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Irina-Kira [14]
3 years ago
10

How do you know if two lines are parallel without a equation?

Mathematics
1 answer:
sesenic [268]3 years ago
7 0
If they do not have solutions (intersections).
If they do not have intersections then they must be parallel. Imagine it on the graph
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A rectangular flower bed measures 10 m by 6 m. It has a path 2 m wide around it. Find the area of the path.
Leni [432]

Step-by-step explanation:

the easiest way to answer this is to calculate the area of the large rectangle (white) and subtract the area of the small rectangular (black).

we know the dimensions of the small rectangle : 10×6

and because of the 2m thick "frame" we know the dimensions of the large rectangle by adding 2×2 m to every small dimension : 14×10

(2 m on the top and the bottom, and 2 m left and right, so 4 m added in every direction).

the area of the large rectangle is

14 m × 10 m = 140 m²

the area of the small rectangle is

10 m × 6 m = 60 m²

so the area of the path is

140 - 60 = 80 m²

5 0
3 years ago
Which of the following represents the zeros of f(x)=3x^3-10x^2-81x 28? Answer choices: A.) 7, -4,1/3 B.) 7,-4, -1/3 C.) 7,4,1/3
11Alexandr11 [23.1K]
<span>The right function is f(x)=3x^3-10x^2-81x + 28

You can realize that 7 is a root because it is in all the answers.

So you can divide the polynomial by x - 7. If you do it you can find that the quotient is 3x^2 + 11x - 4

Now you can use the quadratic formula to find the other two roots.

If you do it, you will find they are x = 1/3 and x = -4.

So the answer is option A) 7, -4, 1/3

And the polynomial can be written as (x - 7)(x + 4) (x -1/3)
</span>
8 0
3 years ago
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ser-zykov [4K]

Answer: y=-2x+6

Step-by-step explanation:

To write the equation in slope-intercept form, you want to solve for y.

y-6=-2x                 [add both sides by 6]

y=-2x+6

Now, we have the equation in slope-intercept form.

8 0
4 years ago
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Answer:C

Step-by-step explanation:

7 0
3 years ago
Which postulate, if any, make the triangle congruent.??<br><br> Please help
solmaris [256]

Answer:

SAS postulate

Step-by-step explanation:

5 0
3 years ago
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