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
My name is Ann [436]
2 years ago
9

Use cramers rule to solve each system of equations :

Mathematics
1 answer:
Snowcat [4.5K]2 years ago
5 0

Answer:

just follow the rules

Step-by-step explanation:

Cramer's rule applies to the case where the coefficient determinant is nonzero. ... A simple example where all determinants vanish (equal zero) but the system is still incompatible is the 3×3 system x+y+z=1, x+y+z=2, x+y+z=3.

Write the system as a matrix equation. ...

Create the inverse of the coefficient matrix out of the matrix equation. ...

Multiply the inverse of the coefficient matrix in the front on both sides of the equation. ...

Cancel the matrix on the left and multiply the matrices on the right.

You might be interested in
?????????????????????
AleksandrR [38]
I would say your answer is false because my mom works on houses and she never does this....

Hope I Helped (:
5 0
3 years ago
Read 2 more answers
The town librarian bought a combination of new-release movies on DVD for $20 and classic movies on DVD for $8. Let
Artyom0805 [142]

Answer:

x = 16, y = 22: So C.

Step-by-step explanation:

3 0
2 years ago
Hey, can I get some help with this?
algol [13]

Answer:

1.23E7

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
In a certain​ country, the mean birth weight for boys is 3.27 ​kg, with a standard deviation of 0.51 kg. Assuming that the distr
Degger [83]

Answer:

0.066

Step-by-step explanation:

We solve this question using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation

For the question

mean birth weight for boys is 3.27 ​kg, with a standard deviation of 0.51 kg.

x = 2.5

Hence:

z = 2.5 - 3.27/0.51

z = -1.5098

Probability value from Z-Table:

P(x ≤ 2.5) =P(x < 2.5) = P(x = 2.5) =

=0.065547

Therefore, the proportion of baby boys that are born with a low birth weight is 0.066

5 0
3 years ago
What is the general term equation, an, for the arithmetic sequence 5, 1, â3, â7, . . . , and what is the 21st term of this seque
Valentin [98]
Hello :

the nth term ( general term  of an arithmetic sequence is :

An =A1+(n-1)d   ....a common difference is : d , A1 : the first terme
A1 = 5    and : d = 1 - 5 = - 4    n = 21
A21 = 5 + (21 -1)(-4)
A21 = 5 - 80 = -75

<span>                                      
</span>

3 0
3 years ago
Other questions:
  • Find the length of the missing side of the right triangle.<br> 5 ft.<br> 12 ft.<br> What’s x
    13·1 answer
  • HELP PLA BRAINLIEST ANSWER TO MOST CORRECT!!!
    5·1 answer
  • The truck driver drove 120 miles in 13/4 hours what is the speed of the truck is in miles per hour
    5·1 answer
  • In Exercises 15 and 16, tell whether the triangle with the given side
    9·1 answer
  • Please someone answer for this question
    11·2 answers
  • 21 − 3 ) ÷ 32 =<br> 72 × ( 6 ÷ 3 ) =<br> 17 + 15 ÷ 3 − 24 =<br> ( 8 + 56 )÷ 4 − 32 =
    14·1 answer
  • Need help y’all. Plz help me :(
    9·1 answer
  • Write the equation of the line parallel to the y axis at a distance of 7 units form it to is left​
    5·1 answer
  • Whats 1/3 to the third power?
    12·2 answers
  • At a walk-in interview, 12% of candidates can be selected, and 28% of candidates can be put on hold for the next hiring date. If
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!