1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DochEvi [55]
3 years ago
14

Expand and simplify (x-6)(x+2)

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0
Apply the FOIL method: <span>(a+b)(c+d)=ac+ad+bc+bd 

</span>x^2+2x-6x-12&#10; 

<span>Simplify
</span>
x^2-4x-12&#10;
maw [93]3 years ago
4 0
I hope this helps you

You might be interested in
An Epson inkjet printer ad advertises that the black ink cartridge will provide enough ink for an average of 245 pages. Assume t
Neko [114]

Answer:

35.2% probability that the sample mean will be 246 pages or more

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 245 \sigma = 15, n = 33, s = \frac{15}{\sqrt{33}} = 2.61

What the probability that the sample mean will be 246 pages or more?

This is 1 subtracted by the pvalue of Z when X = 246. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{246 - 245}{2.61}

Z = 0.38

Z = 0.38 has a pvalue of 0.6480.

1 - 0.6480 = 0.3520

35.2% probability that the sample mean will be 246 pages or more

4 0
3 years ago
Special precision bolts are made by another machine. These are for jobs that require more exact measurements. The bolts must be
klio [65]

The solutions of the inequality is 7.99<x<8.01. I think this solutions means the radius of hole in the bolt or something along that, but I'm not sure.

3 0
2 years ago
What are the zeros of the function f(x) = (3x^2 + 9x + 6) / (3x - 6) ?
cricket20 [7]
3x^2 + 9x + 6 = 0
3x^2 + 3x + 6x + 6 = 0
3x(x + 1) + 6(x + 1) = 0
(3x + 6)(x + 1) = 0
3x + 6 = 0 and x + 1 = 0
3x = -6 and x = -1
x = -2 and x = -1
6 0
3 years ago
ZABC and ZDEF are complementary angles.
Marat540 [252]

Answer:

x = 36

Step-by-step explanation:

Complementary angles add to 90 degrees

54+x = 90

x = 90-54

x = 36

4 0
2 years ago
Read 2 more answers
The graph of which function has a y-intercept of 3? On a coordinate plane, a parabola opens up. It goes through (negative 3, 3),
mixer [17]

Answer:

It is A

Step-by-step explanation:

The guy below is wrong because I got a 100 on the quiz on Edge.

4 0
2 years ago
Other questions:
  • Jared uses 24 tiles to cover the top of his desk. Of the 24 tiles, ⅜ are blue. How many of the tiles are blue?
    6·1 answer
  • 16/ 1/2 - |-4| = 8+3
    10·1 answer
  • Which is the best estimate of the sum of 56.78+5.06
    14·1 answer
  • The quadratic formula gives which roots for theequation 3x² + 3x =2?
    12·2 answers
  • Find the solution set x^2+2x-8=0 separate the two answers with a comma
    8·1 answer
  • -2 (-3x + 3) + 2x = 58
    15·1 answer
  • Can somebody solve 2 and 3 for me?
    9·2 answers
  • work out the area of a circle with diameter 1.8cm. Take <img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" al
    11·1 answer
  • Assume y=5x and dx/dt = 2 find dy/dt
    9·1 answer
  • Hey everyone hru and i hope u all are doing good
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!