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
Roman55 [17]
3 years ago
10

Solve the following system of equations using the substitution method.

Mathematics
1 answer:
eduard3 years ago
7 0
The correct answer would be D, (3,-4). For the first equation, x=2y+11 would be 3=2(-4)+11 which turns to 3=-8+11 which equals 3=3 so it’s true. For the second equation, 7x+2y=13 which becomes 7(3)+2(-4)=13 making it 21-8=13 which turns into 13=13 so this is true as well.
You might be interested in
Clarise evaluated this expression. (66.3 – 14.62) ÷ 0.6 – 0.22 (51.68) ÷ 0.6 – 0.22 (51.68) ÷ 0.42 51.68 ÷ 0.16 32.3 Which error
Gennadij [26K]
Let's go through this problem step by step while bearing in mind the concept of PEMDAS.

Step 1: (66.3-14.62)/0.6-0.2^{2}
Declaration of the expression. Nothing wrong here yet.

Step 2: (51.68)/0.6-0.2^{2}
Clarise evaluated what's inside the parenthesis first - which was the right thing to do! There are no mistakes in this step.

Step 3: (51.68)/0.4^{2}
In this step she subtracted first. This should not be the case! PEMDAS tells us that the exponents and division gets higher priority than subtraction. This is therefore the first mistake Clarise makes.

Step 4: (51.68)/0.16
In this step Clarise evaluates the exponent. This does not violate any rules (relative to the previous expression) since PEMDAS tells us that exponents take higher priority than division.

Step 5: 3.23 (Clarise's final answer)
In Clarise's final step, she manages to get the wrong answer! Dividing 51.68 by 0.16 would give us 323. This is another mistake of Clarise.

Looking at the choices, we can now identify what mistakes Clarise made:
-She subtracted before evaluating the exponents
-She subtracted before she divided
-She divided incorrectly
7 0
3 years ago
Read 2 more answers
63 :(5X - 3X - 1)=21:3​
Crazy boy [7]

Answer:

x = 5

Step-by-step explanation:

Given that,

63:(5x-3x-1)=21:3\\\\or\\\\\dfrac{63}{(5x-3x-1)}=\dfrac{21}{3}\\\\\dfrac{63}{(2x-1)}=7

Cross multiplying both sides,

63=7(2x-1)\\\\9=2x-1

Taking like terms together,

10=2x\\\\x=5

So, the value of x is equal to 5.

8 0
3 years ago
Help plzzzzzzzzzzzzz
ZanzabumX [31]
1 1/2 * 3/4 = 

Change 1 1/2 to an improper fraction = 3/2

3/2 * 3/4 = 6/4 * 3/4

6/4 * 3/4 = 18/4 = 4 2/4 = 4 1/2

The answer is 4 1/2.

Hope this helped☺☺
4 0
3 years ago
A discrete random variable is a variable that is randomly chosen and can take
Colt1911 [192]

Answer:

false

Step-by-step explanation:

4 0
2 years ago
Does anyone know it?
SCORPION-xisa [38]

Answer:

i know the ANSWER!

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Which statement is true about the polynomial 5s6t2 + 6st9 – 8s6t2 – 6t7 after it has been fully simplified? It has 3 terms and a
    16·1 answer
  • Rosa drew a triangle with sides measuring 36 inches, 20 inches, and 24 inches. What type of triangle did Rosa draw?
    8·2 answers
  • Determine if the statement is true or false. Any linear system with more variables than equations cannot have a unique solution.
    13·1 answer
  • Find the product mentally.
    7·2 answers
  • Please help please help
    5·1 answer
  • Hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
    8·1 answer
  • A ray can intersect a circle in __________.
    8·2 answers
  • Another sequence is defined by a term to term sequence where k and r are constants
    10·1 answer
  • Dose anyone on this app know how to figure this out ?
    15·1 answer
  • O
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!