I don't really understand, if someone could help that would be great

Mathematics

2 answers:

stellarik [79]3 years ago

8 0

When combining like terms, always go from left to right.

7x-8x = -1x
9y-4y-5y=0
answer is -1x

Nastasia [14]3 years ago

6 0

Simplifying 7x+9y+-8x+-4y+-5y=0

reorder the terms 7x+-8x+9y+-4y+-5y=0

combine like terms 7x+-8x=-1x-1x+9y+-4y+-5y=0

combine like terms 9y+-4y=5y-1x+5y+-5y=0

combine like terms 5y+-5y=0
-1x+0=0
-1x=0

solving
-1x=0

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If A is a 5 by 7 matrix, what is the maximum rank that A can have?

amm1812

Answer:

Step-by-step explanation:

Remember, the rank of a matrix is the number of pivots or number of rows different of zero in the echelon form of the matrix.

Then, if A is a matrix $5\times 7$ the maximum number of pivots that can have is one by row, that is, 5.

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3 0

3 years ago

A rectangular site measures 125 feet (frontage) by 256 feet (depth), of which 26 feet is in the public right of way. what is the

alexandr1967 [171]

Answer:

32,000 square feet gross area and 28,750 square feet net area

Step-by-step explanation:

Given a rectangular site measures 125 feet (frontage) by 256 feet (depth), of which 26 feet is in the public right of way. We have to find the the gross and net site area.

As, 26 feet width is in the public right of way which excluded in the net area but included in gross area.

For gross area,

Length=125 feet

Width=256 feet

$Area=Length\times width=125\times 256=32000 square feet$