How would you solve the equation -13=-5║n║

What is p supposed to be in this equation?

Tatiana [17]

P is just a variable in this equation

3 0

3 years ago

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What values of x is log (2x-5) valid

sergiy2304 [10]

Answer:

To solve this you must first know how Log works.

When we say log1000 of base 10

Or

log1000=3

What we actually say is for the power 3(value on RHS) of 10(the base of log) we get 1000(the value on which log is performed).

So log2x=−5 (i am assuming base 10 since it is simple algebra) means that

2x=10−5

x=10−5/2

Do this simple calculation and you have it. If anything is unclear/incorrect feel free to comment.

The question is not written properly, so I will give the answer(s) I think would be suitable.

If you were trying to solve this

log2x=−5

⟹x=2−5

⟹x=132

But if you were trying to solve this

log2x=−5

⟹log102x=−5

⟹2x=10−5

⟹x=12×105=1200000

Step-by-step explanation:

Hope it is helpful...

4 0

3 years ago

Theo correctly answered 40 out of 50 questions on his spelling quiz. What percent of the questions did theo answer correctly? Ex

Ugo [173]

Theo got an 80% on the quiz because you multiply to get a equivalent fraction since a hundred is a whole of a percent. So basically, the percent is 80% and the decimal is 0.80.

Hope it helps!

5 0

3 years ago

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Determine whether the quantitative variable is discrete or continuous. Depth of the ocean floor Is the variable discrete or cont

Vesna [10]

Answer:

B. The variable is continuous because it is not countable.

Correct, from the definition about of continuous data we see that is a random variable is continuous then it can't be countable.

Step-by-step explanation:

Previous concepts

A discrete random variable "has a countable number of possible values" in a domain defined. So then the possible values for these types of random variables are the integers.

A continuous is a random variable "where the data can take infinitely many values" that means that can take values from the rational with decimals. Ans is not countable.

Solution to the problem

Let's analyze one by one the possible options:

A. The variable is discrete because it is countable.

False, the depth of the ocean is a continuous random variable since we can have for exampe a depth of 1200.56 mi and we can't express this as a discrete random variable.

B. The variable is continuous because it is not countable.

Correct, from the definition about of continuous data we see that is a random variable is continuous then it can't be countable.

C. The variable is discrete because it is not countable.

False, the depth of the ocean is a continuous random variable since we can have for exampe a depth of 504.67 Km and we can't express this as a discrete random variable.

D. The variable is continuous because it is countable.

False the variable is continuous but cannot be countable since that's the opposite from the definition of continuous random variable.

6 0

3 years ago

I ALSO NEED HELP ON THIS

Inessa05 [86]

Answer:

Step-by-step explanation:

You need to know three things for this. First, the equation of a line inslope intercept form y=mx+b. m is the slope (rise over run) and b is the y intercept, or what happens when x equals 0. If either of these concepts are confsing let me know.

y=mx+b is going to be how we write the final answer, so we want to know how to fund m and b. b actually is found in the final step automatically, but m we have to use the points.

m is found with the equation (y2-y1)/(x2-x1). If this looks confusing it really isn't. (x1,y1) refer to one of the points you are givenand (x2,y2) refer to another. You are given points, but let's just try two of them and see if the third also fits. If it DOESN'T then we have to redo this or find another way, so keep that in mind. so, lets say (x1,y1) is (0,0) and (x2,y2) is (3,5). Remember, we could have made either one (-5,-25) or switched which we assigned. Also, it's worth noting if you ever have a point with one zero or especially two, that makes other parts easier.

Now the actual calculation.

(y2-y1)/(x2-x1)

(15-0)/(3-0)

I will leave simplifying for you. Remember, this is the slope, or m. Now, the third piece of the puzzle is what is called point slope form. This is what automatically gets you that y intercept. It's another case of plugging in numbers. y - y1 = m(x - x1). You are going to plug in m (the slope) and any of the three point's coordinates. You just have to make sure you plug inthe same y that goes with x. so if you plug -5 in for x1 you need to plug in -25 in for y1. Here's where (0,0) is super helpful. But I want you to try each of the points and see what happens.

After you plug it in you are going to want to solve for just plain old y. i will show you the calculation.

y - y1 = m(x - x1) First distribute the m

y - y1 = m*x - mx1 Then add y1 to both sides

y = mx - mx1 + y1

Now, we want y = mx + b. Well, if we have -mx1 + y1 equal to be then we have it, so we're done!

Again, you should try all three points in the last step just to see they make the same equation, and then use the final equation and plug in each x value to see if you get the same y value. It's all super valuable practice. And of course let me know if there's something you don't understand.

4 0

3 years ago