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2 years ago

PLEWSE HELP ME WITH THIS!!!!!!

Mathematics

1 answer:

Aleonysh [2.5K]2 years ago

4 0

Answer:

Step-by-step explanation:

Current coordinate of R : ( 1,5 )

Applying translation with rule (x,y) --> (x+1 , y-1)

Coordinate after translation ( 1 , 5 ) ==> ( 1 + 1 , 5 - 1 ) ==> ( 2 , 4 )

applying dilation with scale factor of 3 , to apply dilation multiply x and y values by scale factor which is 3

Coordinate after dilation ( 2 , 4 ) ==> ( 2 × 3 , 4 × 3 ) ==> ( 6 , 12 )

The final coordinate is ( 6 , 12 )

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What is the greatest common factor of 20x6y+40x4y2−10x5y5 ?

mestny [16]

The greatest common factor: 20x^6y 40x^4y^2 10x^5y^5 is 10x^4y.
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3 years ago

A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data

LuckyWell [14K]

Answer:

(25.53, 37.87): 95% CI

(23.59, 39.81): 99% CI

Step-by-step explanation:

The margin of error of a confidence interval is given by:

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.

In this question:

The narrower C.I. is the 95%, and the wider is the 99%. So

(25.53, 37.87): 95% CI

(23.59, 39.81): 99% CI

4 0

3 years ago

The amount of time needed for a certain machine to process a job is a random variable with mean EXi = 10 minutes and Var(Xi)=2 m

lana66690 [7]

Answer:

0.98732

Step-by-step explanation:

Given that :

Mean = 10 minutes

Variance = 2 minutes

For less than equal 40 jobs

Mean (m) = 40 * 10 = 400 minutes

Variance = 2 * 40 = 80 minutes

Standard deviation (s) = √variance = √80

Converting hours to minutes

X = 60 * 7 = 420 minutes

P(X≤ 420) :

Z = (x - m) / s

P(X≤ 420) :

Z = (420 - 400) / √80

Z = 20 / √80 = 20 / 8.9442 = 2.236

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3 years ago

Evaluate the expression: 5 + (1 + 1)3 × 2.

Free_Kalibri [48]

5 + (1 + 1)3 × 2

5 + (2) 3 x 2

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5 + 12

5 0

2 years ago

Read 2 more answers

225/400 in simplest form

Natali5045456 [20]

It is 9/16

divide bot by 25.

3 0

3 years ago

Read 2 more answers