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3 years ago

Write the equation of a line that passes through the points (-3,7) and (3,3)

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

7 0

(-3,7) and (3,3)

Slope = (7 - 3)/(-3 - 3) = -4/6 = -2/3

Equation:

y - 3 = -2/3 (x - 3)

y - 3 = -2/3 x + 2

y = -2/3 x + 1

Answer

y = -2/3 x + 1

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Simplify: −3 • −26 A. −78 B. −68 C. 68 D. 78

hammer [34]

-3 x -26 = 78

meaning the answer is D.

The reason the answer is D, is because two negatives when multiplied or divided become positive. Only when multiplied or divided does this occur.

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2 years ago

Someone please help me, use a variable to represent the situation, and solve the equation using inverse operations.

Scorpion4ik [409]

Answer:

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3 years ago

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Ellie is 5 times as old as her sister Emma. In 2 years Ellie will be 3 times as Emma. How old is Emma now?

cricket20 [7]

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3 years ago

Nicholas started a canned-food drive at school. The equation representing this is y = 235x + 15, where x is the number of days,

Olenka [21]

Answer:

well, 11 days

Step-by-step explanation:

if you were to put take out the y and put 2600 in the y place (2600=235x+15)

you solve that, and will come to 11 days

further explaining:

2600-15 = 2585

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( I'm not sure if this is right, the question is worded weird and almost doesn't make sense)

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3 years ago

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The proportion of left handed people in the population is about 0.10. Suppose a random sample of 300 people is observed. (a) Wha

pantera1 [17]

Answer: $(\hat{p})\sim N(0.10,\ 0.017)$

Step-by-step explanation:

Sampling distribution of the sample proportion $(\hat{p})$ :

$(\hat{p})\sim N(p,\ \sqrt{\dfrac{p(1-p)}{n}})$

The sampling distribution of the sample proportion $(\hat{p})$ has mean = $\mu_{\hat{p}}=p$ and standard deviation = $\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$ .

Given : The proportion of left handed people in the population is about 0.10.

i.e. p=0.10

sample size : n= 300

Then , the sampling distribution of the sample proportion $(\hat{p})$ will be :-

$(\hat{p})\sim N(0.10,\ \sqrt{\dfrac{0.10(1-0.10)}{300}})$

$(\hat{p})\sim N(0.10,\ \sqrt{0.0003})$

$(\hat{p})\sim N(0.10,\ 0.017)$ (approx)

Hence, the sampling distribution of the sample proportion $(\hat{p})$ is $(\hat{p})\sim N(0.10,\ 0.017)$

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3 years ago