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Sidana [21]
2 years ago
8

PLEASEE HELPP MEEE I WILL GIVE BRAINLIEST

Mathematics
1 answer:
Zarrin [17]2 years ago
6 0

Answer:This is basic multiplying

Step-by-step explanation: so at the second column starting from up to down you can tell that 5 multipyed 24 is 120! so going up is multiplying and gown down is dividing

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Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ=105 and a standard deviation sigma eq
Over [174]

The probability that a randomly selected adult has an IQ less than

135 is 0.97725

Step-by-step explanation:

Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ = 105 and a standard deviation sigma equals σ = 15

We need to find the probability that a randomly selected adult has an IQ less than 135

For the probability that X < b;

  • Convert b into a z-score using z = (X - μ)/σ, where μ is the mean and σ is the standard deviation
  • Use the normal distribution table of z to find the area to the left of the z-value ⇒ P(X < b)

∵ z = (X - μ)/σ

∵ μ = 105 , σ = 15 and X = 135

∴ z=\frac{135-105}{15}=2

- Use z-table to find the area corresponding to z-score of 2

∵ The area to the left of z-score of 2 = 0.97725

∴ P(X < 136) = 0.97725

The probability that a randomly selected adult has an IQ less than

135 is 0.97725

Learn more:

You can learn more about probability in brainly.com/question/4625002

#LearnwithBrainly

6 0
2 years ago
Amy has three pieces of string of length 16 cm, 56 cm and 24 cm respectively. For an art project, she wants to cut the three len
____ [38]

Answer:

<em>8cm</em>

Step-by-step explanation:

Given  three pieces of string of length 16 cm, 56 cm and 24 cm respectively. To get the the greatest length that each piece of string can be if she wants to cut the three lengths of string into smaller pieces such that all the pieces are of equal length, with no string left over, we will have to find the greatest common factor for the three lengths

16 = 2 * 8

56 = 7 * 8

24 = 3 * 8

Since 8 is common to all the factors, hence the greatest common factor is 8.

<em>Hence the greatest length that each piece of string can be, in cm is 8cm</em>

6 0
2 years ago
IM SO LOST PLEASE HELP
LiRa [457]
Check the picture below.

\bf \textit{lateral area of a cone}\\\\&#10;LA=\pi r\stackrel{slant-height}{\sqrt{r^2+h^2}}~~&#10;\begin{cases}&#10;LA=539\pi \\&#10;r=49&#10;\end{cases}\implies 539\pi =\pi 49\sqrt{r^2+h^2}&#10;\\\\\\&#10;\cfrac{539\pi }{49\pi }=\sqrt{r^2+h^2}\implies 11=\sqrt{r^2+h^2}

3 0
3 years ago
Pls hurry!!!!!!!<br><br> Factor 60x−12y<br> . Explain how you found your answer.
ruslelena [56]

Answer:

12(5x-y)

Step-by-step explanation:hope this help

8 0
3 years ago
Line M passes through point (3,1) and is perpendicular to the line of the equation y=3x+4. Which equation describes the graph of
zheka24 [161]

Answer:

y = -1/3x + 2

Step-by-step explanation:

The gradient of the given line is 3 because (y = mx +c where m is the gradient)

Therefore, to find the gradient of the perpendicular line (at 90 degrees), you need to find the negative reciprocal.

The negative reciprocal of 3 is -1/3 because imagine if 3 = 3/1, to get the reciprocal, you flip it, and to get the negative, you just flip the sign.

Now we know that Line M is y = -1/3x + c, we need to find the y-intercept.

To do this, just input the point (3,1) into y = -1/3x + c, to get c. This is because we know (3,1) is on the line from the question.

So it would be 1 = (-1/3 x 3) +c

Which would be 1 = -1 +c

And so c = 2

Put everything together and you get y = -1/3x + 2

8 0
3 years ago
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