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goblinko [34]
3 years ago
7

The daytime temperature in Apple Valley is falling by 2.5 degrees each day. What will the net change in the daily temperature be

after one calendar week? -2.5 degrees 2.5 degrees -4.5 degrees -17.5 degrees 17.5 degrees
Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
8 0
2.5x7( days in a week) = 17.5 and since its falling it would be negative
Kobotan [32]3 years ago
8 0

Answer:

The correct option is D. -17.5 degrees

Step-by-step explanation:

The daytime temperature in Apple Valley is falling by 2.5 degrees each day

Therefore, Change in the temperature each day = -2.5 degrees

Now, we need to find the net change in the daily temperature after one calendar week

Now, number of days in one calendar week = 7

So, Net change in the daily temperature after one calendar week = Daily change × Number of days in one calendar week

⇒  Net change in the daily temperature after one calendar week = -2.5 × 7

⇒  Net change in the daily temperature after one calendar week = -17.5 degrees

Therefore, The correct option is D. -17.5 degrees

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Answer:

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

Step-by-step explanation:

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Since 3-pointers and free throws are independent, first we find the probability of making exactly 3 3-pointers out of 10, then the probability of making exactly 5 free throws out of 10, and then the probability that the player will make exactly 3 3-pointers and 5-free throws is the multiplication of these probabilities.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of making 3 3-pointers out of 10:

The chances of a basketball player hitting a 3-pointer shot is 0.4, which means that p = 0.4. So this is P(X = 3) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,3}.(0.4)^{3}.(0.6)^{7} = 0.21499

Probability of making 5 free throws out of 10:

The probability of hitting a free-throw is 0.65, which means that p = 0.65. The probability is P(X = 5) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,5}.(0.65)^{5}.(0.35)^{5} = 0.15357

Calculate the probability that the player will make exactly 3 3-pointers and 5-free throws.

0.21499*0.15537 = 0.0334

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

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