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ladessa [460]
4 years ago
8

A coin is biased to show 39% heads and 61% tails. The coin is tossed twice. What is the probability that the coin turns up tails

on both tosses?
Mathematics
1 answer:
julia-pushkina [17]4 years ago
7 0
I'm pretty sure that this is a trick question, the answer is 61%.
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Could someone help I’m so confused
oksano4ka [1.4K]

Answer:

6/4

Step-by-step explanation:

ratio of x to y is the slope so

you can use butterfly method/cross multiply (multiply numerator on one side to the denominator on the other to bring all the terms up and then solve for y)

4(y+3)=6(x+2)

4y+12=6x+12

y=6/4x

so it would be 6/4

4 0
3 years ago
A school is arranging a field trip to the zoo. The school spends 615.65 dollars on passes for 33 students and 2 teachers. The sc
Aneli [31]

Answer:

the answer is $26.38

Step-by-step explanation:

I hope this helps!

3 0
3 years ago
WHAT IS BAC <br> a.50 <br> b.80<br> c.100<br> d.130
ikadub [295]
(D)130 is the answer
4 0
3 years ago
Ruby worked eight hours more than Isacc.and Svetlana worked 3 times as Ruby.Togethet they worked 150 hours.Find the number hours
andrey2020 [161]
Ruby worked X + 8
Isaac worked X
Svetlana worked 3(X+8)
Let's combine all of that by putting it in an equation
X+8+x+3(x+8)=150
Do what's in parentheses first
x+8+x+3x+24=150
Now we add likes
X+x+3x+8+24=150
5x+32=150
We want x on one side of the equation & numbers on the other side
5x+32-32=150-32
5x=118
Solving for X
5x/5=118/5
X=23.6
Isaac worked 23.6
Ruby worked 8 more hours than Isaac so we add 8 to 23.6= 31.6
Svetlana worked 3 times Ruby so 3x31.6= 94.8
7 0
3 years ago
What multiple to 324 and adds up to 42
Lunna [17]

well you have to divide 324 by 42 which equals to 7.71 which whe you round it to the nearst tenths is equal to 7.7 so your answer is 7.7

8 0
3 years ago
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