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4 years ago

Please tell me easy way I can solve for the answer

Mathematics

1 answer:

Tanya [424]4 years ago

7 0

Answer:

y+21 = -4(x-7)

Step-by-step explanation:

well first you need to find slope what is y2-y1 over x2-x1

23-(-21) ----> 23+21 = 44

-4 - 7 ---> -4 + -7 = -11

so it 44/-11 = -4 is the slope

now choose one pair of points like 7 , -21 and plug them in

y-y1 = m(slope)(x-x1)

so it be y+21 = -4(x-7)

also remember two negatives = a postitive

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3 years ago

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3 years ago

Laura is planning a party for her son. She has $50 dollars remaining in her budget and wants to provide one party favor per pers

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Answer:

The system of inequalities that represents this situation is:

x+y≥10

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Step-by-step explanation:

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x+y≥10

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6x+4y≤50

The answer is that the system of inequalities that represents this situation is:

x+y≥10

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4 years ago

Jan wants to build a circular pond in his backyard. On the blueprint, the diameter of the pond is 15.5 in. The blueprint has a s

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3 years ago

Discrete R.V. Assume a student shows up for EGR 280 completely unprepared and the instructor gives a pop quiz. Assume there are

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Answer:

a) p=0.2

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Step-by-step explanation:

a) Since each question has 5 options, all of them equally likely, and only one correct answer, then the probability of having a correct answer is 1/5 = 0.2.

b) Let X be the number of correct answers. We will model this situation by considering X as a binomial random variable with a success probability of p=0.2 and having n=6 samples. We have the following for k=0,1,2,3,4,5,6

$P(X=k) = \binom{n}{k}p^{k}(1-p)^{n-k} = \binom{6}{k}0.2^{k}(0.8)^{6-k}$ .

Recall that $\binom{n}{k}= \frac{n!}{k!(n-k)!}$ In this case, the student passes if X is at least four correct questions, then

$P(X\geq 4) = P(X=4)+P(X=5)+P(X=6)=\binom{6}{4}0.2^{4}(0.8)^{6-4}+\binom{6}{5}0.2^{5}(0.8)^{6-5}+\binom{6}{6}0.2^{6}(0.8)^{6-6}= 0.01696$

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4 years ago