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Slav-nsk [51]
4 years ago
10

Lisa plays a video game in which she loses points. She loses 3 points 2 times what is her score?

Mathematics
1 answer:
never [62]4 years ago
4 0

Answer:

8

Step-by-step explanation:

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The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 30% of adult Australian s
m_a_m_a [10]

Answer:

0.15% probability that more than 7 of them weigh 65 lb

Step-by-step explanation:

For each dog, there are only two possible outcomes. Either they weigh 65 pounds, or more, or they do not. The probability of a dog weighing 65 pounds or more is independent of other dogs. So we use the binomial probability distribution to solve this question.

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.

30% of adult Australian sheep dogs weigh 65 pounds or more.

This means that p = 0.3

Sample of 10 adults dogs.

This means that n = 10

What is the probability that more than 7 of them weigh 65 lb

This is

P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10)

In which

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

P(X = 8) = C_{10,8}.(0.3)^{8}.(0.7)^{2} = 0.0014

P(X = 9) = C_{10,9}.(0.3)^{9}.(0.7)^{1} = 0.0001

P(X = 10) = C_{10,10}.(0.3)^{10}.(0.7)^{0} \cong 0

P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) = 0.0014 + 0.0001 + 0 = 0.0015

0.15% probability that more than 7 of them weigh 65 lb

7 0
3 years ago
HELP I NEED HELP ASAP
belka [17]

Answer:

i believe it b 75% sure i sorry if i can't help

Step-by-step explanation:

6 0
3 years ago
A recipe calls for 1 3/4 cups of flour. If the recipe is tripled, how much flour is needed?
Grace [21]
3 and 9/12 you can simplify it still, you figure that part out ;)<span />
7 0
3 years ago
Given RS = 6, ST = 3, and SL = 4, find SM.
NemiM [27]
A² + b² = c²
3² + 4² = c²
9 + 16 = c²
C² = 25
C = 5
so
SM = 5
7 0
3 years ago
Read 2 more answers
A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 35 cm/s.
sashaice [31]

Answer:

The radius r of this circle as a function of the time t :

r(t)=35\times t

Step-by-step explanation:

Speed of the circular ripple = S = 35 cm/s

Radius of the ripple at time t = r

Speed=\frac{Distance}{Time}

35cm/s=\frac{r}{t}

r=35 cm/s \times t

The radius r of this circle as a function of the time t :

r(t)=35\times t

3 0
3 years ago
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