MATHEMATICS MIDDLE SCHOOL

Use cramers rule to solve each system of equations : 6x = 2 - y
3x + 1 = 2y , please explain thank you :)

Answers

Answer 1
Answer:

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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6 sisters share 4 sandwiches equally what's the fraction

Answers

If you would like to know how many sandwiches will each sister get, you can calculate this using the following steps:

6 sisters ... 4 sandwiches
1 girl ... x sandwiches = ?

6 * x = 4 * 1
6 * x = 4      /6
x = 4/6
x = 2/3

The correct result would be 2/3 of a sandwich.
the answer is 2/3 hope i helped

Chelsea has 11 times as many art brushes as Monique. If they have 60 art brushes altogether, how many brushes does Chelsea have?

Answers

Let Monique's number of art brushes be m.
Then, since Chelsea has 11 times as many art brushes as Monique, Chelsea has 11m brushes.

Together they have 60 art brushes, so we write the equation:

                                              m+11m=60.

This means that 12m=60, dividing both sides of the equation by 12 we get m=5.

Chelsea has 11m=11*5=55 brushes.

Answer: 55

find the area of a triangle with a base length of 4 units and a height of 5 units A. 8 units B. 9 units C. 10 units D. 20 units

Answers

Area = Base x 1/2height
 Answer is C) 10

Answer:

C. 10 square units got it right.

Step-by-step explanation:

hope it helps :D

What is the common prime factors of 2and3

Answers

Answer:

1

Step-by-step explanation:

prime factors of 2 are 1, 2

of 3 are 1,3

what's common between both is 1, so that's the answer
The answer is 1. Because that is how math works.

What does endpoint mean

Answers

Where you stop/finish. hope that helps :)
A end point is at the end of a line a ray a point and a line segment

What is the integer of 3 miles below sea level

Answers

-3 since it's below sea level
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