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Bess [88]
3 years ago
7

Y=-x^2+4x-5 find the vertex

Mathematics
1 answer:
Burka [1]3 years ago
3 0

Answer:(2,−9)

Step-by-step explanation:

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The chemical formula for sulfuric acid is H2SO4. If the weight of the acid was 1470 grams, how much did the sulfur weigh? (H, 1;
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480.61g S

Step-by-step explanation:

I'm not sure what you meant in the parenthesis though. If you want the answer sig-figged it would be 481 g S. My work is attached, hope it helps!

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3 years ago
Which number in the monomial 125x^18 y^3 z^25 need to be changed to make it a perfect cube
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Read 2 more answers
Solve for the value of X.
Mkey [24]
The answer is 40°
i will tell you how,
Total angle sum of any triangle is 180°
∠A + ∠B  + ∠E = 180°
70° + 80° + ∠E = 180°
solve for ∠E
∠E = 30°
Now solve use ∠BDE,
∠B + ∠D + ∠E = 180°
20° + 90° + 30° + x = 180°           (in triangle DEB, ∠E = 30 + x ) (∠D is 90°)
solve for x
there fore, x = 40° 
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