1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svet-max [94.6K]
3 years ago
7

HELP PLEASE!! Write an equation in slope-intercept form for the line perpendicular to y=−4x+1 that passes through the point (−7,

1).
Mathematics
1 answer:
jekas [21]3 years ago
4 0

Answer:

slope intercept form is: y= mx +c

Step-by-step explanation:

Given : linear equation y = -4x + 1, the slope is m = -4

[you can read the slope m ,  from the equation]

rule for perpendicular slope: m1 x m2 = -1

Let the slope in the original equation equal m1, i.e. m1 = -4

therefore, -4 x m2 = -1

m2 = -1/-4

slope of perpendicular line = 1/4

so, y = 1/4 x + 1

You might be interested in
What is the answer to 5(2x-3)=15
lisov135 [29]
5(2x-3)=15
10x-15=15
10x=30
X=3
6 0
3 years ago
Read 2 more answers
50 pts!!!! Luciana's laptop has 3,000 pictures. The size of the pictures is skewed to the right, with a mean of 3.7MB and a stan
skelet666 [1.2K]

Answer:

<u></u>

  • <u>Part A: No, you cannot.</u>

<u></u>

  • <u>Part B: 0.4491</u>

Explanation:

<u>Part A:</u>

The mean of samples of symmetrical (bell shaped) distributions follow a normal distribution pattern.

Thus, for symmetrical distributions you can use the z-score tables to make calculations that permit calculate probabilities for particular values.

For <em>skewed </em>distributions, in general, the samples do not follow a normal distribution pattern, except that the samples are large.

Since <em>a sample of 20 pictures</em> is not large enough, the answer to this question is negative: <em>you cannot accurately calculate the probability that the mean picture size is more than 3.8MB for an SRS (skewed right sample) of 20 pictures.</em>

<u>Part B.</u>

For large samples, the<em> Central Limit Theorem</em> will let you work with samples from skewed distributions.

Although the distribution of a population is skewed, the <em>Central Limit Theorem</em> states that  large samples follow a normal distribution shape.

It is accepted that samples of 30 data is large enough to use the <em>Central Limit Theorem.</em>

Hence, you can use the z-core tables for standard normal distributions to calculate the probabilities for a <em>random sample of 60 pictures</em> instead of 20.

The z-score is calculated with the formula:

  • z-score = (value - mean/ (standard deviation).
  • z=(x-\mu )/\sigma

Here, mean = 3.7MB, value = 3.8MB, and standard deviation = 0.78MB.

Thus:

         z=(3.7M-3.8MB)/(0.78MB)=-0.128

Then, you must use the z-score table to find the probability that the z-score is greater than - 0.128.

There are tables that show the cumulative probability in the right end and tables that show the cumulative probability in the left end of a normal standard distribution .

The probability that a z-score is greater than -0.128 is taken directly from a table with the cumulative probability in the left end. It is 0.4491.

4 0
3 years ago
Find the measure of the smaller angle in the figure
Nataliya [291]
You know that the two angles make up a perfectly flat line, which is a 180<span>° angle. So we can create the equation:'

3x + 10 = 12x

Now solve for 'x'. Subtract 3x to both sides:

10 = 9x

Divide 9 to both sides:

x = 10/9

We want to find the smaller angle, so put this value in for 'x' in '3x + 10':

3x + 10

3(10/9) + 10

30/9 + 10

13 1/3</span><span>°</span>
6 0
3 years ago
Help me there’s a time limit on this
NikAS [45]
11 hours bc 5 times 11 equals 55
7 0
2 years ago
Read 2 more answers
Hey can someone plz help me with this??? *cute eyes*
Leto [7]

Answer:

A. 5

B. -5, 5

C. 5, 5

Step-by-step explanation:

A. |-6+(-1)| = 5

B. -6-(-1)=-6+1=-5

-1-(-6)=-1+6=5

C. |-6-(-1)|=|-6+1|=5

|-1-(-6)|=|-1+6|=5

5 0
3 years ago
Other questions:
  • Plz ANWSER 1-4 it’s way over due and I’ll mark brainest also worth 100 points
    7·2 answers
  • Consider the following equations: −x − y = 1 y = x + 3 If the two equations are graphed, at what point do the lines representing
    7·1 answer
  • 2( 4c - 7 ) &lt; 8 ( c - 1) - 6 if possible
    12·1 answer
  • Approximately, where do the numbers in the first file go in the second file's number line?
    12·2 answers
  • Lamar and Jessie are multiplying 7/9 * 4/9
    14·1 answer
  • Factor completely x3 – 8 A) (x – 2)(x2 + 2x + 2) B) (x – 2)(x2 + 2x + 4) C) (x – 2)(x2 + 4x + 4) D) (x – 2)(x2 + 4x + 8)
    14·1 answer
  • Which of the following are polynomials? Check all that apply.
    10·1 answer
  • Please answer that for me i will mark brainliest<br> If X was 30, y would be equal to what number?
    5·1 answer
  • Please help me asap!!!
    11·1 answer
  • 175% of 8 is what number?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!