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
belka [17]
4 years ago
9

Y = -2x + 3, y = -x - 1

Mathematics
2 answers:
Art [367]4 years ago
7 0
Since these are both set equal to y the easiest way to solve is to set the equations equal to each other.
-2x + 3= -x-1
add 2x to both sides
3= x-1
add 1 to both sides
4=x
denis23 [38]4 years ago
7 0
4,-5 is your x and y
You might be interested in
A manager wishes to determine the relationship between the number of miles traveled​ (in hundreds of​ miles) by her sales repres
kati45 [8]

Answer:

y=3.53 x +37.92  

And for 0 miles if we use the model we got:

y(0)= 3.53*0 +37.92 = 37.92

But for this case. No is not reasonable for a representative to travel o miles and have a positive amount of sales.

Step-by-step explanation:

For this case we assume the following data:

Miles traveled (X): 2,3,10,7,8,15,3,1,11

Sales (Y): 31,33,78,62,65,61,48,55,120

We want to found a linear model like this one : y = mx+b. Where:

m=\frac{S_{xy}}{S_{xx}}  

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

With these we can find the sums:  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=582-\frac{60^2}{9}=182  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=4329-\frac{60*553}{9}=642.33  

And the slope would be:  

m=\frac{642.33}{182}=3.529  

Nowe we can find the means for x and y like this:  

\bar x= \frac{\sum x_i}{n}=\frac{60}{9}=6.667  

\bar y= \frac{\sum y_i}{n}=\frac{553}{9}=61.444  

And we can find the intercept using this:  

b=\bar y -m \bar x=61.444-(3.529*6.667)=37.917  

So the line would be given by:  

y=3.53 x +37.92  

And for 0 miles if we use the model we got:

y(0)= 3.53*0 +37.92 = 37.92

But for this case. No is not reasonable for a representative to travel o miles and have a positive amount of sales.

8 0
3 years ago
Evaluate rg + 2d when r = 3, g = 5, and d = 2
qwelly [4]

Answer:

rg+2d= 12

Step-by-step explanation:

(3+5)+2(2)

8+4=12

3 0
3 years ago
Lillian has the following coins.
iris [78.8K]

Answer:

what coins does she have..? or did the question not state it,

Step-by-step explanation:

7 0
3 years ago
I need some help on area​
Hoochie [10]

Answer:

Step-by-step explanation:

If the lower right corner were present, the area would simply be

A = L * W

A = 16 * 8

A = 128

Since the lower right corner is not present, it's area is not there.

A = L * W

A = 10 * 3

Area = 30 cm^2

So the area of the green figure is

Area = 128 - 30

Area = 98 cm^2

6 0
4 years ago
A car travelled at 16km an hour . How long did it travel in 2 1/2 hours
Zanzabum

I would travel 40hours.  16 times two is 32 plus 8 is 40.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A bank contains 35 coins, all nickels and quarters. The total value of coins is $8.15. How many of each coin does the bank conta
    10·1 answer
  • Marcus plots the point (4, 7) in Quadrant I on the coordinate plane. Nicole then plots the point (4, –3) in Quadrant IV of the s
    8·2 answers
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!<br><br> Identify the factoring pattern:
    14·1 answer
  • What is 14.1% of the 132 mL rounded to the nearest 10th
    8·1 answer
  • Graph the inequality on the number line. x≥−3 1/2
    14·1 answer
  • Luisa is a deep-sea diver. Today she descended to a depth below -21 feet. What phrase describes the distance of Luisa’s dive?
    6·1 answer
  • What equation is equivalent to 2+3(2x+4)=13
    10·1 answer
  • An expression is shown below: 3pf2 − 21p2f + 6pf − 42p2 Part A: Rewrite the expression so the GCF is factored completely.
    7·1 answer
  • What is the slope of the line that passes through (−2, −4) and (3, 7) ?
    15·2 answers
  • The figure below is not drawn to scale. ABCD is a parallelogram, Find
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!