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3 years ago

What is the value of x? In a equation

Mathematics

2 answers:

ivann1987 [24]3 years ago

5 0

It's determined by the information given to you in a equation.

kvasek [131]3 years ago

4 0

It could be any number

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Simplify √49 + [√81 - x(9x = 14)]

eimsori [14]

$\longrightarrow{\green{- 9 {x}^{2} + 14x + 16}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}$

$\sqrt{49} + [ \sqrt{81} - x \: (9x - 14) ] \\ \\ = \sqrt{7 \times 7} + [ \sqrt{9 \times 9} - 9 {x}^{2} + 14x] \\ \\ = \sqrt{( {7})^{2} } + [ \sqrt{ ({9})^{2} } - 9 {x}^{2} + 14x ] \\ \\ (∵ \sqrt{ ({x})^{2} } = x ) \\ \\ = 7 + (9 - 9 {x}^{2} + 14x) \\ \\ = 7 + 9 - 9 {x}^{2} + 14x \\ \\ = - 9 {x}^{2} + 14x + 16$

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}$

3 0

3 years ago

If f(x) = 6x-4 what is the value of f(8)

Vinvika [58]

Answer:

f(8) = 44

Step-by-step explanation:

f(x) = 6x-4

Let x = 8

f(8) = 6(8) - 4

Multiply

= 48 -4

= 44

8 0

2 years ago

Read 2 more answers

The radius of a circle is 8 inches. What is the circle's area?

sveta [45]

Answer:

200.96

Step-by-step explanation:

3.14 x (8x8) = 200.96

8 0

2 years ago

Number 、

Sav [38]

Y = 15x + 50
85 = 15x + 50
35 = 15x
X = 2.3333
X= 2 hours

6 0

3 years ago

Match the expressions 21/25 60% 13/20 84% 2/5 75% 65% 3/4 3/5

katrin [286]

Answer:

21/25 ---> 84%

13/20 ---> 65%

3/5 ---> 60%

3/4 --->75%

2/5 ---> 40%

8 0

2 years ago