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2 years ago

What is the answer of 1x + 10 =3x

Mathematics

2 answers:

victus00 [196]2 years ago

6 0

$\bold{Heya!}$

Let's solve your equation step-by-step ~

$\sf{1x \: + \: 10 \: = \: 3x}$

Step 1: Simplify both sides of the equation.

$\sf{x \: + \: 10 \: = \: 3x}$

Step 2: Subtract <u>3x</u> from both sides.

$\sf{x \: + \: 10 \: -\: 3x \: = \: 3x \: - \: 3x}}$

$\sf{-2x \: + \: 10 \: = \: 0}$

Step 3: Subtract 10 from both sides.

$\sf{-2x \: + \: 10 \: - \: 10 \: = \: 0 \: - \: 10}}$

$\sf{-2x \: = \: 10}$

Step 4: Divide both sides by -2.

$\sf{\frac{-2}{-2} = \frac{-10}{-2}$

$\sf{x \: = \: 5}$

Hope It Helps~

malfutka [58]2 years ago

3 0

Answer:

5 is the answer because there

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Isandro and Yvette each have a calculator. Yvette starts at 100 and subtracts 7 each time. Isandro on the other hand, starts at

LenaWriter [7]

Yvette = 100-7x
Isandro = 0+3x

0+3x = 100 - 7x
0+3x+7x = 100 - 7x +7x
10x = 100
x = 10
So on the 10th time they have the same number, which is 30.

8 0

3 years ago

Find the following sums ( for letter C)

anygoal [31]

Each number in the sum is even, so we can remove a factor of 2.

2 + 4 + 6 + 8 + ... + 78 + 80 = 2 (1 + 2 + 3 + 4 + ... + 39 + 40)

Use whatever technique you used in (a) and (b) to compute the sum

1 + 2 + 3 + 4 + ... + 39 + 40

With Gauss's method, for instance, we have

S = 1 + 2 + 3 + ... + 38 + 39 + 40

S = 40 + 39 + 38 + ... + 3 + 2 + 1

2S = (1 + 40) + (2 + 39) + ... + (39 + 2) + (40 + 1) = 40×41

S = 20×21 = 420

Then the sum you want is 2×420 = 840.

6 0

2 years ago

Over the past decade, the mean number of hacking attacks experienced by members of the Information Systems Security Association

fredd [130]

Answer:

$P(X>600)=P(\frac{X-\mu}{\sigma}>\frac{600-\mu}{\sigma})=P(Z>\frac{600-510}{14.28})=P(z>6.302)$

And we can find this probability using the complement rule and the normal standard distribution and we got:

$P(z>6.302)=1-P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the number of attacks of a population, and for this case we know the distribution for X is given by:

$X \sim N(510,14.28)$