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makkiz [27]
2 years ago
9

(-6,1) after a translation of (x-2y)

Mathematics
1 answer:
zysi [14]2 years ago
5 0

Answer:

(-8,1)

Step-by-step explanation:

Imma assume you meant (x-2, y)

x coordinate becomes -6-2=-8

y coordinate stays the same

so the image is (-8,1)

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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 weights of bags of ready-to-eat salad are normally distributed with a mean of 290 grams and a standard deviation of 10 grams
pentagon [3]
290-10=280

280 is one standard deviation below.
All that are above mean is 50%.
One standard deviation below is 34%.
50%+34%=84%  all of these bags weigh more than 280 g.
So,
100%-84%=16%  should be bags that are less than 280 g.

Answer is b) 16 %.

5 0
3 years ago
Write -0.34 as a fraction in simplest form?
ra1l [238]

Answer:

-34/100 is the fraction in simplest form

5 0
2 years ago
Read 2 more answers
If the leg of a 45-45-90 triangle is 20in long, what is the perimeter of the triangle​
Sindrei [870]

Yo sup??

Lenght of two side will be equal to 20 in as its an isoceles triangle.

The third side will be

x^2=b^2+h^2    (by pythagoreas theorem)

=9^2+9^2

x=9√2 in

Therefore the perimeter is = 9+9+9√2

=9√2(√2+1) in

Hope this helps.

8 0
3 years ago
The area of greenland is 840,000 square miles. what is this number in scientific notation?
inna [77]
The answer is 8.4x10^5
7 0
3 years ago
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