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2 years ago

Which triangle below represents a 90° rotation about the origin?

Mathematics

1 answer:

spin [16.1K]2 years ago

8 0

Answer:

Because of the ratio in 2 becomes 3-1 is 2

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Look at pic will mark brainilest

densk [106]

Answer:The first one 18in.2

Step-by-step explanation:

5 0

3 years ago

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Triangle ELM is rotated - 90 degrees about the origin. Draw the image of this rotation.

Fiesta28 [93]

Answer:

△E'L'M'

Step-by-step explanation:

-90° rotation = 270° rotation

Which maps (x,y) onto (y,-x)

L' (2,-3)

M' (7,-6)

E' (-3,-7)

5 0

3 years ago

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A nut-raisin mix costs $5.26 a pound. Rashid buys 15.5 pounds of the mix for a party. Rashid’s estimated cost of the nut-raisin

olchik [2.2K]

15.5 times 5.26 is 81.53 and 80 is closest to that so D

5 0

3 years ago

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What is the horizontal asymptote of f(x) = (2x+1)/ (x^2-4x+3) +2

evablogger [386]

Answer:

x=3 and x=1

Step-by-step explanation:Horizontal asymptote will occur at x=3 and x=1.

You have to factorize the denominator and find the zeroes of the denominator. That is how you find out the horizontal asymoptote.

6 0

3 years ago

A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 13.6

dimaraw [331]

Answer:

The confidence interval is $13.4< \mu < 13.8$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 13.6$

The standard deviation is $\sigma = 1.9$

The sample size is $n = 189$

given that the confidence level is 85% then the level of significance is mathematically represented as

$\alpha = (100 - 85 )\%$

$\alpha = 0.15$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table the value is

$Z_{\frac{\alpha }{2} } = 1.44$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma}{\sqrt{n} }$

=> $E = 1.44* \frac{1.9}{\sqrt{189} }$

=> $E = 0.1990$

The 85% confidence interval is mathematically represented as

$\= x - E < \mu$

=> $13.6- 0.1990 < \mu < 13.6+ 0.1990$

=> $13.4< \mu < 13.8$

5 0

3 years ago