3 years ago

Which matrix best represents the system of equations below?

1 answer:

6 0

$\left\{\begin{array}{ccc}-10x-9y+13z=12\\8x-7y-5z=15\\5x+4y-6z=-12\end{array}\right\\\\\begin{array}{ccc}\ \ \ \ x&\ \ \ y&\ \ z\end{array}\\\left[\begin{array}{ccc|c}-10&-9&13&12\\8&-7&-5&15\\5&4&-6&-12\end{array}\right]$

You might be interested in

Fist answer gets brain

Misha Larkins [42]

I believe the answer would be A.

5 0

3 years ago

Read 2 more answers

In Chad's reading class, all the students are reading the same book. The school bought each student a book at $7 per book. If th

Molodets [167]

It would be A. 7(30) - 7(7)

8 0

3 years ago

Read 2 more answers

Henry bought 5/6 pound of roasted almonds for five dollars he wants to know the price per pound

Andrej [43]

Answer:

Step-by-step explanation:

p=pound

5/6p= 500

p= 500(6/5)

p=600 cents

p=$6

Hope this helps!!!

8 0

3 years ago

15n + 24 - 4(n - 3) + 6 - 2n = 105

elena55 [62]

Just trying to win the CONTEST BUT GOOOOD LUCK

7 0

3 years ago

Read 2 more answers

tickets at a particular movie theatre have different rates for adults and children. on a friday the theatre sold 4 adult tickets

maria [59]

Using elimination method. Using substitution will cause some fraction problems.

c- child tickets
a- adult tickets

4a + 7c = $83
5a + 6c = $90

multiply by -5

-20a - 35c = -$415
20a + 24c = $360

-11c= -$55
c = $5 child tickets

4a + 7(5)= $83

4a + 35 = $83

4a = $48

a= $12 adult tickets

4 0

3 years ago