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2 years ago

Do I divide or multiply not sure

Mathematics

1 answer:

Makovka662 [10]2 years ago

5 0

Answer:

x=40

Step-by-step explanation:

x= 360-(273+47)

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Suppose you are traveling on business to a foreign country for the first time. You do not have a bus schedule, but you have been

maksim [4K]

Answer:

Step-by-step explanation:

Lucky guess I guess.

8 0

3 years ago

2ab+6a+12abc factored completely

pav-90 [236]

2a(b+3+4bc)
just take out the greatest common factor :)

5 0

3 years ago

A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 2

Shalnov [3]

Answer:

The expected winnings for a person buying 1 ticket is -0.2.

Step-by-step explanation:

Given : A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 25 cents each, find the expected winnings for a person buying 1 ticket.

To find : What are the expected winnings?

Solution :

There are one first prize, 2 second prize and 20 third prizes.

Probability of getting first prize is $\frac{1}{20000}$

Probability of getting second prize is $\frac{2}{20000}$

Probability of getting third prize is $\frac{20}{20000}$

A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each.

So, The value of prizes is

$\frac{1}{20000}\times 1000+\frac{2}{20000}\times 300+\frac{20}{20000}\times 10$

If 20000 tickets are sold at 25 cents each i.e. $0.25.

Remaining tickets = 20000-1-2-20=19977

Probability of getting remaining tickets is $\frac{19977}{20000}$

The expected value is

$E=\frac{1}{20000}\times 1000+\frac{2}{20000}\times 300+\frac{20}{20000}\times 10-\frac{19977}{20000}\times 0.25$

$E=\frac{1000+600+200-4994.25}{20000}$

$E=\frac{-3194.25}{20000}$

$E=-0.159$

Therefore, The expected winnings for a person buying 1 ticket is -0.2.

3 0

3 years ago

In the figure, OA is a diameter of the smaller circle and O is the centre of the larger circle. Find the

Burka [1]

Answer:

942 6/7 cm²

Step-by-step explanation:

Since O = Center of bigger circle, OA = Radius of bigger circle.

∴ Area of smaller circle - Area of bigger circle = Area of shaded part.

∴ Area of smaller circle = 22/7 × 10²

= 22/7 × 100

= 2200/7

= 314 2/7 cm²

∴ Area of bigger circle = 22/7 × 20 ²

= 22/7 × 400

= 1257 1/7 cm²

∴ Area of shaded part = 1257 1/7 - 314 2/7

= 942 6/7 cm²

5 0

3 years ago

These lines are below are parallel if the slope of the green line is -4 what is the slope of the red line

Alja [10]

Answer:

The slope would also be -4.

Step-by-step explanation:

This is because parallel lines have the exact same slope. Since these two lines are parallel and the first has a slope of -4, the second must as well.

7 0

3 years ago

Read 2 more answers