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2 years ago

Two numbers have a sum of 4, and the sum of their reciprocals is 8.

Mathematics

1 answer:

Leno4ka [110]2 years ago

6 0

Answer:

Can you explain better?

Step-by-step explanation:

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The quotient of a number y and 2.<br> A. 2/y<br> B. 2(y)<br> C. 2 + y<br> D. y/2

Virty [35]

Answer:

The answer to your problem is B.

7 0

2 years ago

1/27^-x=81^2x+2 find x

Umnica [9.8K]

Answer:

Step-by-step explanation:

and

, so this equation can also be written as

(

)

Since the bases are now the same, we can equate exponents to get

so that

(technically this equating of exponents requires the fact that exponential functions (with base not equal to 1) are one-to-one functions).

(do u understand?)

7 0

2 years ago

Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10

jenyasd209 [6]

Answer:

A. Move the decimal point to the left

Step-by-step explanation:

Given that:

The scientific notation = 10⁻¹⁰

Let recall;

That the standard notation usually took the form of an inverse:

For example;

Let say 10⁻¹ will be $\dfrac{1}{10}$ in scientific notation;

SO, $\dfrac{1}{10} = 0.1$

Now; we are given 10⁻¹⁰ as a scientific notation,

To standard notation, we get:

$10^{-10} = \dfrac{1}{100}$

= 0.01

Thus, it is true to say that the decimal point will be moved to the left side when converting a number from scientific notation to standard notation if the power of 10 is -10.

4 0

2 years ago

2x^2+5x+3/x^2-3x-4 divided by 4x^2+2x-6/x^2-8x+16

Masja [62]

Answer: $\frac{x-4}{2x-2}$

Step-by-step explanation:

$\frac{2x^2+5x+3}{x^2-3x-4}$ divided by $\frac{4x^2+2x-6}{x^2-8x+16}$ is the same thing as multiplying $\frac{2x^2+5x+3}{x^2-3x-4}$ by $\frac{x^2-8x+16}{4x^2+2x-6}$ .