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3 years ago

J(-9, -2), K(-5, 1), L(1, -4), M(-3, -7) is this is parallelogram?

Mathematics

1 answer:

zepelin [54]3 years ago

7 0

Answer:

Yea, I'm pretty sure it is

Step-by-step explanation:

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On the trip from Detroit to Columbus, Ohio, Mrs. Smith drove an average speed of 60 mph. Returning, her average speed was 55 mph

Anna11 [10]

Remember that Distance = (Average speed)(Time)
Let x be the distance between Detroit and Columbus.
We know the journey from Detroit to Columbus took a time t, and the returning trip took a time t+ $\frac{1}{3}$ . We also know the Average speed of both journeys, so now we can set our equations:
$\left \{ {{x=60t} \atop {x=55(t+ \frac{1}{3}) }} \right.$
Now, we can replace equation 1 into equation 2 to find t:
$60t=55(t+ \frac{1}{3} )$
$60t=55t+ \frac{55}{3}$
$5t= \frac{55}{3}$
$t= \frac{11}{3}$

Now that we know t, we can replace it into our equation 1 to get the distance:
$x=(60)( \frac{11}{3} )$
$x=220$

We can conclude that the distance between Detroit and Columbus is 220 miles.

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3 years ago

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Describe what is the most difficult part of solving equations, for you personally.

Zigmanuir [339]

What do you personaly feel like is most dificult.

For me its rembering minus signs

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3 years ago

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Complete the coordinate proof of the theorem. Given: A B C D is a square. Prove: The diagonals of A B C D are perpendicular. Art

Alex787 [66]

Since the square is on a quadrant plane and it is a square, the fact that the lines cross in the center and start and stop in the corners allows you to tell that they are perpendicular.

So answer one is (B, D) 2 is (0, C) 3 is: 1

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3 years ago

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35 POINTS!!! PLEASE HELP !!!!!!!!!!!!!!

lyudmila [28]

Answer:

The function is increasing from x = 0 to x = 1.

Step-by-step explanation:

A function is increasing when the y-value increases as the x-value increases.

A function is decreasing when the y-value decreases as the x-value increases.

From x = -2 to x = -1 the function is decreasing as the y-value decreases as the x-value increases:

x-value -2 to -1 → increase
y-value 2 to 0 → decrease

From x = -1 to x = 0 the function is increasing as the y-value increases as the x-value increase:

x-value -1 to 0 → increase
y-value 0 to 2 → increase

From x = 0 to x = 1 the function is increasing as the y-value increases as the x-value increase:

x-value 0 to 1 → increase
y-value 2 to 8 → increase

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2 years ago

A medical device is sterilized by gamma radiation at 2.5 megarads (Mrad). Express the equivalent quantity in rads.

marta [7]

Answer:

2 500 000 rad.

Step-by-step explanation:

Mega is the metric prefix for $10^{6}$ , therefore you just need to multiply by 1 000 000 to find the value in rads.

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3 years ago