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My name is Ann [436]
3 years ago
9

Use cramers rule to solve each system of equations :

Mathematics
1 answer:
Snowcat [4.5K]3 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.

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Will give brainliest if its correct and more than one person answers
myrzilka [38]
D) a = 24, c = 48, e = 22, i = 80 is the correct answer.

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6 0
3 years ago
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In the diagram below, AC is perpendicular to BD. Find the value of N.
timurjin [86]
Hi there!

In order to find the value of N, we'll need to set the value of the angle containing the variable n equal to 90. This is because in perpendicular lines, all angles are equal to 90.

WORK:
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8 0
3 years ago
How many solutions does the equation -6y+13+9y=8y-3
Lina20 [59]

Answer:

Single Solution of 3.2 (16/5)

Step-by-step explanation:

3x = 8x -16 <--- I combine like terms.

-5x = -16

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BTW Negative times a Negative equals a positive.

3 0
3 years ago
PLEASE ANSWER WITH SOLUTION PLS
katen-ka-za [31]

Answer:

whatever% of anything, is just (whatever/100) * anything.

there were a total of 560000 votes, now, off those some are valid and some are invalid.

we know 15% of that are invalid, that simply means that 85% are valid, since 85% + 15% is the whole thing, or 100%, if 15% are not good, the other 85% are the good ones.

how many are the valid ones anyway?  well, 85% of 560000, which is just (85/100) * 560000.

we know that off those valid ones, the candidate got 75% of those, so how much is 75% of that?

well, (75/100) * [ (85/100) * 560000 ].

Step-by-step explanation:

7 0
3 years ago
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The product of five rational numbers is positive. At most, ____
Triss [41]

Answer:

4

Step-by-step explanation:

two negative numbers multiplied together makes a positive number. so there could not be 1,3, or 5 negative numbers, but there could be 0,2, or 4 negative numbers.

8 0
3 years ago
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