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Rudik [331]
3 years ago
11

HELP ASAP

Mathematics
2 answers:
slega [8]3 years ago
7 0

Answer:

No

Step-by-step explanation:

The sample size wasn't big enough. It could only be a trend in that grade.

Troyanec [42]3 years ago
3 0

Answer:

Mr. Rodriguez made a reasonable assumption. His surveys were random, non-biased, and relatively large in comparison to the school population. 12 out of 60 is 20%.

Step-by-step explanation:

You might be interested in
Let C ( t ) be the number of US cell phone subscribers in millions in t years since 1995. A linear model for the data is F ( t )
Andru [333]

ANSWER

In 16 years time.


EXPLANATION.



If the number of subscribers is 324 million, then it means


f(t)=324


But we were given that,


f(t)=18.997t+16.711



This implies that,


324=18.997t+16.711


We now solve for t,



324-16.711=18.997t



307.289=18.997t



\frac{307.289}{18.997}=t



16.17566=t



That will be approximately in the 16th year.











6 0
3 years ago
Which formula gives the x-coordinates of the maximum values for y = cos(x)?
REY [17]

Answer with explanation:

The given trigonometric Function is,

     y= cos x

→The maximum value of , cos x , is 1,  at x=0 degree.

Cos x =1

→Cos x = Cos (0)degree,

x=2 k \pi \pm 0

→ for, k= An Integer

x=2 k π→→General formula that  gives the x-coordinates of the maximum values for y = cos(x)

Ordered Pair =(x,y)=(2 k π, 1)

For, any value of , k in the given equation, y will be always 1.

3 0
3 years ago
Can someone break this down for me?!
Anna [14]

Answer:

The answers are in the question.

Step-by-step explanation:

The wording can be off-putting but the answers are mostly there for you. It says that when the wind was at the tail of the plane, the travel was hastened to 5 hours instead of six. Is the rate of speed with the wind in favor of the plane is r+21, then it stands to reason that traveling AGAINST the wind will cause the rate to drop to r-21. Taking the average of the two travel times (5 and 6 hours each), we get 5.5 hours. Since speed is distance divided by time, the speed of the plane in still air will be <em>d</em> / 5.5

Be sure to label the speed as mph.

5 0
3 years ago
F(x) = x3 + 3x² - 4x
Nezavi [6.7K]

Answer:

x(x−1)(x+4)

Step-by-step explanation: there are no like terms

6 0
3 years ago
Question 1<br> Find the absolute value of each integer.<br> a. 141 =<br> b. l-12] =<br> c./-212=
Vilka [71]

Answer:

is it a test and what is the lesson name called?

Step-by-step explanation:

5 0
3 years ago
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