step explanation:

4x - 9=2

4 * 2.75=11

11 - 9=2

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Can someone help, "Solve for x and y when 3y=12 and x+y = 6"

Lapatulllka [165]

Answer:

x=2

y=4

3 times 4 equals 12 and 2 plus 4 would equal six

7 0

3 years ago

Tju [1.3M]

Answer:

Step-by-step explanation:

Rationalize the denominator of b. So, multiply the numerator and denominator by $\sqrt{x}$

$b = \frac{(1-2\sqrt{x}) *\sqrt{x}}{\sqrt{x}*\sqrt{x} }=\frac{1*\sqrt{x} -2\sqrt{x} *\sqrt{x} }{\sqrt{x} *\sqrt{x} }\\\\=\frac{\sqrt{x} -2x}{x}\\$

Now, find a +b

$a +b = \frac{2x+\sqrt{x} }{x}+\frac{\sqrt{x} -2x}{x}\\\\=\frac{2x+\sqrt{x} +\sqrt{x} -2x}{x}$

Combine like terms

$= \frac{2x-2x+\sqrt{x} +\sqrt{x} }{x}\\\\=\frac{2\sqrt{x} }{x}$

Now find (a + b)²

(a +b)² = $(\frac{2\sqrt{x} }{x})^{2}$

$= \frac{2^{2}*(\sqrt{x} )^{2}}{x^{2}}\\\\= \frac{4* x}{x^{2}}\\\\= \frac{4}{x}$

Hint: $\sqrt{x} *\sqrt{x} =\sqrt{x*x}=x$

5 0

2 years ago

140 equals the sum of k and 38

Mandarinka [93]

Answer:

102

Step-by-step explanation:

140-38=102

5 0

2 years ago

A family eats at a restaurant . The bill is$ 42 dollars . The family leaves a tip and spends $ 49.77 dollars .

bagirrra123 [75]

Answer:

Since you didnt include an actual question im guessing you are looking for the tip amount which would be $ 7.77

Step-by-step explanation:

49.77-42=7.77

3 0

3 years ago

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B) Select the equation with roots 0 and 3

Firlakuza [10]

Answer:

Your answer would be C.

Step-by-step explanation:

4 0

2 years ago

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