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Sidana [21]
3 years ago
13

A school counselor heard that teenagers sleep an average of 9 hours per night on the weekend. The counselor

Mathematics
1 answer:
Katen [24]3 years ago
7 0

Answer:

H0​:μ=9 hours Ha​:μ not equal to 9 hours​

Step-by-step explanation:

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450 is 10x's as much as​
Alenkinab [10]

Answer:

450 is 10x's as much as​ 4500

Step-by-step explanation:

450 times 10 is 4500, my guy .

and once again I'M CORRECT!!!

5 0
3 years ago
Biologists have found that the number of chirps some types of cricket make per minute depends upon the temperature this relation
Alex Ar [27]

Answer: Crickets make 172 chirps/min at 80 degrees Fahrenheit

Step-by-step explanation:

Step 1

Using the point slope formulae for Linear functions , we have that

y - y1 = m(x - x1)

where x  and y are two points  representing the  temperature and chirps /min respectively

And  

m= slope

Step 2 : Finding the slope , m

where x1=60

           y1=92

           x2= 75

           y2=152

m= (y2-y1)/ (x2-x1)

= (152- 92)/(75-60)

=60/15 =4

Bringing down the point/slope formula and imputing the known values to find our equation to show the relationship cricket make per minute and  the temperature

y - y1 = m(x - x1)

y - 92= 4(x - 60)

y - 92 = 4x -240

y = 4x - 240 + 92

y = 4x - 148

Step 3

To find the number of chirps be per minute (y) if the temperature is 80 degrees Fahrenheit( x)

y = 4(80) - 160

y = 320 - 148

y = 172 chirps/min at 80 degrees Fahrenheit

6 0
2 years ago
Which set of ordered pairs could be generated by an exponential function? A)(negative 1, negative one-half), (0, 0), (1, one-hal
Vadim26 [7]

Answer:

<h2>C) (negative 1, one-half), (0, 1), (1, 2), (2, 4)</h2>

Step-by-step explanation:

The set C could be generated by an exponential function. The main reason is that exponential functions hava a restricted range, it can't have negative numbers or the number zero, because power can only be equal or greater than 1.

Additionally, for all exponentials, a null exponent gives 1 as an answer, so point (0, 1) is always present in an exponential function.

Therefore, the right answer is C.

3 0
3 years ago
Read 2 more answers
5h+4p=17<br> 4h+2p=11.50<br> H=2 and p=1.75<br> Show your work to prove this.
Lana71 [14]
Here is your answer
Mark it brainliest

8 0
3 years ago
Arnold is planning on painting a mural. Before painting the mural, Arnold painted the picture on a paper that is 5 inches wide a
Finger [1]

Answer: Mural height: 22ft and the Mural width is 10ft

Step-by-step explanation: I took the test and got it wrong, but they told me the correct answers after I took the test. (I got to K-12) Proof:

5 0
2 years ago
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