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2 years ago

If 1/x + 1/3х = 5, what is the value of 3x/4

Mathematics

1 answer:

marusya05 [52]2 years ago

6 0

Answer:

Step-by-step explanation:

$\frac{1}{x}+\frac{1}{3x}=5\\\\\frac{1*3}{x*3}+\frac{1}{3x}=5\\\\\frac{3}{3x}+\frac{1}{3x}=5\\\\\frac{4}{3x}=5\\\\4=5*3x\\\\4=15x\\\\\frac{4}{15}=x$

x = 4/15

$\frac{3}{4}x=\frac{3}{4}*\frac{4}{15}\\\\=\frac{1}{5}$

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Find the value of x that will make A||B. 5x + 9 A B 6x-2 X = [?] Enter

givi [52]

Answer:

$x = 11$

Step-by-step explanation:

Given

Parallel lines A and B

Required

Find x

For A and B to be parallel, then 5x + 9 and 6x - 2 are alternate interior angles

And alternate interior angles are always equal

This means that

$5x + 9 = 6x - 2$

Collect like terms

$5x - 6x = -2 -9$

$-x = -11$

Multiply both sides by -1

$-1 * -x = -11 * -1$

$x = 11$

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3 years ago

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What is the frequency of yellow

Zina [86]

Answer:

5.131 × 10¹⁴ Hz

Step-by-step explanation:

Planck relation

$\large\boxed{E = hf}$

where:

E = Energy of the photon (J).
h = Planck's constant (J · s).
f = frequency of light produced (Hz).

Given values:

E = 3.4 × 10⁻¹⁹ J
h = 6.626 × 10⁻³⁴ J · s

Substitute the given values into the formula and solve for f:

$\implies 3.4 \times 10^{-19}=(6.626 \times 10^{-34})f$

$\implies f=\dfrac{3.4 \times 10^{-19}}{6.626 \times 10^{-34}}$

$\implies f=\dfrac{3.4}{6.626} \times \dfrac{10^{-19}}{10^{-34}}$

$\implies f=0.5131\times 10^{(-19-(-34))}$

$\implies f=0.5131 \times 10^{15}$

$\implies f=5.131 \times 10^{14}$

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10 months ago

I need help please #23

Anettt [7]

The answer of question 23 is 24

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2 years ago

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zaharov [31]

Step-by-step explanation:

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2 years ago

What is 23/8 as a decimal?

trasher [3.6K]

To write 23/8 as a decimal you have to divide numerator by the denominator of the fraction.
We divide now 23 by 8 what we write down as 23/8 and we get 2.875 

And finally we have: 
23/8 as a decimal equals 2.875

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3 years ago

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