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2 years ago

What is the value of x? 6x – 2 (x + 4) = 12

Mathematics

1 answer:

Nadusha1986 [10]2 years ago

8 0

let's solve for x :

$6x - 2(x + 4) = 12$

$6x - 2x - 8 = 12$

$4x = 12 + 8$

$x = \dfrac{20}{4}$

$x = 5$

hence value of x = 5

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Approximately how many times greater is 6 x 10^-5 than 5 x 10^-9

8_murik_8 [283]

Answer: $6 \times 10^{-5}$ is $1.2 \times 10^4.$ times greater than $5 \times 10^{-9}$ .

Step-by-step explanation:

We are given two numbers.

First number : $6 \times 10^{-5}$ .

Second number : $5 \times 10^{-9}$ .

In order to find how many times $6 \times 10^{-5}$ is greater than $5 \times 10^{-9}$ , we need to divide first number by second number.

Therefore,

$6 \times 10^{-5}$ ÷ $5 \times 10^{-9}$

or $\frac{6 \times 10^{-5}}{5 \times 10^{-9}}$

First we would divide 6 by 5.

On dividing 6 by 5, we get 1.2.

Now, we would divide 10^-5 by 10^-9.

In order to divide them, we can apply quotient rule of exponents $\frac{a^m}{a^n} =a^{m-n}$ .

We get

$\frac{10^{-5}}{10^{-9}} = 10^{-5-(-9)} = 10^{-5+9} = 10^4$ .

Therefore,

$\frac{6 \times 10^{-5}}{5 \times 10^{-9}}$ = $1.2 \times 10^4.$

So, we could say finally $6 \times 10^{-5}$ is $1.2 \times 10^4.$ times greater than $5 \times 10^{-9}$ .

8 0

3 years ago

Please help I need to solve this problem and I just need the answer little bit of explanation too

bija089 [108]

Answer:

-1288

Step-by-step explanation:

replace x with -7 because (x= -7) and the rest is a simple maths

3 0

3 years ago

(8, -1) and slope m= -3 for slope intercept

ella [17]

Answer:

Slope-intercept Form: $y = -3x + 16$

Step-by-step explanation:

Point-slope: $y- y_1 = m (x - x_1)$

$y + 1 = -3(x - 8)\\y \frac{+8}{-8} = -3x + \frac{+24}{-8} \\y = -3x + 16$

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2 years ago

13. Write a few sentences describing what you have learned about the mean length of the population of 268 words in the Gettysbur

alexira [117]

You can obtain information about the mean population by taking a random sample of it and taking the average of that sample. The Law of big Numbers says that the bigger the sample, the more likely we will be closer to the real mean value. In other words, the margin of error is less likely to be big.

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2 years ago

What are the roots of the polynomial equation x^2-x72=0

Tom [10]

I hope this helps you

x^2-x-72=0

x -9

x +8

(x-9)(x+8)=0

x=9

x= -8

8 0

3 years ago

What is the value of x? 6x – 2 (x + 4) = 12​

What is the value of x? 6x – 2 (x + 4) = 12