All categories

4 years ago

Write the equation of the line that passes through the points (-1,-5) and (2,4).

Mathematics

2 answers:

rusak2 [61]4 years ago

7 0

The answer is: y=3x+1

Art [367]4 years ago

3 0

Answer:

y=3x+1

Step-by-step explanation:

First, we have to find the slope. $\frac{4-(-5)}{2-(-1)}$ This comes out to 9/3. This becomes 3. Now we need to find the y-intercept. Now write out how to find the answer. 4=3(2)+b. 4=3+b. Subtract 3 from both sides to get 1=b. Now write out the equation. y=3x+1

You might be interested in

Can I get some help we just started this today

Alja [10]

Answer:

-2

Step-by-step explanation:

The slope of a line tells us how y responds to a change in x. If the slope is 2, it means that for every time x increases by 1, will will go up by 2.

We can calculate slope from a line, or with two given points. I used points (0,4) and (3,-2). Slope is the "Rise/Run."

The Rise: (-2 - 4) = -6

The Run: (3 - 0) = 3

Slope = Rise/Run = (-6/3) = -2

6 0

3 years ago

A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing 150 pound requires

mart [117]

9514 1404 393

Answer:

182 lbs

Step-by-step explanation:

You can write the proportion for the required patient weight (w) as ...

weight/medicine = w/(174.72 mg) = (150 lb)/(144 mg)

w = (150 lb)(174.72/144) . . . . . multiply by 174.72 mg

w ≈ 182 lb

The patient's weight is 182 pounds.

5 0

3 years ago

HELP, it’s due in 30 minutes when my class ends. Will give brainliest

ziro4ka [17]

Answer:

Because elena must have went higher above ground

Step-by-step explanation:

4 0

3 years ago

PLEASE HELP!! SIMPLE QUESTION!!

alexira [117]

The answer is, -7.4. :) Originally how it came out to be was -7.416198487. So as long as you're rounding up, since the one is below five then the 4 shall remain the same.

Hope I helped out! Good luck

8 0

3 years ago

Read 2 more answers

The time taken to complete a motorcycle race is normally distributed, with an average time (µ) of 2.5 hours and a standard devia

torisob [31]

Using the normal distribution, there is a 0.5398 = 53.98% probability that a randomly selected cyclist will take at least 2.45 hours to complete the race.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

$\mu = 2.5, \sigma = 0.5$

The probability that a randomly selected cyclist will take at least 2.45 hours to complete the race is <u>one subtracted by the p-value of Z when X = 2.45</u>, hence:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{2.45 - 2.5}{0.5}$

Z = -0.1

Z = -0.1 has a p-value of 0.4602.

1 - 0.4602 = 0.5398.

0.5398 = 53.98% probability that a randomly selected cyclist will take at least 2.45 hours to complete the race.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0

2 years ago