2 years ago

Solve the following equation for A. Be sure to take into account whether a letter is

Mathematics

1 answer:

Sati [7]2 years ago

8 0

Answer:

4/a

Step-by-step explanation:

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If 6 is added to three quarters of a certain number, the result is 42 . Find the original number

Basile [38]

Answer:

Step-by-step explanation

Hello!

3x/4 + 6=42

3x/4=42-6 = 36

3x = 36*4

3x = 144

x= 144/3 =48

3/4 of 48 = (48*3) / 4 =36

36+6=42

the original number is 48

4 0

2 years ago

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Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probabil

Ahat [919]

Answer: The probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

Step-by-step explanation:

The cumulative distribution function for exponential distribution is :-

$P(X\leq x)=1-e^{\frac{-x}{\lambda}}$ , where $\lambda$ is the mean of the distribution.

As per given , we have

Average tread-life of a certain brand of tire : $\lambda=\text{42,000 miles }$

Now , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles will be :

$P(X\leq 65000)=1-e^{\frac{-65000}{42000}}\\\\=1-e^{-1.54761}\\\\=1-0.212755853158\\\\=0.787244146842\approx0.7872$

Hence , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

8 0

3 years ago

A x b = 400<br> a ÷ b = 4<br>how much is b

laila [671]

Answer:

4 x 100 = 400

400 ÷100 = 4

B= 100

Step-by-step explanation:

8 0

2 years ago

Which of the following is the inverse of y=3x

Keith_Richards [23]

Y/3=x or y divided by 3 is equals x. They are the same thing just but the equation in word form.

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2 years ago

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How do I answer this problem 24/5+_+8/7=9

juin [17]

Uhm so that is the photo

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2 years ago