Maria is tossing a fair coin. She tosses the coin ten times and it lands on heads eight times. If Maria tosses the coin an eleventh time, what is the probability that it will land on heads?A) 1/5 B) 1/2 C) 4/5 D) 3/2
Answers
The correct answer is B. The eleventh toss of a coin is independent from previous tosses. So regardless of what happened before, the chance to get heads is always 1/2.
The bases on a softball diamond are 60ft apart. How far is it from home plate to second base
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ok so I ams assuming that from home to 1 is 60 from 1 to 2 is 60 from 2 to 3 is 60 from 3 to home is 60
so we have a squaer from home to second base that is a diagonal line through the square
find the distance
we see that we have 2 right triangles with legs 60 and 60 use pythagoren theorem to find hypotonuse (longest side)
a^2+b^2=c^2 60^2+60^2=c^2 3600+3600=c^2 7200=c^2 square root both sides 60√2=c 84.85=c about 85 ft
When can you add or subtract equations in a system to solve the system? when do you have to multiply first? Justify your answers with examples.
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You must always use the order of operations also known as PEMDAS meaning multiplication and division come before adding and subtracting for example when solving 2+2÷2 if not follwing PEMDAS it is 2 When you do it the correct way using PEMDAS it will be 3
1, the difference between 42 and 19 2,100 decreased by 77 3 ,30 more than 20
plz answer all of above
Answers
difference means subtraction so decreased means subtraction more than means addition
1. 42-19 = 23
2. 2100-77 = 2023
3. 330+20 = 350
In Miami, the number of highway accidents increased by 20% over a four year period. How many accidents were there in 2013 if there were 5,120 in 2009?