Question number 9 is what I want to ask

Reflecting a figure over the x-axis and then reflecting that figure over the y-axis is the same as applying what transformation?

marysya [2.9K]

Answer:

Another transformation that can be applied to a function is a reflection over the x– or y-axis. A vertical reflection reflects a graph vertically across the x-axis, while a horizontal reflection reflects a graph horizontally across the y-axis.

6 0

3 years ago

An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 4.

Leno4ka [110]

Answer:

P(4 non-work-related e-mails)=0.1933

P(7 or more non-work-related e-mails)=0.1442

P(3 or less non-work-related e-mails)=0.3771

Step-by-step explanation:

A Poisson distribution is useful to measure the probability of a number of events in a given period, in this problem, receiving a non-work-related e-mail would be the event and an hour would be the period of time.

Its probability mass function is $f(k; \lambda) = P(x=k) = \frac{\lambda^k e^{-\lambda}}{k!}$ , being k the number of events and λ how many sucesses (events) are per period of time (4.3 in this case)

First, we calculate what is the probability of receiving exactly 4 e-mails:

$f(k; \lambda) =P(k=4) =\frac{4.3^4 e^{-\4.3}}{4!}=0.1933$

As k is a discrete variable, to know the joint probability of different number of events we add the probability of each value.

The probability of receiving 7 or more is the sum of P(7), P(8), ..., P(∞):

$P(k\geq 7 ) =\sum_{i=7}^{\infty}\frac{4.3^i e^{-\4.3}}{i!}=0.1442$

Last, the probability of receiving 3 or less is the sum of P(0), P(1), P(2) and P(3):

$P(k\leq3 ) =\sum_{i=0}^{3}\frac{4.3^i e^{-\4.3}}{i!}=0.3771$

3 0

3 years ago

Least to greatest was she write and why ❓

oksano4ka [1.4K]

She is wrong because -2 1/3 is smaller than -1.4. The bigger the negative number is, the smaller it is.

6 0

3 years ago

List four of the five physical features of being a good listener.<br> WRITER

IceJOKER [234]

1. Sitting or stand attentively.

2. Watching the speaker. You are less likely to daydream if you maintain eye contact with the speaker.

3. Maintaining a quiet and alert appearance when listening.

4. Responding with feedback when appropriate.

3 0

3 years ago

Read 2 more answers

HELP ME PLEASE ASAP<br> IT IS A CLOCK PROBLEM<br> What is the angle between the hands at 4:41?

qaws [65]

Answer:127.5∘

Step-by-step explanation:

The angle measure between any two consecutive numbers on a clock is 36012=30∘.

Call the "12" point on the clock the zero-degree point.

At 4:45, the minute hand is at the "9" - that is, at the 30×9=270∘ mark. The hour hand is three-fourths of the way from the "4" to the "5; that is,

30×434=142.5∘ mark.

Therefore, the angle between the hands is

270−142.5=127.5∘, the desired measure.

7 0

3 years ago