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3241004551 [841]
3 years ago
5

Answer this please! extra points and brainliest will b given

Mathematics
1 answer:
zaharov [31]3 years ago
7 0

Answer:

add 7 to 9 times k   : 7+9k

c cubed minus the product of 5 and q plus 4 : c^{3}  - 5q + 4

twice r plus 7 is equal to 45 minus r  : 2r+7=45-r

Product of h and 4 is subtracted from one-fifth of x is 35 :(h*4) - 1/5*x

one third of the difference bewteen 6 and p is added to 8 : (6-p)+8

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Noice that means points for me lol
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Help is appreciated! <br> What is the slope of the line, and what is the y-intercept?
Lady_Fox [76]
The slope is 1
The y-int is (0,-7)
3 0
3 years ago
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A statistician selected a random sample of 125 observations from a population with a known standard deviation equal to 16 and co
serious [3.7K]

Answer:

Step-by-step explanation:

Given that a statistician selected a random sample of 125 observations from a population with a known standard deviation equal to 16 and computed a sample mean equal to 77

We can use Z critical values since population std deviation is known. Also sample size >30

We find std error of mean = \frac{16}{\sqrt{125} } \\=1.4311

Margin of error = Z critical value * 1.4311

Z critical values for 93% = 1.81

for 89% = 1.60

n Std error Z critical  Conf interval  

            89%    

     

125 1.4311     1.6  (74.71024 79.28976 )

     

     

          93%    

            1.81  (74.409709 79.590291 )

We find that when confidence level increases interval width increses.

c) When sigma changes to 441, std error changes to \frac{16}{\sqrt{441} } \\=0.7619

So we get

n Std error Z critical  Conf interval  

           89%    

     

441  0.7619     1.6  (75.781 78.219 )

     

     

         93%    

           1.81  (75.621 78.37904)

d) When n = 625, std error changes to 16/25 = 0.64

n Std error Z critical  Conf interval  

        89%    

     

441 0.64 1.6        (75.976 78.024 )

     

     

       93%    

        1.81      (75.842 78.1584)

When sample size increases, confidence interval width decreases.

8 0
3 years ago
Graph the function f(x)=|x+1|+2
11111nata11111 [884]

Answer:

---

Hope this helps!

3 0
3 years ago
If the diagonal path is 750 feet long and the width of the park is 450 feet, what is the length, in feet, of the park?
jarptica [38.1K]

This problem can be looked at like a right triangle, where the hypotenuse is 750 and one leg is 450.  Thus 450^2 + the length of the park^2 = 750 ^2.

202500 + the length of the park^2 = 562500

the length of the park^2 = 360000

the length of the park = 600

Hope it helps <3

8 0
3 years ago
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