2 years ago

What is -15x(-7) ( integer operation)

Mathematics

1 answer:

MA_775_DIABLO [31]2 years ago

6 0

$- 15x( - 7) = 105x$
Not much more to say about this. Just multiply the integer by the coefficient.

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How we supposed to find the answer?

Gnoma [55]

Answer:

5^6

Step-by-step explanation:

(5^3)^2

We know that a^b^c = a^(b*c)

5^(3*2)

5^6

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3 years ago

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Kylie has $70 to spend on clothes. She wants to buy a pair of jeans for $30 and spend the rest on t-shirts. Each t-shirt costs $

NeX [460]

70-30=40

40 divided by 8 = 5

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she can buy at the most 5 T-shirts.

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3 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 .

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3 years ago

You have 15 pennies in your pocket. Of those pennies, 3 are Canadian. Suppose you pick a penny out of your pocket at random. Fin

den301095 [7]

The best and most correct answer among the choices provided by your question is the fourth choice or letter D. The probability is 4/5.

<span>P ( canadian)= 3/15 = 1/5
On the other hand, P (not canadian) = 1 - 1/5 = 4/5</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly.

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3 years ago

Find the value of f(x) at the given value of x: f(x) = (x -4)(x + 3), x = 3

mario62 [17]

Answer:

-6

Step-by-step explanation:

f(x)= (3- 4)(3+3)

=( -1 )(6)

= -6

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2 years ago