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Novay_Z [31]
2 years ago
7

Jessie types at the rate of 3 pages every 20 minutes. Find the time it would take Jessie to type a 12 page essay

Mathematics
1 answer:
o-na [289]2 years ago
3 0

Answer:

  • 80 min or 1 hour and 20 min

Step-by-step explanation:

  • 3 pages ⇔ 20 min
  • 12 pages ⇔ x min

<u>Cross= multiply and solve for x:</u>

  • 3x = 12*20
  • 3x = 240
  • x = 240/3
  • x = 80 min = 1 hour and 20 min
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A rental car company claims the mean time to rent a car on their website is 60 seconds with a standard deviation of 22 seconds.
Gelneren [198K]

Answer:

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

Step-by-step explanation:

State the null hypothesis

H0: u = 60against the claim

Ha u≠   60   (this is a two tailed test)

Sample size n= 36

Sample mean=X`= 55

Population mean = u= 60

The significance level α = 0.05

Standard deviation= Sd = 22 seconds

Z= X`- u / Sd /√n

Z= 55- 60 / 22/√6

z= - 5/22/6

Z= -1.3635

The value of z from the table is Z∝/2= ±1.96

The critical region is less than - 1.96 and greater than 1.96.

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

4 0
3 years ago
What is the volume of a rectangular prism with length 12 in., height 16 in., and width 13 in.? V+lwh. _______in3
Verizon [17]
Hello!

To find the Volume, you'll need to multiply all of the measurements together. So you'll need to multiply 12, 16, and 13 together to get the Volume. First, let's multiply 12 and 16 together to get 192

192*13

Now you're left with 192*13. After you've multiplied them together you should get 2496

You should now have a Volume of 2496in³

I hope this helps!
3 0
3 years ago
The use of the words weary, dreary, and bleak in "The Raven" contribute to:
swat32
The answer is definitely C because the words are very dark and creepy.
3 0
3 years ago
Read 2 more answers
which numbers are irrational? check all that apply. square root of 196, square root of 80, square root of 16, pi, square root of
Vilka [71]

Answer: \sqrt{80}, \pi, \sqrt{12}

Step-by-step explanation:

these are all irrational! hope this helped you :3.

7 0
3 years ago
Pls helppppppppppppppppppppp
Julli [10]

Answer:

10 2/3

Step-by-step explanation:

Multiply 4 and 2 and then multiply 2 and 4. If you do that then you get 8 8/3. You then just take the numerator and turn it into whole numbers to get 10 2/3.

4 0
3 years ago
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