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aleksandrvk [35]
3 years ago
11

Help solve please show steps

Mathematics
2 answers:
ad-work [718]3 years ago
8 0

Here you don’t need to solve the equation,the value of the problem is zero

Step2247 [10]3 years ago
5 0

For both methods I will use the quadratic formula. Look at the image below

Hope this helped!    

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Sphinxa [80]

the answer would be -b

5 0
3 years ago
Last Wednesday, a random sample of 24 students were surveyed to find how long it takes to walk from the Fretwell Building to the
Ray Of Light [21]

Answer:

E

Step-by-step explanation:

Solution:-

- We are to investigate the confidence interval of 95% for the population mean of walking times from Fretwell Building to the college of education building.

- The survey team took a sample of size n = 24 students and obtained the following results:

                Sample mean ( x^ ) = 12.3 mins

                Sample standard deviation ( s ) = 3.2 mins

- The sample taken was random and independent. We can assume normality of the sample.

- First we compute the critical value for the statistics.

- The z-distribution is a function of two inputs as follows:

  • Significance Level  ( α / 2 ) = ( 1 - CI ) / 2 = 0.05/2 = 0.025

Compute: z-critical = z_0.025 = +/- 1.96

- The confidence interval for the population mean ( u ) of  walking times is given below:

                      [ x^ - z-critical*s / √n  ,   x^ + z-critical*s / √n  ]

Answer:        [ 12.3 - 1.96*3.2 / √24  ,  12.3 + 1.96*3.2 / √24  ]

                   

3 0
3 years ago
NEED HELP ASAP! WILL MARK BRAINLIEST!
snow_tiger [21]
The answer would be 30 since for 180 pounds and 60 feet you would need to divide 180 by 60 to get the unit rate for the pressure and then multiply by 10 which would get you 30. Correct me if I’m wrong. Hope it helps :)
3 0
3 years ago
Someone pls help me i really need this
lukranit [14]
Y=1\2x.
hopes this helps you
5 0
3 years ago
Could y'all help me with thiss question i'll name you the brainliest hoping your day is going well!
Neporo4naja [7]

Answer:

the first two and last one

Step-by-step explanation:

8 0
3 years ago
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