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
viktelen [127]
3 years ago
11

SYSTEM OF LINEAR EQUATIONS

Mathematics
2 answers:
olganol [36]3 years ago
8 0

Answer:

x = 10    y = -1

x = − 13/5    y = 7/5

x = -1     y = 3

Step-by-step explanation:

Effectus [21]3 years ago
4 0

Answer:

Step-by-step explanation:

x-y=11

2x+y=19

---------------

x=y+11

2(y+11)+y=19

2y+22+y=19

3y+22=19

3y=19-22

3y=-3

y=-3/3

y=-1

x-(-1)=11

x+1=11

x=11-1

x=10

Answer: x=10, y=-1. (10, -1).

-----------------------------------------

-6x+5y=1

6x+4y=-10

-------------------

9y=-9

y=-9/9

y=-1

6x+4(-1)=-10

6x-4=-10

6x=-10+4

6x=-6

x=-6/6

x=-1

Answer: x=-1, y=-1. (-1, -1).

------------------------------------

2x+9y=25

-4x-9y=-23

-------------------

-2x=2

x=2/-2

x=-1

2(-1)+9y=25

-2+9y=25

9y=25-(-2)

9y=25+2

9y=27

y=27/9

y=3

Answer: x=-1, y=3. (-1, 3).

You might be interested in
In Nebraska, Mr. Dukarelli's 11th grade class consisting of 27 students was surveyed and 34.6 percent of the students reported t
postnew [5]

95141 1404 393

Answer:

  b.  28,300

Step-by-step explanation:

The estimated number of 11th grade students in the state is ...

  (1600 classes)(27 students/class) = 43,200

About 34.6% are estimated to have 2 or more siblings, so the remaining 100%-34.6% = 65.4% are estimated to have fewer than 2 siblings.

Translated to a number of students, that percentage is ...

  0.654 × 43,200 = 28,252.8 ≈ 28,300

A good estimate of the number of students with fewer than 2 siblings is 28,300.

8 0
3 years ago
FIND M∠R (GIVING BRAINLIEST, 25 PTS)
riadik2000 [5.3K]

Answer:

<h2>76</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • triangles
  • equation
  • PEMDAS
<h3>given:</h3>
  • M\angle T=2x+2
  • M\angle R=3x+1
<h3>tips and formulas:</h3>
  • this is an isosceles triangle since two sides are equal therefore \angle T=\angle S
  • a triangle contains 180°
<h3>let's solve:</h3>

according to the question

2x+2+2x+2+3x+1=180

solve:

  1. collect like terms:7x+5=180
  2. substract 5 from both sides:=>7x+5-5=180-5=>7x=175
  3. divide both sides by 7: =>7x/7=175/7
  • x=25

given:

M∠R=3x+1

substitute the value of x

3×25+1

75+1

76

7 0
3 years ago
Read 2 more answers
Hey can you please help me posted picture of question
Galina-37 [17]
Since the events are dependent, the probability of occurrence of event B will impact the probability of occurrence of event A. So we will be using the formula of conditional probability to find P(A ∩ B).

P(A|B)= \frac{P(A*B)}{P(B)} \\  \\ &#10;P(A*B)=P(A|B)P(B)

Here P(A*B) indicates P(A ∩ B).

Using the values, we get:

P(A ∩ B) = 0.25 x 0.4 = 0.1

Thus, option A gives the correct answer.
5 0
3 years ago
HELP MEE I HAVE TO TURN IT IN TOMORROW
schepotkina [342]
The answer would be 80
7 0
3 years ago
What is the value of the expression when y= 22?<br> Needa answer asap
Nikitich [7]

Answer:

y=22/1

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • What is the relationship between the central angle and the interior angle?
    10·1 answer
  • PLZZ HELP I'M SO CONFUSED
    14·1 answer
  • What is the value of 2+3^2-|-4 |
    9·2 answers
  • Bryan was given the equation y= -5x+3. He says the rate of change is 3 and the initial value is -5. Is Bryan correct? If not, co
    5·1 answer
  • What is the answer to 1/9x39
    7·2 answers
  • Han divided 3 10 by 6. His work is shown below. Is han's answer correct? 3 10  ÷ 6 =  6 10  ÷ 6 =  1 10
    14·1 answer
  • Create a sample of 10 numbers that has a mean of 8.6.
    11·1 answer
  • Brianna answered the question on the test about exponent rules with the answer you see to the right of the equal sign, but she g
    9·2 answers
  • Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
    8·2 answers
  • !!!!!!Need Help ASAP!!!!!!!!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!