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
Fed [463]
3 years ago
11

Consider the system of linear equations and the matrix equations below.

Mathematics
1 answer:
gregori [183]3 years ago
4 0

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

Using Cramer's rule, the value of x is ...

  x=\dfrac{\left|\begin{array}{cc}2&3\\22&-2\end{array}\right|}{\left|\begin{array}{cc}-1&3\\4&-2\end{array}\right|}

  x = ((2)(-2) -(22)(3))/((-1)(-2) -(4)(3)) = (-4-66)/(2-12) = -70/-10

  x = 7

You might be interested in
Rachel and her cousin Lena live in different cities about 100 miles apart.On the map the two cities measure 5 inches apart . Wha
Ostrovityanka [42]
On her map 1 inch is equal to 20 miles. 

5x=100

divide both sides by 5 

x=20

5 is for the 5 inches.
x is for the unknown.
100 is the 100 miles between the cities. 

So the scale 1:20

7 0
4 years ago
Read 2 more answers
Evaluate the expression -10-6+4 divided by (-0.5)(-2)
VARVARA [1.3K]

Answer:

-12

Step-by-step explanation:

numerator: -10 - 6 + 4 = -16 + 4 = - 12

denominator: (-0.5)(-2) = 1 Try this on your calculator.

Answer

-12 / 1 = - 12

7 0
4 years ago
What is the equation of the line?
Ivahew [28]

Answer:

x=0

Step-by-step explanation:

The line is perpendicular to y axis and passes through origin. Thus it's x=0

3 0
3 years ago
7<br> B. Combine the like terms in<br> the expression shown below.<br> 3x + 5x
Vesnalui [34]

Answer:

8x or x8

Step-by-step explanation:

5 0
3 years ago
What is the slope of the line containing (-2,-5) and (4,-4)
Juli2301 [7.4K]

Answer:

1/6

Step-by-step explanation

right 6, up 1

4 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how the commutative property of addition could help you solve the equation -6x+10+8x=12-4x.​
    5·1 answer
  • Is 1/4 greater than 1/3? Why?
    12·2 answers
  • Helene drove 70 km on 4 L of gasoline. Which proportion would help determine how far she can travel on a full 30 L tank of gasol
    13·1 answer
  • What is the area of the regular hexagon with a side length of 3 cm and an apothem of 2.6 cm? A. 15.6 cm2 B. 23.4 cm,2 C. 46.8 cm
    12·2 answers
  • Claudia owns a wood house in the country worth $75,000, and the contents
    15·1 answer
  • Describe the correlation
    10·2 answers
  • Multiply.<br><br> 8.55 × 12.61<br><br> Enter your answer in the box.
    11·2 answers
  • Write the equation of a line that contains (2,−2) and perpendicular to another line with slope −1. (20 POINTS)
    5·1 answer
  • Please help ASAP, I will give brainliest!
    10·1 answer
  • 6.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!