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frez [133]
3 years ago
5

Traffic police measure the speed of the incoming vehicles. The speeds are normally distributed with a mean of 70 km/hr and a sta

ndard deviation of 10 km/hr. What percentage of vehicles would-be travelling at random has a speed less than 80 Km/hr?
Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0

Answer:

Ayayai Company has an old factory machine that cost $63,000. The machine has accumulated depreciation of $35,280. Ayayai has decided to sell the machine. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)

Step-by-step explanation:

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irina [24]

Answer:

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Step-by-step explanation:

8x + 6y = 300 \\ x + y = 40 \\ 6x + 6y = 240 \\ 2x = 60   \\ =  > x = 30 \\ y = 10

7 0
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91 more than the square root of a number
Genrish500 [490]

Answer:

Step-by-step explanation:

y = x 2 + 91

Explanation:

Let the number be  x

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So, we can write it as an algebraic expression with two variables as :

y = x ^2  +  91

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3 years ago
The math test has 10 multiple choice questions each with 4 answer for Betty guesses correctly on the first two questions what is
lord [1]
If she already gets the first two, thats a given 100% situation. then it is just 1/4
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3 years ago
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Aneli [31]

Answer:

The answer is provided at the attachment

Step-by-step explanation:

The answer is provided at the attachment

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3 years ago
State the type of angles and solve for the yven vatizble.
Alika [10]

Answer:

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Step-by-step explanation:

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3 years ago
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