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4 years ago

Data collected on the discharge of the Colorado River and speed are given in the table:

Mathematics

2 answers:

Julli [10]4 years ago

8 0

Answer:

0.67; The least-squares regression line, given by ŷ = 3.95 + 0.67x, is not a good fit for the data.

Step-by-step explanation:

Plot the data in a spreadsheet and insert a trendline. The line of best fit is y = 0.67x + 3.95. The r² value is 0.67.

balandron [24]4 years ago

6 0

Answer:

D. 0.67; The least-squares regression line, given by ŷ = 3.95 + 0.67x, is not a good fit for the data.

Step-by-step explanation:

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Graph this line using the slop and y intercept. y=1/2x +4

trasher [3.6K]

Answer:

Download photomath you can take a picture of the equation and it will show you how it should be graphed.

5 0

3 years ago

Read 2 more answers

In a bag of keys, there are 12 silver keys, 5 black keys, 11 copper keys, and 2 painted keys of various colors. One key is drawn

umka2103 [35]

The total number of keys equals:
12 + 5 + 11 + 2 = 30 keys

The probability to pick a sliver key is:
12/30 = 2/5

The probability to pick a copper key is:
11/30

Hope that helps

7 0

3 years ago

100 POINTS IF U GET DIS RIGHT!

mixer [17]

Answer:

$- \frac{3}{5}$

Step-by-step explanation:

slope-intercept form: y = mx + b

y = (x , y)

m = slope = $-\frac{3}{5}$

x = (x , y)

b = y-intercept = $- \frac{7}{9}$

With this given information, your slope will be $-\frac{3}{5}$

5 0

3 years ago

Read 2 more answers

A pine cone drops from a tree branch that is 36 feet above the ground. The function h = –16t2 + 36 is used. If the height h of t

scoray [572]

Notice that the height of the pine cone when it hits the ground is zero. So, to find the tame it takes for the pine cone to hit the ground, we just need to replace the height, $h$ , with 0 in the function, and solve for time $t$ :
$h=-16t^2+36$
$0=-16t^2+36$
$-36=-16t^2$
$t^2= \frac{-36}{-16}$
$t^2= \frac{9}{4}$
$t=(+/-) \sqrt{ \frac{9}{4} }$
$t=(+/-) \frac{3}{2}$
$t=(+/-)1.5$
Since time cannot be negative, the solution is $t=1.5$ seconds.

Since 1.5 second is significantly less than 2 seconds, we can conclude that <span>2 seconds is not a reasonable answer to this model.</span>

6 0

3 years ago

Read 2 more answers

Complete the data set with one value so that the mean of the data is 13.<br><br> 10,14,8,16,12,____

Allisa [31]

(10 + 14 + 8 + 16 + 12 + x ) /6 = 13
(60 + x) / 6 = 13
60 + x = 13 * 6
60 + x = 78
x = 78 - 60
x = 18 <=====

3 0

3 years ago