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
garik1379 [7]
3 years ago
9

X + 2y = 5 x - 3y = 7 What is the value of the y-determinant? -2 -1 2

Mathematics
1 answer:
grandymaker [24]3 years ago
5 0

Answer:

y-determinant = 2

Step-by-step explanation:

Given the following system of equation:

  • x + 2y = 5
  • x - 3y = 7

Let's represent it using a matrix:

\left[\begin{array}{ccc}1&2\\1&-3\end{array}\right] = \left[\begin{array}{ccc}5\\7\end{array}\right]

The y‐numerator determinant is formed by taking the constant terms from the system and placing them in the y‐coefficient positions and retaining the x‐coefficients. Then:

\left[\begin{array}{ccc}1&5\\1&7\end{array}\right]

y-determinant = (1)(7) - (5)(1) = 2.

Therefore, the y-determinant = 2

You might be interested in
Malcolm has $638.54 in his checking account. He must maintain a $500 balance to avoid a fee. He wrote a check for $159.50 today.
gogolik [260]

Answer:

638.54-159.50+×> 500

Choose 3

Step-by-step explanation:

638.54-159.50=488.04

So the number added must make the value greater or equal to 500

7 0
3 years ago
−4p + 9 = −5 <br> what is the answer
12345 [234]
Answer is P=3.5 or p=7/2

They are both correct


7 0
2 years ago
Read 2 more answers
PLEASE HELP! SUPER EASY QUESTION! THANK YOU!
kobusy [5.1K]

Answer:

Step-by-step explanation:

a+pR^2-2pr^2, since R=15 and r=7.5

A=225p-112.5p

A=112.5p

a= 353.25ft^2

8 0
3 years ago
Read 2 more answers
At Edwards Middle School there are 8 teachers for every 136 students. There are 850 students enrolled at the school. How many te
In-s [12.5K]

Answer:

50

Step-by-step explanation:

one teacher per 17 students

7 0
3 years ago
Read 2 more answers
Jonathon drove 220 miles in 4 hours. assuming that he drives at the same rate, how far will he travel in 7 hours?
Art [367]
220miles / 4 hours = 55 miles/hr

55mi/hr x 7hrs = 385 miles
3 0
3 years ago
Other questions:
  • Suppose a shipment of 160 electronic components contains 3 defective components. to determine whether the shipment should be​ ac
    12·1 answer
  • PLz help!<br> Help me with number 6!
    9·2 answers
  • Which expression below gives the average rate of change of the function g(x)= -x^2 -4x on the interval 6 ≤ x ≤ 8?
    7·1 answer
  • The entry to record the payroll tax expense would include
    14·2 answers
  • NEED ANSWER FAST PLSSS
    11·2 answers
  • Is it possible for an exponential equation to have no solutions? If so, give an example. If not, explain why.
    10·1 answer
  • 100,000 less than five hundred 60 thousand, three hundred thirteen is ___________
    7·1 answer
  • Rob is making a pizza the radius of the pizza is 21 inches what is the circumference of the pizza using 3.14 rounded to the near
    6·1 answer
  • Choose the best answer for the missing number.
    15·2 answers
  • Pls help me on #3. I been having trouble on this I’m not so good at math
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!