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Brums [2.3K]
3 years ago
15

How do you do coordinates to prove that lines are perpendicular​

Mathematics
1 answer:
marshall27 [118]3 years ago
5 0

Answer:

Step-by-step explanation:

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If w = -2 and v = -8, which of the following expressions shows the values correctly substituted in for the variables in the expr
Ahat [919]

Answer:

<em>(-2)2 - (-8) + 1</em>

Step-by-step explanation:

When you substitute values into an algebraic equation, you need to input the values exactly how they are given. "w" must go where there are "w"s, and "v" must go where the "v"s are, otherwise you will get an incorrect answer. All values must also carry over their signs--they are one unit--and must be inserted as such, which is why - (-8) is correct, but not - (8) or - 8. (This is because those two negatives will cancel each other out and become +8 when solving). The parenthesis around the values are important because they protect the original values of the variables, which is why (-2)2 is correct. In the case of (-2)2, it also signifies that they are "attached" by multiplication, and when solving would become -4. Without signifying that the variables are separate from the rest of the equation via the parenthesis, it becomes very easy to solve it incorrectly.

5 0
3 years ago
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A hose filling a pool discharges water at a rate of 4L per minute. How long in hours does it take to fill a pool with a 300L cap
zimovet [89]

Answer:

no se de que hablas

Step-by-step explanation:

hablas español o no

7 0
3 years ago
Can some one help me with this
Studentka2010 [4]
The answer is 2 i hope this helps
7 0
3 years ago
When evaluating the expression 3 x (3 + 12/3) - 4, Ryan began with 3 + 12. What was Ryan's mistake?
KIM [24]

Answer:

He has to divide 12/3 first

Step-by-step explanation:

it’s like pemdas you have to do that first then you go on to added the 3+ whatever 12/3 is

3 0
3 years ago
Read 2 more answers
How do I show my work on this problem ? I know the answer is -8,-10 because multiple people told me but I need to show my work
Simora [160]

Step-by-step explanation:

try adding them together that'll make sense duh lol

8 0
3 years ago
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