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kotykmax [81]
3 years ago
9

Elimination 4x+5y=-15 -3x-2y=13

Mathematics
1 answer:
AveGali [126]3 years ago
4 0
Multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5
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Saint Petersburg, Russia and Anchorage, Alaska, both have approximately the same latitude of 60 degrees. That means you can reac
user100 [1]

Answer:

Distance from Anchorage (longitude 150 degrees W) to Saint Petersburg (longitude 30 degrees E) = 10,002.47 KM

Step-by-step explanation:

As earth is a sphere of radius 6371 km.

Therefore at 60 degree latitude, the radius of circle can be calculated as shown below:

= 6371 * Cos 60

= 3185.5 KM

Saint Petersburg is nearly 180 degree about Anchorage by flying directly east.

So Distance from Anchorage (longitude 150 degrees W) to Saint Petersburg (longitude 30 degrees E) can be calculated as shown below:

= (180 * 2 * 3.1416 * 3185.5) / 360

= 10,002.47 KM

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3 years ago
A patient is to receive 2.6 grams of medication. The medication is available in capsules of 325 milligrams. How many capsules sh
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2.6 gr = 2,600 mgr
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Answer is 8 capsules
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3 years ago
Is ABCD a parallelogram? Explain how you know.
Sedaia [141]
They are both parallelograms because the sides are parallel to one another
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3 years ago
Mrs. Robbins has stickers and erasers in her desk. The ratio of stickers to erasers is 3 to 8. She has 12 stickers. *
Nuetrik [128]
Given:
ratio of stickers to erasers: 3 to 8
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Mrs. Robbins has 32 erasers.

4 0
3 years ago
Read 2 more answers
PLEASE ROUND THE ANSWER THANKS FOR YOUR HELP
Mama L [17]
Okay!

1) Round both numbers -
2674 - 2700
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2) Subtract 2700 and 1800
2700 - 1800 = 900

Therefore, the answer is 900
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3 years ago
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