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Ksenya-84 [330]
3 years ago
8

On Monday, a security guard spent 4.5 hours on patrol and 2 hours on surveillance. On Tuesday, the officer spent 1 hour and 40 m

inutes on surveillance and 3 hours on patrol. Which day has a greater ratio of time on surveillance to time on patrol
Mathematics
1 answer:
Troyanec [42]3 years ago
6 0
The first one is greater, since 4.5:2 is greater than 1.66:3
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<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B27%7D%20%20%5Ctimes%20%20%5Csqrt%7B75%7D%20" id="TexFormula1" title=" \sqrt{27}
Harman [31]

Answer:

44.95

Step-by-step explanation:

\sqrt{27}  \times  \sqrt{75  }  \\  = 5.19 \times 8.66 \\ 44.9454

Two decimal places = 44.95

5 0
3 years ago
What is the 20 digit of 89
Llana [10]
The twentieth digit would be 20. Hope you found this helpful
7 0
3 years ago
Jon borrows $6.50 from his friends to pay for snacks, and $11.75 from his sister to go to the movies. how much money does he nee
Alex777 [14]

Answer:

Step-by-step explanation:

You need to add $6.50 and $11.75 and you get $18.25.

3 0
3 years ago
Read 2 more answers
In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on 1170 vehicles. There are a
Nady [450]

Answer:

a. 19.68 miles per gallon.

b. 26.32 miles per gallon.

Step-by-step explanation:

Mean gas mileage (μ) = 23.0 mpg

Standard deviation (σ) = 4.9 mpg

In a normal distribution, for any length X, the z-score is determined by the following expression:

 z=\frac{X-\mu}{\sigma}

In a normal distribution, the 25th percentile  (first quartile) of a normal distribution has a corresponding z-score of z = -0.677 and the 75th percentile  has a corresponding z-score of z = 0.677

a. The first quartile of the distribution of gas mileage is

-0.677=\frac{X_{25}-23}{4.9}\\X_{25}=19.68\ mpg

19.68 miles per gallon.

b. The third quartile of the distribution of gas mileage is

0.677=\frac{X_{25}-23}{4.9}\\X_{25}=26.32\ mpg

26.32 miles per gallon.

5 0
3 years ago
What value of x is in the solution set of –5x – 15 &gt; 10 + 20x?
Sunny_sXe [5.5K]
-5x - 15 > 10 + 20x...subtract 10 from both sides, add 5x to both sides
-10 - 15 > 20x + 5x ...simplify
-25 > 25x...divide both sides by 25
-25/25 > x ....reduce
-1 > x or x < -1 <===

6 0
3 years ago
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