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3 years ago

A mathematical term that does not include an equal or inequality sign is called an _____. Example: 2x and 5x3y2 + 16

Mathematics

2 answers:

marishachu [46]3 years ago

3 0

Answer:An expression

Step-by-step explanation:

tia_tia [17]3 years ago

3 0

Answer:

Mathematical expressions

Step-by-step explaniation:

In mathematics there basically two methods of writing mathematical terms either as a n expression or as an equation.. Mathematical terms with the equality signs are referred to as equations,while those without the equality signs are referred to as mathematical expressions. Example of mathematical equations are

2x+3y=4, 5g+4h=2

While for expressions we such terms as 2x, 5xy+6z.

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What is the probability that a randomly selected member of a normally distributed population will lie more than 1.8 standard dev

Helen [10]

Answer:

$P(X> \mu +1.8\sigma)=P(\frac{X-\mu}{\sigma}>\frac{\mu +1.8\sigma-\mu}{\sigma})=P(Z>1.8)$

And we can find this probability using the complement rule:

$P(z>1.8)=1-P(z$

And using the normal standard distirbution table or excel we got:

$P(z>1.8)=1-P(z$

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 variable if interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(\mu,\sigma)$

We are interested on this probability

$P(X>\mu +1.8 \sigma)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X> \mu +1.8\sigma)=P(\frac{X-\mu}{\sigma}>\frac{\mu +1.8\sigma-\mu}{\sigma})=P(Z>1.8)$

And we can find this probability using the complement rule:

$P(z>1.8)=1-P(z$

And using the normal standard distirbution table or excel we got:

$P(z>1.8)=1-P(z$

5 0

3 years ago

If f(x) = 3x-5 and g(x) = 4x^2 + 2x -8 evaluate f(x) x g(x)

Vikentia [17]

(3x-5)*(4x^2+2x-8)

=12x^3−14x^2−34x+40

3 0

3 years ago

How many video games can you buy with $162 if one game $18.find equation

Umnica [9.8K]

The equation for this problem can be written as 18x=162. X would represent the number of games bought. You do the inverse operation of multiplying by 18 to both sides and you get the answer as x=9. 9 is the number of games bought with 162 dollars.

3 0

3 years ago

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The rectangle below has sides measuring 6cm and 5 cm. What is the area of this rectangle<br>

sleet_krkn [62]

Answer:30 cm

Step-by-step explanation:

Area is found by two side lengths multiplied together, the two side lengths in the problem are 5cm and 6cm, 5 times 6 is 30, (plus add the measurement) which is 30 cm. :))

4 0

2 years ago

11. Which of the following points is on the

Alona [7]

Step-by-step explanation:

because it's is very important

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3 years ago

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