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3 years ago

Which mathematical property is demonstrated? if x= -3 and -3 =z,then x=z

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

Basic Properties of Real Numbers:

Given that X, Y, Z, A, B, C, and D are real numbers, then the following are true:

Commutative Property of Addition: X+Y = Y+X

Commutative Property of Multiplication: XY = YX

Associative Property of Addition: (X+Y) + Z = X + (Y + Z)

Associative Property of Multiplication: ( X Y ) Z = X ( Y Z )

Additive Identity: For any real number X, X+0 = X where 0 is the additive identity

Additive Inverse: For any real number X, there exists -X such that X+(-X) = 0

Multiplicative Identity: For any real number X, 1●X = X where 1 is the multiplicative identity

Multiplicative Inverse: For any real number X where X≠0, there exists 1/X such that X ●(1/X) = 1

Zero Product Law: If XY = 0, then X=0 or Y=0 or both X and Y = 0

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If an outcome measure is normally distributed, this means that

Inessa [10]

A normally distributed result means that when the data is plotted on a graph, we can actually see a bell shaped curve. That highest frequency or peak is centered on the average value. Because it is shaped like this, we can say that:

most scores are around the average with some scores being lower or higher

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3 years ago

First, Khianna must walk from the front gate to the Ferris wheel. This distance is 2.5 cm on Khianna's map. How far is the actua

spin [16.1K]

Okie doke. 1cm on the map equals 500 meters. The distance from the gate to the ferris wheel on the map is 2.5cm. To find the actual distance, multiply the length on the map by the distance per centimeter. 500 * 2.5 is 1,250. The actual distance is 1,250 meters.

Note: When it comes to problems like these, you must always multiply the distance on the map by the scale unit (in other words, the actual distance on how far it is per the smaller unit).

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3 years ago

Solve the equatuon x/2-(2/(x+1))=1 x=?

Snezhnost [94]

$\frac{x}{2}-\frac{2}{x+1}=1$

We have 2 denominators that we need to get rid of. Whenever there are the denominators, all we have to do is multiply all whole equation with the denominators.

Our denominators are both 2 and x+1. Therefore, we multiply the whole equation by 2(x+1)

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]$

Then shorten the fractions.

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]\\x(x+1)-2(2)=1(2x+2)$

Distribute in all.

$x^2+x-4=2x+2$

We should get like this. Because the polynomial is 2-degree, I'd suggest you to move all terms to one place. Therefore, moving 2x+2 to another side and subtract.

$x^2+x-4-2x-2=0\\x^2-x-6=0\\$

We are almost there. All we have to do is, solving for x by factoring. (Although there are more than just factoring but factoring this polynomial is faster.)

$(x-3)(x+2)=0\\x=3,-2$

Thus, the answer is x = 3, -2

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3 years ago

Help me pls! PLS PLS PLS I NEED IT 20 points options are x, x^9, x^4, and x^6

marishachu [46]

Answer:

x^4

Step-by-step explanation:

The expression can be simplified to (x^2)^2. Using an exponent rule, you multiply the two exponents together to get 4. The answer is x^4

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3 years ago

HELP PLEASE!

Citrus2011 [14]

A table can be used to find the rate of change by giving you a visual representation of how the operation changes over time for example in the link i'm about to post you can see how much more money is earned as more cars are washed, it is showing how much money is being made OVER TIME, hope this helps :)

now to answer your second question, say you would like to know how many miles Tracy ran over a course of 2 hours, the x axis would be the miles and the y axis would be the time, then you would plot the different points on the graph showing the rate at which she is running
'
to answer your last question a linear interval would be a sequence of numbers that when places on a number line they will form a line, a nonlinear interval is a sequence of numbers that don't make a line because there are inequities meaning the numbers in the sequence are all over the place

Hope this helps and i will post the pictures so you can have a visual representaion

6 0

3 years ago

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