Answer:
B
Step-by-step explanation:
2 walls are 30 x 9 and 2 walls are 20 x 9 and there are 4 units
30 x 9 = 270, 20 x 9 = 180
4(2)(270) + 4(2)(180) = 3600, so the answer is B
The mean should be about the same, because the sample is random
Answer:
She earned 11 after completing 5 chores
Step-by-step explanation:
<em>We are shown a scatter plot and the equation of best fit line. The eqaution explains the general trend of the scatterplot. Using the equation we can find the money earned for 5 chores</em>
Amount of money earned, y = 2x + 1 ---(1)
Chores Completed, x = 5
put x = 5 in eq(1)
y = 2(5) + 1
y = 11
Hello there! So, y = mx + b is in slope-intercept form, where m represents the slope, b represents the y-intercept, and y and x remain unfilled. First off, let's solve for the slope. The formula for slope is y2 - y1 / x2 - x1, where you subtract the first x and y coordinates from the second x and y coordinates. So it would be formed like this:
9 - 4 / 6 - (-4)
Let's subtract. 9 - 4 is 5. 6 - (-4) is 10. 5/10 is 1/2 in simplest form. The slope for this equation is 1/2. Now, let's find the y-intercept. We will find that by plugging one of the points into the equation and solving for b. The x and y coordinates will be filled in by that coordinate. Let's use (-4, 4) for this problem. We will also plug in the slope. In this case, the problem will look like this:
4 = (1/2)(-4) + b
Now, let's multiply 1/2 and -4 to get -2. Now, to get b by itself, subtract 2 to both sides to isolate the b. -2 + 2 cancels out. 4 + 2 is 6. b = 6. There. The equation of the line in slope-intercept form is y = 1/2x + 6.
C= ab/d
All you have to do is this! Please mark me as brainliest
