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telo118 [61]
3 years ago
7

ben had twice as many nickels as dimes altogether ben had $4.20 write a system of equations that would determine the number of n

ickels that been has
Mathematics
2 answers:
dalvyx [7]3 years ago
6 0
Convert all to cents and it would be for every 10€ or every dime there was 10€ or two nickles so that means half of 4.20 was nickles
Nutka1998 [239]3 years ago
4 0
Ben has 21 dimes and 42 nickels.
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Fill in the table to convert the units of time from hours to minutes or minutes to hours.
tester [92]
Ok so first we need to under stand that 60 minutes is equivalent to 1 hour, by knowing this we should be able to answer the following. Our first box which needs to be filled in asking how many hours are in 300 minutes, well let’s figure this out. So we know that in 60 minutes it will be equivalent to one hours, so in order to find how many minutes are in 300 minutes we would divide 300 by 60 which give a us 5. Therefore causing the second box to me 5 hours. Our next and final box is asking how many hours are in four minutes well this one is a little harder than our previous one but I’ll help you through it. By following the same procedure as we did the previous question we are going to divide 4 by 60 and we know that dividing like so we are going to get a decimal but that’s ok it’s going to give us the answer we need to fill in the box. By dividing like so we should get a long decimal that look that this 0.066666666666667. I am going to simply this down to 0.0667. Causing my last box to be 0.667.
Summary:
second box: 5 hours
Third box: 0.0667 hours
Hope this helps!!!
Please tell me if I have made an error, I enjoy learning from my mistakes:)
Have a great rest of your day❤️
4 0
2 years ago
Help Please!!! 20 points!
Mazyrski [523]
-6/16.................brainilyst???? plz シ
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2 years ago
Rearrange the equation so n is the independent variable.<br> 3m-2n=12 <br> m=
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3 years ago
Explanation of Baye's theorem.
ELEN [110]

I will be including both an basic explanation of what it is and its proof.

I'm guessing you are either learning about conditional probability at school or preparing for competitions.

Baye's theorem states:

P(A|B)=\frac{P(B|A)P(A)}{P(B)}

That is the theorem itself and it means that the probability that event A happens given B is true equals the probability event B happens given A is true times the probability event A happens divided by the probability B happens.

That was the basic of the theorem and the proof of this is basically just testing how well you understand what conditional probability is.

P(A|B)=\frac{P(AintersectB)}{P(B)}

P(B|A)=\frac{P(BintersectA)}{P(A)}

Now we know that the probably that A and B both happens is the same as the probably that B and A both happens.

Therefore P(A|B) can be seen as P(B|A) multiplied by P(A) and then divided by P(B) which gives the right hand side of the first equation. And this is basically the theorem.

P(A|B)=\frac{P(B|A)P(A)}{P(B)}

**Note P(B) have to be not equal to 0 because having a 0 in the denominator would make this equation undefined.

If you have any questions or need further explanations please ask me in the comments of the answer, I hope this helped!

6 0
3 years ago
An insurance office has 65 employees. If 39 of the employees have cellular​ phones, what portion of the employees do not have ce
Vsevolod [243]
65-39=26 so 26 employess dont have cellular phones. So 26/65 or in simplified form 2/5
7 0
2 years ago
Read 2 more answers
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