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const2013 [10]
3 years ago
6

Simplify: (4x2 + 8xy + 2y2) − (−9x2 − 4xy − 7y2)

Mathematics
2 answers:
OLga [1]3 years ago
7 0
When simplified 13x2+12xy+9y2 
PSYCHO15rus [73]3 years ago
6 0
You're answer will be C 13x2+12xy+9y2
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A bike ramp has a slope of 1/4. What is the angle the ramps makes with the ground to the nearest degree?
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The slope is equivalent to the rise over run. Since the slope of the bike ramp is ¼, the rise is equivalent to 1 and the run is equivalent to 4. To get the angle of the bike ramp make with the ground, let us use the equation tanθ= rise/run.

Therefore, tanθ= ¼.  

Θ=tan-1 (1/4)

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3 years ago
A theater can seat 170 people. The number of rows is 7 less than the number of seats in each row. How many rows of seats are the
maks197457 [2]
Answer:number of rows =10
number of places in row = 17

Step-by-step explanation:
number of rows =N
number of places in row = N+7
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N2=10
We can`t take negative value for quantity of smth so we throw N1 away
From that number of rows =10
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2 years ago
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3 years ago
True or false?
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Read 2 more answers
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