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
What is the likelihood that the children in square 2 will have earlobes that are not attached?
notka56 [123]
Answer : 2/4 children will have earlobes that are not attached
4 0
3 years ago
Find 2 integers whose sum is -7 and whose product is 1.2
RSB [31]
X = - 7 - y ( - 7 - y ) y = 12y = - 3 or y = - 4x = - 7 - ( - 3) or x = - 7 - ( - 4)( - 4, - 3)( - 3, - 4)
7 0
3 years ago
Factor the quadratic expression completely<br> 6x^2 – 28x + 32
Fiesta28 [93]
Answer: 2(x-2)(3x-8)

7 0
3 years ago
The Japanese 5 yen coin has a hole in the middle. What are the possible ways to calculate the difference between the distances f
ipn [44]

Answer:a) Subtract the two diameters and multiply by 3.14

d) Subtract the circumference of the hole from the circumference of the coin

Step-by-step explanation:

i just did the assignment

9 0
3 years ago
Read 2 more answers
What is the simplified form of StartRoot StartFraction 72 x Superscript 16 Baseline Over 50 x Superscript 36 Baseline EndFractio
aalyn [17]

Answer:

  StartFraction 6 Over 5 x Superscript 10 Baseline EndFraction

Step-by-step explanation:

Apparently you want to simplify ...

  \sqrt{\dfrac{72x^{16}}{50x^{36}}}

The applicable rules of exponents are ...

  (a^b)(a^c) = a^(b+c)

  1/a^b = a^-b

  (a^b)^c = a^(bc)

__

So the expression simplifies as ...

  \sqrt{\dfrac{72x^{16}}{50x^{36}}}=\sqrt{\dfrac{36}{25x^{36-16}}}=\sqrt{\dfrac{36}{25x^{20}}}\\\\\sqrt{\left(\dfrac{6}{5x^{10}}\right)^2}=\boxed{\dfrac{6}{5x^{10}}}

9 0
3 years ago
Other questions:
  • I don’t understand number 89! please help I have a test tomorrow!
    11·1 answer
  • Merlin Industries bought a laptop for $2,100. It is expected to depreciate at a rate of 14% per year. What will the value of the
    8·2 answers
  • The Line Of Symmetry Divides A Design So That Every Point On One Side Of The Line _____ A Point On The Other Side Of It. A. Coin
    13·2 answers
  • Robert stands atop a 1,380-foot hill. He climbs down, reaching the bottom of the hill in 30 minutes. What is Robert’s average ra
    10·1 answer
  • I got 6 and 7 I just need 8 and 9.​
    12·1 answer
  • What's 3/7 times 3/7?
    15·2 answers
  • What is the next term of the arithmetic sequence? 3,9,15,
    6·1 answer
  • Solve the following equation using the quadratic formula.
    7·1 answer
  • A 97% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina
    14·1 answer
  • Is y5 -25 difference of squares
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!