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olganol [36]
3 years ago
5

If you used 0.5 ml of sample and 2.5 ml of diluent what is your dilution ratio?

Mathematics
1 answer:
Vikki [24]3 years ago
6 0

Answer:

1/6

Step-by-step explanation:

I think it is:

0.5/(0.5+2.5) = 0.5/3 = 1/6

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A theater has 418 seats put in rows of 19 seats each. how many rows are in the theater
GarryVolchara [31]

Answer:

22

Step-by-step explanation:

418 divided by 19 is 22.

8 0
2 years ago
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Answer:

(2x – 3)(5x^2 – 2x + 7)

=103−192+20−21

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4 0
3 years ago
The number of points in the first five games of the basketball season are listed below. What is the mean number of points scored
Fudgin [204]

Answer: 29

Step-by-step explanation:

7 0
3 years ago
HELP URGENT PLEASE
ki77a [65]

Answer:

A)

15 hours

B)

108 hours

C)

2074.29 miles

Step-by-step explanation:

Under the assumption the earth is a perfect circle, then in one complete rotation about its axis ( 24 hours) the Earth will cover 360 degrees or 2π radians.

A)

In every 24 hours the earth rotates through 360 degrees ( a complete rotation). We are required to determine the length of time it will take the Earth to rotate through 225 degrees. Let x be the duration it takes the earth to rotate through 225 degrees, then the following proportions hold;

(24/360) = (x/225)

solving for x;

x = (24/360) * 225 = 15 hours

B)

In 24 hours the earth rotates through an angle of 2π radians (a complete rotation) . We are required to determine the length of time it will take the Earth to rotate through 9π radians. Let x be the duration it takes the earth to rotate through 9π radians, then the following proportions hold;

(24/2π radians) = (x/9π radians)

Solving for x;

x = (24/2π radians)*9π radians = 108 hours

C)

If the diameter of the earth is 7920 miles, then in a day or 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle;

circumference = 2*π*R = π*D

                         = 7920*3.142

                         = 24891.43 miles

Therefore a point on the equator covers a distance of 24891.43 miles in 24 hours. This will imply that the speed of the earth is approximately;

(24891.43miles)/(24 hours) = 1037.14 miles/hr

The distance covered by the point in 2 hours will thus be;

1037.14 * 2 = 2074.29 miles

5 0
3 years ago
Consider the line y = x – 4. A line parallel to the graph of the line would have a slope of 1 . A line perpendicular to the grap
sergejj [24]

Answer:

-1

Step-by-step explanation:

A line in the opposite direction will make a perpendicular line (90° Angle)

7 0
3 years ago
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