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Olenka [21]
3 years ago
10

If you were to solve the following systems of equations by using a matrix, which of the following would be your coefficient matr

ix? 5x-y=18 3x+8y=15 (picture as everything in it for better understanding)
A.[5 3,-1 8]
B.[5 -1,3 8]
C.[5 18,3 15]
D.[5 -1 18,3 8 15]

Mathematics
2 answers:
sesenic [268]3 years ago
6 0

the answer on apex is A


DedPeter [7]3 years ago
4 0
C is the only answer




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a computer and printer a totoal cost $1132 the cost of the computer is three times the cost of the ptinter
zavuch27 [327]
Use a system of equations

C+P=1132
3P=C

Substitute C in first equation as
3P+P=1132
Simplify
4P=1132
Solve
P=1132/4
P=283

NOW SOLVE FOR C SUBSTITUTING P VALUE IN FIRST EQUATION

C+283=1132
C=1132-283
C=849


Printer = 283$
Computer = 849$
3 0
2 years ago
The length of a rectangle is 5 m less than twice the width, and the area is 33 m. Find the dimensions of the rectangle.
MrMuchimi
Check the picture below

it can't be -3... since is width unit, so it has to be the other

and recall that length = 2w - 5

7 0
3 years ago
Read 2 more answers
Suppose a is jointly proportional to b and c. if a=4 when b=8 and c = 9, then what is a when b=2 and c=18
asambeis [7]

From the given information, a exists jointly proportional to b and c.

then $$a \propto b c$

Therefore, the value of a exists 2.

<h3>What is the value of a?</h3>

Given, a exists jointly proportional to b and c.

$$a \propto b c$

Taking K as the constant of proportionality.

a = K b c

For b = 8 and c = 9, the value of a = 4

4 = K(8)(9)

4 = 72 K

Dividing the equation by 72, we get

$K=\frac{1}{18}

Using the value of K in the equation:

$a=\frac{b c}{18}

Substitute the values of b = 2 and c = 18, in the above equation

$a=\frac{2 \times 18}{18} \\

a = 2

Therefore, the value of a exists 2.

To learn more the value of x refers to:

brainly.com/question/11874663

#SPJ4

6 0
11 months ago
Alexandra saved up her money and bought a
Mars2501 [29]

Answer: .375

Step-by-step explanation:

Instead of doing 8/3 it would be 3/8 since there are 8 cars being put inside of 3 feet. Therefore, 3/8= .375

7 0
3 years ago
Find two points on the line to be graphed. y-5=0
Nonamiya [84]
Any point with the y of 5 could be the answer
3 0
2 years ago
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