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Over [174]
2 years ago
14

7) Which statement about perpendicular lines is true?

Mathematics
2 answers:
OLEGan [10]2 years ago
6 0
A. Perpendicular lines form 90 degree angles
agasfer [191]2 years ago
3 0

Answer:

is the a. Perpendicular lines form 90° angles.

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There is an animal farm where chickens and cows live. All together, there are 84 heads and 210 legs. How many chickens and cows
Ira Lisetskai [31]

1 Chicken have = 2 legs

1 Cow have = 4 legs

No of cows = x

No of chickens = y

Total no of legs = 4x + 2y = 210.............(1)

Total No of heads = x + y = 84................(2)

x = 84 - y....( from (2) )

Substituting the above equation in (1)

4 ( 84 - y) + 2y = 210

336 - 4y + 2y = 210

336 - 2y = 210

-2y = -126

= y = 63

No of cows = 84-63 = 21

∴ <u><em>Total no of cows = 21</em></u>

<u><em>Total no of chickens = 63</em></u>

5 0
3 years ago
I don’t feel like typing it out but can you guys help me on this one
lara31 [8.8K]

the answer is 4%

Hope this helps!

3 0
3 years ago
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Radius: 3.5 units, Center (0,3.5)
vlabodo [156]

Step-by-step explanation:

General equation of circle:

(x - a)² + (y - b)² = r².

Therefore we have x² + (y - 3.5)² = 12.25.

5 0
2 years ago
PLEASE CAN ANYONE HWLP WITH THIS QUESTION I NEED HELP ASAP!!!!!!
matrenka [14]

Answer: C.) $51

Step-by-step explanation:

$85.00 x 40%

85.00 x 0.40= 34

85.00-34=51.00

$51

3 0
3 years ago
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Please answer quickly! will give brainliest!
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Answer:

12 cows and 5 chickens

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3 years ago
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