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brilliants [131]
3 years ago
9

1000 coins are tossed find the probability of getting exactly 500 heads.

Mathematics
1 answer:
ipn [44]3 years ago
5 0

Answer:

probability of getting exactly 500 heads= 1

Step-by-step explanation:

If a coin is tossed, the probability of obtaining a head = 0.5

If a coin is tossed, the probability of obtaining a tail= 1- probability of obtaining a head

If a coin is tossed, the probability of obtaining a tail=1-0.5

If a coin is tossed, the probability of obtaining a tail=0.5

So if 1000 coin are tossed, the probability of getting exay 500 heads which is already the half of 1000 is 1

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Identify which values are solutions of 4x-7>=-1
Mrrafil [7]

Answer:

x=1.5

or

x=1 1/2

Step-by-step explanation:

4x-7>-1

add 7 to both sides

4x=6

divide by 4 on both sides

x=1.5

or

x=1 1/2

5 0
2 years ago
Ali earns a weekly salary of $475. She also earns $30 for each computer she sells. Which linear equation represents her total we
Wewaii [24]

Answer:

y=30x+475

Step-by-step explanation:

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept or initial value

Let

y ----> total weekly pay

x ---> is the number of computers sold in a week

In this problem we have

m=\$30\ per\ computer\ sold

b=\$475

substitute

y=30x+475

8 0
3 years ago
Can someone help me with this please
stellarik [79]

Ok so we'll  go ahead and solve for y first -  we just need to get it alone on one side of the equal sign

Step 1: subtract 2x from each side

2x - 7y - 2x = 19 - 2x

This cancels out the 2x on the left, giving us

-7y = 19 - 2x

Step 2: divide both sides by -7

\frac{-7y}{-7} = \frac{19}{-7} + \frac{-2x}{-7}

This gives us

y = -19/7 + 2x/7

That should be your answer for the first question. Now solving the next parts are easy. All you need to do is plug in x.

When x = -3

y = -19/7 + 2x/7

y = -19/7 + 2(-3)/7

y = -19/7 - 6/7

y = -25/7


When x = 0

y = -19/7 + 2x/7

y = -19/7 + 2(0)/7

y = -19/7


When x = 3

y = -19/7 + 2x/7

y = -19/7 + 2(3)/7

y = -19/7 + 6/7

y = -13/7


Hope that helps! Feel free to ask if I can help with anything else :)

7 0
2 years ago
100,85,70,_,40<br><br><br> What is the number pattern?
nirvana33 [79]

Answer:

55

Step-by-step explanation:

its subtracting 15 each time

3 0
2 years ago
Read 2 more answers
write and solve an equation Sam's father is 3 times Sam's age the sum of their ages is 56 how old is Sam's father
Klio2033 [76]
The answer would be 168 because Sam’s own age is 56 and his father was 3x older than him so u have to use 56x3=168. Babam u got urself an answer
3 0
3 years ago
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