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lys-0071 [83]
3 years ago
13

Please help me lol (quadratics unit on khan)

Mathematics
1 answer:
EastWind [94]3 years ago
5 0

Answer:

(2-x)^2 sorry if that’s wrong

Step-by-step explanation:

sorry

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Prove that the difference between squares of consecutive even numbers is always a multiple of 4
jasenka [17]

Answer:

Answer: Proved: the difference between squares of consecutive even numbers is always a multiple of 4. ... From the results above, we can see that 12, 20, and 28 are multiples of 4. Therefore, the difference between squares of consecutive even numbers is always a multiple of 4.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally
sasho [114]

Answer:

a) P(X

P(z

b) P(X>7.0)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z1.47)

P(z>1.47)=1-P(z

c)  P(3

P(-0.882

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".  

Part a

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

X \sim N(4.5,1.7)  

Where \mu=4.5 and \sigma=1.7

We are interested on this probability

P(X

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

And we can find this probability using excel or the normal standard table:

P(z

Part b

We are interested on this probability

P(X>3.0)

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>7.0)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z1.47)

And we can find this probability using excel or the normal standard table:

P(z>1.47)=1-P(z

Part c

P(3

And we can find this probability using excel or the normal standard table liek this:

P(-0.882

3 0
3 years ago
In a binomial experiment, if there are two possible outcomes and P(S) = 0.36, what is P(F)?
vampirchik [111]

Answer:

D. 0.64

Step-by-step explanation:

The reason I got this answer is because the problem tells us that there is a success rate of .36, so you would subtract .36 from 1 to get .64. The success rate and failure rate should always be equal to 1.

8 0
3 years ago
Can someone help me with this and make sure to explain (8th grade math)
Naily [24]
<h2><u>Answer:</u></h2><h2> \boxed{439.82}</h2><h2 /><h2><u>Solution Steps:</u></h2>

____________________________

<h3>1.) To find lateral surface the formula is: </h3>
  • 2πr × h
  • 2π7 × 10
<h3 /><h3>2.) Solve:</h3>
  • 2π7 × 10=439.822972
<h3 />

____________________________

<h3 />

8 0
3 years ago
Please help me I will mark Brainliest if right
Eva8 [605]
0
um when the snow storm hasnt started there is no snow on the ground
8 0
3 years ago
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