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VARVARA [1.3K]
3 years ago
12

Can some one please help me with some math questions

Mathematics
2 answers:
strojnjashka [21]3 years ago
7 0
Which questions do you need help with ?!?!?!?!?!
Sever21 [200]3 years ago
5 0
Which questions do you need help with ?
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Given the following system of equations: 2x + 6y = 12 4x + 3y = 15 Which action creates an equivalent system that will eliminate
ozzi

Answer:

Multiply the second equation by −2 to get −8x − 6y = −30.

Step-by-step explanation:

{2x + 6y = 12

{4x + 3y = 15

{2x + 6y = 12

{−8x − 6y = −30 >> New Equation

* Doing this will give you <em>additive</em><em> </em><em>inverses</em><em> </em>of −6y and 6y, which result in 0, so they are both ELIMINATED.

** [3, 1] is your solution.

I am joyous to assist you anytime.

6 0
3 years ago
Read 2 more answers
Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?
oksano4ka [1.4K]

Answer:  The answer is (B).


Step-by-step explanation:  We are given four options and we are to select which matrix can be multiplied to the left of a vector matrix to get a new vector matrix. The order of a vector matrix is either n × 1  or  1 × n.

For (A): The order of the matrix is 2 × 1. If we multiply this matrix by a vector matrix of order 1 × 2, then the resulting matrix will be of order 2 × 2, which is not a vector matrix.

For (B): The order of the matrix is 3  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 3 × 1, which is a new vector matrix.

For (C): The order of the matrix is 2  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 2 × 1, which is a vector matrix of order same as before.

For (D): The order of the matrix is 1  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 1 × 1, which is a not vector matrix.

Thus, the correct option is (B).

5 0
3 years ago
Read 2 more answers
Which is the equation in slope intercept form for the line that passes through (-3,3) and is parallel to 3x + y= 7?
Helga [31]

Answer: B

See how I get

3 0
3 years ago
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In which step does a mistake first occur? please help!
Leya [2.2K]

Answer:

step 1

Step-by-step explanation:

8÷2+(3x3-2)

8÷2+(9-2)

8÷2+(7)

4+7

=11

3 0
2 years ago
Read 2 more answers
Tom made the box plots to compare the number of calories between his morning snacks and his afternoon snacks.
serg [7]

Answer:

cc ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Step-by-step explanation:

3 0
2 years ago
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