I believe these are the answers.
A
i) (y=5) x=6
ii) (y = -1) x=0
iii) (y = -2) x = -1
B
i) (x = -4) y = -5
ii) (x=2) y=1
iii) (x=5) y=4
Sorry if these are wrong but I hope the help.

6 0

3 years ago

Two angle measures of a quadrilateral are 34° and 66°. What could the measure of the other two angles be?

Anika [276]

Answer:

139 and 121

Step-by-step explanation:

139 + 121 + 34 + 66 = 360

the first time i did this i kept getting 361 for some reason must have put in an extra number

3 0

3 years ago

Mira has breakfast at a restaurant. She leaves a 20\%20% tip of \$1.80$1.80. What is the price of Mira's breakfast, before tip?

ycow [4]

Answer

$9

Solution

20%:$1.80
1%:$0.09
100%:$9.00

7 0

4 years ago

Read 2 more answers

A regression analysis between sales (y in $1000) and advertising (x.in dollars) resulted in the following equation: ỹ= 30,000 +

Dafna11 [192]

Answer:

Correct answer is option d. increase of $1 in advertising is associated with an increase of $4000 in sales.

Step-by-step explanation:

Given the equation of regression analysis is given as:

$y= 30,000 + 4x$

where $x$ is the cost on advertising in Dollars.

and $y$ is the sales in Thousand Dollars.

To find:

The correct increase in sales when there is increase in the advertising cost.

Solution:

Suppose there is an increase of $\$1$ in the advertising cost.

Let the initial cost be $x$ then the cost will be $(x+1)$ .

Initial sales

$y= 30,000 + 4x$ ....... (1)

After increase of $1 in advertising cost, final cost:

$y'= 30,000 + 4(x+1)\\\Rightarrow y' = 30,000+4x+4\\\Rightarrow y' = 30,004+4x ..... (2)$

Subtracting (2) from (1) to find the increase in the sales:

$y'-y=30004+4x-30000-4x = 4$

The units of sales is Thousand Dollars ($1000).

So, increase in sales = $4 \times1000 = \bold{\$4000}$

So, correct answer is:

d. increase of $1 in advertising is associated with an increase of $4000 in sales.

7 0

3 years ago