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Over [174]
3 years ago
5

A factory makes car batteries. The probability that a battery is defective is 1/11. If 500 batteries are tested, about how many

are expected to be defective?
Mathematics
1 answer:
valentinak56 [21]3 years ago
3 0

Answer:

45.45 batteries

Step-by-step explanation:

The probability of any random battery being defective is 1 in 11, the number of expected defects in a population of 500 batteries is given by:

E= \frac{1}{11}*500\\E=45.45\ batteries

45.45 batteries are expected to be defective.

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A train traveled 325 miles in 5hrs. What was the trains average rate of speed in miles per hr ?
Leya [2.2K]

Hi there!

To find the average speed of a moving object all you need to do is divide the distance traveled by the object by amount of time it took the object to reach its final destination. So for this problem it would go like this:

325 ÷ 5 = 65

So for this problem in particular the answer is 65 MPH was the average speed of the train.

Your friend, ASIAX

5 0
3 years ago
Sandy and Alex are married, with no dependents. They wish to file a joint tax return. Both of them work, but their combined sala
GREYUIT [131]

Answer:I'm pretty sure it would be C but that might be wrong

Step-by-step explanation:

7 0
2 years ago
How do you solve this problem <br> 7= ln(x+5)
Gnesinka [82]
Answer:

x = 1091.63315843
<span>
Setting Up:

7 = ln ( x + 5 )

ln translates to "log" with an "e" as the base or subscript ( a small "e" at the bottom right of the "g" in log).

You take the base of the log and put it to the power of "7" ( "7" is the natural log of ( x + 5 ) in this problem ).

The value of which the logarithm is calculated is set equal to the base of the logarithm to the power of the calculated logarithm of the value.

e^7 = x + 5

Solving</span>:

e = 2.71828182846

Natural logarithms are logarithms to the base of the constant 'e'.

e^7 = x + 5    ( simplify e^7 )

<span>1096.63315843 = x + 5
</span>
Subtract 5 from each side.

1091.63315843 = x


5 0
2 years ago
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Part C: The surface area of the prism is the area of the the big rectangle in the net + the area of the 2 triangles

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8.6• ( 3+4+5)= 103.2 in ^2
Area of the triangles
If we get the 2 trangles together along their longest side we get another rectangle
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5 0
3 years ago
-5x+10x+3=5x+6 the equation has?
Vaselesa [24]

Answer:

-5x+10x+3=5x+6 Is No solution

3 0
3 years ago
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