Answer:
n = -11xy, so the answer is G.
Step-by-step explanation:
3x^2−n−4y^2=(3x−y)(x+4y)
Step 1: Add -3x^2 to both sides.
3x^2−4y^2−n+−3x^2=3x^2+11xy−4y^2+−3x^2
−4y^2−n=11xy−4y^2
Step 2: Add 4y^2 to both sides.
−4y^2−n+4y^2=11xy−4y^2+4y^2
−n=11xy
Step 3: Divide both sides by -1.
n=−11xy
The answer can be written as 0.3 or as 3/10
Answer:
y=-3
Step-by-step explanation:
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Answer:
11,12
Step-by-step explanation:
when calculated, the square root is 11.7473401245, which is between the two integers, 11 and 12!
Hope this helps!
Answer for the first box: 38
Answer for the second box: -3
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Explanations:
To get the first answer, you plug in x = 0 to reflect were at the surface (height is 0)
38-3x = y
y = -3x+38
y = -3*0+38
y = 38
So the temperature at the surface is 38 degrees Celsius
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Each time x increases by 1 km, y decreases by 3 degrees C. How do we know? Because of the slope m = -3
Note how y = -3x+38 is in the form y = mx+b
m = -3 = -3/1 is the slope
slope = rise/run = -3/1
the "rise" being negative is really a fall or decrease. As we rise higher, the temperature goes down which is expected (It's colder higher up in the atmosphere)