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
sp2606 [1]
2 years ago
6

What is the solution to the system below? x + 3y = 0 2x - y = -7

Mathematics
1 answer:
sasho [114]2 years ago
8 0

( x, y ) = ( -3, 1 )

hope it helps!

You might be interested in
,/,/,/,//,/,/,/,//,,,,,,///,,/,///,/,,/,,/,/,/,/,,
vladimir2022 [97]

Answer :

hmmm ... :0 ?

3 0
2 years ago
Read 2 more answers
The data given below contain the state cigarette tax​ (in $) for all 20 regions of a country.
g100num [7]

Answer:

(a) \bar x= 1.583 -- Population Mean

(b) s = 1.032 --- Population standard deviation

(c) See Explanation

Step-by-step explanation:

Given:

Cigarette tax for 20 regions

Solving (a): The population mean

This is calculated as:

\bar x = \frac{\sum x}{n}

\sum x = 1.36 + 1.70 + 2.50 + 0.45 + 1.18 + 0.64 + 3.46 + 0.57 + 2.00 + 0.80 + 1.60 +0.98 + 0.36 + 2.24 + 4.35 + 0.62 + 2.70 + 1.78 + 1.53 + 0.84

\sum x = 31.66

n = 20

So, we have:

\bar x= \frac{31.66}{20}

\bar x= 1.583

Solving (b): The population standard deviation

This is calculated as:

s = \sqrt{\frac{\sum( x - \bar x)^2}{n}

\sum (x -\bar x)^2 = (1.36 - 1.583)^2 + (1.70 - 1.583)^2+ (2.50 - 1.583)^2+ (0.45 - 1.583)^2+ (1.18 - 1.583)^2+ (0.64 - 1.583)^2+ (3.46 - 1.583)^2+ (0.57 - 1.583)^2+ (2.00 - 1.583)^2+ (0.80 - 1.583)^2+ (1.60 - 1.583)^2+(0.98 - 1.583)^2+ (0.36 - 1.583)^2+ (2.24 - 1.583)^2+ (4.35 - 1.583)^2+ (0.62 - 1.583)^2+ (2.70 - 1.583)^2+ (1.78 - 1.583)^2+ (1.53 - 1.583)^2+ (0.84- 1.583)^2

\sum (x -\bar x)^2 = 21.29222

So:

s = \sqrt{\frac{21.2922}{20}

s = \sqrt{1.06461}

s = 1.032

Solving (c):

Population mean tells the average amount while the standard deviation represents the spread from the calculated mean

Option (4) is correct

6 0
3 years ago
Nate and Maya are building model cars. Maya's car is 3 inches less than 2 times the length of Nate's car. The sum of the lengths
frez [133]

Answer:

x+2x-3

because nates car is x and mayas is 2x-3

7 0
2 years ago
What is the constant proportionality of y=32x-4
alexira [117]
32 is the constant because it doesn’t have a letter
4 0
3 years ago
Read 2 more answers
Where do you get the 2/5 and 3/5 from
-Dominant- [34]

Answer:

we can get 3/2 as the answer

5 0
2 years ago
Other questions:
  • A square has a side length of 5 yards. What is its area in square​ feet? Use pencil and paper. Show two ways to find the answer.
    14·1 answer
  • What is 9 1/10 as a improper fraction?
    6·2 answers
  • Please include how you got your answer.
    9·1 answer
  • Complete this sentence. The melting point of a sample will ____________ when the size of the sample increases.
    13·1 answer
  • How many solutions are there?<br><br> 8x+47 = 8(x+5)<br><br> A) 1<br> B) 0<br> C) infinitely many
    15·2 answers
  • POLYNOMIAL help please.
    10·1 answer
  • suppose your friends parents invest 10,000 in an account paying 6% compounded annually.what will the balance be after 5 years
    5·1 answer
  • Umm... what is 2% of 350.... asking for a friend
    5·2 answers
  • Two BLARBs equal one BLABB. Three BLABBs equal ten BLALBs, and one BLALB equals two BABs. How many BABs equal 6 BLARBs?
    5·1 answer
  • If (-2,3), 3x-2ky+4=0 find the value of k
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!