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
olga nikolaevna [1]
2 years ago
10

Use the substitution method to solve the system of equations. Choose the correct ordered pair. x + y = 11 -x = -y - 9

Mathematics
2 answers:
suter [353]2 years ago
5 0
x+y=11 \\
-x=-y-9 \\ \\
\hbox{substitute the second equation by -1} \\ \\
x+y=11 \\
x=y+9 \\ \\
\hbox{substitute y+9 for x in the first equation} \\ \\
y+9+y=11 \\
2y=11-9 \\
2y=2 \\
y=\frac{2}{2} \\
y=1 \\ \\
x=y+9 \\
x=1+9 \\
x=10 \\ \\
(x,y)=(10,1)

The answer is B.
ra1l [238]2 years ago
3 0

Answer:

B

Step-by-step explanation:

Apex

You might be interested in
Subtract. <br><br> –15 – (–12)<br><br> A.–27 <br> B.–3 <br> C.3 <br> D.27
barxatty [35]

the answer would be B.


3 0
3 years ago
Read 2 more answers
Solve the equation for 1,<br>PV, PzV2<br>TT<br>Tz=7<br>(Type a single fraction.)​
slavikrds [6]

Answer:

2/14

Step-by-step explanation:

i tried my best

6 0
2 years ago
A particular math test has eight questions and a perfect paper is worth 100 percentage points. What is the rate of change of the
Ostrovityanka [42]
100/8 = 12.5
The rate of change is 12.5
4 0
2 years ago
Which is a solution of the inequality 5≤−4x−65≤−4x−6?
lara [203]
Step 1: Add 65 to all sides

Step 2: Add 4x to all sides

Step 3: subtract 70 to all sides

Step 4: divide by 4 to all sides

Ending: x is greater than or equal to -17.5

You will end up with it saying -17.5 is greater than or equal to -2.75 but since -17.5 is not greater than -2.75 the answer to this problem is ...

No solution because the inequality that you end up with won't make sense and therefore does not work in the problem

Answer: NO SOLUTION (yayayyayay).
4 0
3 years ago
what are the mean variacne and standard deviatioon of the values? round to the nerates tenth. 11,11,3,1,11
alexdok [17]

Answer:

Mean = 8

Variance = 22

Standard deviation = 4.6904

Step-by-step explanation:

To find out Mean the formula is : total sum of data set / number of values

(11 + 11 + 3 + 1 + 11 + 11) / 6 = 48 / 6 = 8

Mean = 8

Now for variance we will form a table

x                  11     11     3      1      11      11

(x - Mean)    3     3    -5     -7      3      3  

(x - Mean)²   9     9    25    49    9      9

Now we the formula of variance =

Variance = (9+9+25+49+9+9)/(6-1) = 110/5 = 22

Variance = 22

Now we know Standard deviation = √(variance)

Therefore standard deviation = √22 = 4.6904

Hope this helps!<3

4 0
2 years ago
Read 2 more answers
Other questions:
  • Rashad had 25 stamps. He shared them equally among himself and 4 friends. Then Rashad found two more stamps in his pocket.write
    5·1 answer
  • What is the answer to x
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%2B10%7D%3D%20x-2%20" id="TexFormula1" title=" \sqrt{x+10}= x-2 " alt=" \sqrt{x+
    11·1 answer
  • The bottom one says 9/2 so please help with these questions, I have more on my profile.
    7·1 answer
  • A waiter received $3 tip. If the check totaled $25, what percent tip was received?
    5·1 answer
  • The circumference is 12 what is the radius
    9·1 answer
  • When comparing his check register to his bank statement. Donté
    5·1 answer
  • Help , i need this assignment don asap
    13·2 answers
  • If y = –2 whenx<br> 1, find xwhen y = 4
    15·2 answers
  • Verify commutative property of multiplication and addition 5 4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!