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ollegr [7]
3 years ago
13

Solve this to help me

Mathematics
1 answer:
Mrac [35]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Hope I helped

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Exhibit 15-2A regression model between sales (y in $1000s), unit price (x1 in dollars) and television advertisement (x2 in dolla
Semmy [17]

Answer:

Sales are expected to increase positively.

Step-by-step explanation:

The model is y =7-3*X1+5*X2

Here, y is the depended variable and X1 and X2 are independent variable.  

Holding the unit price constant X2 (television advertisement) is increase by $1 dollar

SSR= 3500

SSE=1500

So, TSS = SSR+SSE = (3500+1500) = 5000

Now r^2= 1 - (SSR/TSS) = 1 - (3,500/5,000) = 1 - 0.70 = 0.30

So, the sample correlation coefficient (r) = (0.3)^(1/2) = 0.547

We can conclude that sample correlation indicates a strong positive relationship.

7 0
3 years ago
Eric works mowing lawns and babysitting. He earns $7.90 an hour for mowing and $6.80 an hour for babysitting. How much will he e
slega [8]

Answer:

$38.40

The drawings will help

7 0
3 years ago
Write the equation for a line that passes through the point (2,5) and a slope of m =10 in point slope form
wlad13 [49]

Answer:

y=10x-15

Step-by-step explanation:

with the points given you know x=2 and y=5

make a new point called (x,y)

now use the formula (y-5)/(x-2)=10 (10 being the gradient)

y-5 = 10(x-2)

y-5=10x-20

add 5 to both sides

y-5+5=10x-20+5

y=10x-15

8 0
3 years ago
Read 2 more answers
Please help me solve them
deff fn [24]
Ok so the first thing to do would be get rid of the fraction. To do that multiply the ENTIRE equation but the denominator. Once all the numbers are multiplyed I think it’ll be easier for u to solve them :) or if u wanna solve them quick, download Photomath :)
8 0
3 years ago
Read 2 more answers
What is the equation of the line in slope intercept form? ILL MARK BRANLIEST ANSWER
lianna [129]

two points are (0,0) and (100, -800)

m = (y2-y1)/(x2-x1) = (-800-0)/(100-0) = -8

point slope form of the line is

y-y1 = m(x-x1)

y-0 = -8 (x-0)

y=-8x

this is in slope intercept form now

y=-8x


3 0
3 years ago
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