You will get Brainly if if you answer correctly and provide step-by-step explanation pls help me I need help with five

Mathematics

1 answer:

lord [1]2 years ago

7 0

Answer:

$2x^2+xy-3y^2$

Step-by-step explanation:

Start by taking everything out of the parentheses:

$3x^2-2xy-2y^2-x^2-(-3xy)-(y^2)$

Note two negatives make a positive:

$3x^2-2xy-2y^2-x^2+3xy-y^2$

Combine like terms:

$3x^2-x^2-2xy+3xy-2y^2-y^2$

Simplify

$2x^2+xy-3y^2$

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Joel walked 2/5 of a mile to the store, 3/10 of a mile to the library, and 1/20 of a mile to the post office. Let x = the total

nadezda [96]

3/4 a mile is the answer

4 0

2 years ago

Please help? It's worth 16 points!!!!

ddd [48]

Answer:

I’m not too sure what your question is exactly but if your just trying to graph the two equations I can help u with that (:

Step-by-step explanation:

The first thing you should do is change the second equation to slope intercept form. It is much easier for most people. From there write out your table by choosing a number for x then plugging that number into the equation to find y. For the first equation (y=1/3x+2) it’s always easier to use multiple of three for the number of x. For example, if 3 was my number for x I would multiply 1/3 by 3=1 then simply add 2=3. So the coordinates for one point on that table would be 3,3. You continue to do that for each graph then plot your points. (In my graph, purple is the equation y+9=-9/3x-9 and black equals the equation y=1/3x+2