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olasank [31]
3 years ago
5

If 42% of a number N is 8.4, what is the value of N?

Mathematics
1 answer:
vfiekz [6]3 years ago
6 0

Answer:

20

Step-by-step explanation:

1% = .2 so 100%=20

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He mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle. Analysis of 20 bottles indicates a sa
mezya [45]

Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg

Step-by-step explanation:

Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.

Let \mu be the population mean .

We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.

i.e. Null hypothesis :H_0:\mu=140

Alternative hypothesis for two tail hypothesis has sign (≠).

i.e. Alternative hypothesis : H_1 : \mu\neq140

∴ The hypotheses for a two-tailed test of the claimed potassium content:

H0: μ = 140 mg vs. H1: μ ≠ 140 mg

3 0
3 years ago
An EASY QUESTION because I’m dumb sometimes 30 POINTS!( 05.05 LC)
vaieri [72.5K]

Answer:

Wonder Woman

Step-by-step explanation:

she has the highest total

3 0
3 years ago
These figures are congruent.What is the measurement of E?
Tcecarenko [31]

Answer:

they are congruent so e=44°

Step-by-step explanation:

4 0
3 years ago
4 hours 30 minutes = ? Minutes
tigry1 [53]
The answer is:  " 270 minutes " . 
__________________________________________________________
        →  There are "270 minutes" in "4 hours and 30 minutes" .
__________________________________________________________
Explanation:
__________________________________________________________
Method 1):
__________________________________________________________
  Note:  60 minutes = 1 hour (exactly); 

30 minutes =   ?   hr ? ; 

→  (30 minutes) * (1 hr/ 60 minutes) ;

=
(30/60) hr = (3/6) hr  = (3÷3)/(6÷3) hr ;

=
" \frac{1}{2} hr " ;  

or; write as:  " 0.5 hr " .        
_________________________________________________________

So  "4 hours & 30 minutes" = 4 hours + 0.5 hours = 4.5 hours.

→   4.5 hours  =   ?  minutes ; 

The answer is:  " 270 minutes" .  4.5 hours * \frac{60 min}{1 hr}  ; 

       =  (4.5 * 60) minutes  =  " 270 minutes " .

→  The answer is:  " 270 minutes ".
___________________________________________________________
Method 2)
 
___________________________________________________________

    "4 hours and 30 minutes"  = <u>  ?  </u> minutes " . 
___________________________________________________________

→  " 4 hours   =  <u>  ?  </u> minutes " ; 

→   4 hr . * \frac{60 min}{1 hr}  =  (4 * 60) minutes  =  240 min. ; 

→  There are " 240 minutes in 4 hours" .

→  To find the number of "minutes" in "4 hours and 30 minutes" ;

→  we takes the number of minutes in 4 hours—which is "240 minutes"—and add "30 minutes" to that number; as follows:
   
           →  " 240 minutes + 30 minutes " ; 

to get:   " 270 minutes " . 
_______________________________________________________
 
      →  There are  "270 minutes"  in  "4 hours and 30 minutes" .
_______________________________________________________

The answer is:  
" 270 minutes " . 
_______________________________________________________
4 0
2 years ago
Solve the exponential equation: 6–2x = 62 – 3x
eduard

Answer:

the answer should be 56 :)

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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