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Sever21 [200]
3 years ago
5

Students collected donated books for three libraries. The chart shows the number of books given to each of the three libraries

Mathematics
1 answer:
Eduardwww [97]3 years ago
7 0
That would be...........874
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A lottery ticket has a grand prize of $31 million. The probability of winning the grand prize is .000000018. Determine the expec
vlabodo [156]

Answer:

$0.558

Step-by-step explanation:

The expected value is the sum of the value of each outcome times the chance that it happens. In this case, there are two outcomes:

  1. Win $31 million
  2. Win $0

Then our expected value can be calculated as:

EV=(31,000,000)(0.000000018)+(0)(1-0.000000018)=0.558

5 0
3 years ago
A rectangular block has square base of area 64 cm². If the thickness of the block is 5 cm, find its total surface area. ​
Andrej [43]

Answer:

total surface area of cube is <u>6 * area of one side</u>

therefore area of one side is given 64cm^2

thickness is also given 5cm .

TSA is 64*5 = 320cm^2

hope it is helpful

4 0
3 years ago
Read 2 more answers
Thirty- five out of sixty students preferred to eat their lunch at school rather going home in lunch break. Express the numbers
IceJOKER [234]

Answer:

0.583

Step-by-step explanation:

Use a caluclator

6 0
3 years ago
What is the deceleration of a 133.5 crate if it come too a stop by a 54.5 N force
trasher [3.6K]
I did wow owner was very rude
7 0
3 years ago
Please help due Monday
Katarina [22]

Answer:

1. 43, 45, and 47

2. 50, 52, and 54

3. 47 years old

4. 106 degrees

5. 66 degrees

Step-by-step explanation:

1. Let's assume that the first number in the three consecutive odd numbers is x.

We can write an equation to express this now. x + (x+2) = (x+4) + 41.

Combining like terms, we get 2x+2 = x+45. Subtracting by (x+2) on each side, we get x = 43. Since the smallest number is 43, we can find the two larger numbers as well, since they are 2 more than one another. Therefore, the numbers are 43, 45, and 47.

2. Let's assume that the first number in the three consecutive even integers is x.

We can write an equation to express this now. x + (x+2) = (x+4)+48

Combining like terms, we get 2x+2 = x+52. Subtracting by (x+2) on each side, we get x = 50. Since the smallest number is 50, we can find the two larger numbers as well, since they are 2 more than one another. Therefore, the numbers are 50, 52, and 54

3. We can write his current age in years as x. Next year, his age will be x+1. We know that the sum of his current age and his age next year is 73, so we can write an equation to express this.

x + (x+1) = 73. Therefore, 2x + 1 = 73, or 2x = 72. This means that x = 36, or his current age is 36. In 11 years, his age will be 36 + 11 = 47 years old.

4. (21x+1) + (14x+4) = 180. Combining like terms, we get 35x + 5 = 180 Subtracting by 5 on both sides, we get 35x = 175 This means that x = 5. Now, we can find the degree measures of both angles and find the larger one. The degree measure of the angle on the left is 21(5) + 1 = 106 degrees, and the degree measure of the angle on the right is 14(5) + 4 = 74 degrees. Therefore, the degree measure of the larger angle is 106 degrees.

5. We know that the sum of the angles in a triangle is 180 degrees. Therefore, we can sum the angles up and equate them to 180 degrees.

(x-24) + (2x-108) + (1/3x+12) = 10/3x - 120 = 180. Adding 120 to both sides, we get 10/3x = 300. Multiplying both sides by 3/10, we get x = 900/10 = 90. Therefore, plugging in x = 90, we get 66 degrees.

5 0
3 years ago
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