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8_murik_8 [283]

2 years ago

10

If -nx2 + tx + c = 0, what is x equal to?

1 answer:

Helen [10]2 years ago

5 0

$f(x)=-nx^2+tx+c=0\\\\
\Delta=t^2-4\cdot(-n)\cdot c=t^2+4cn\\\\
1.\\
 \Delta0\\
\sqrt{\Delta}=\sqrt{t^2+4cn}\\
x_1=\frac{-t-\sqrt{t^2+4cn}}{2\cdot(-n)}=\frac{t+\sqrt{t^2+4cn}}{2n}\\
x_2=\frac{-t+\sqrt{t^2+4cn}}{2\cdot(-n)}=\frac{t-\sqrt{t^2+4cn}}{2n}\\$

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A manager checked production records and found that a worker produced 200 units while working 40 hours. In the previous week, th

jeka94

Answer:

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b. Increase

Step-by-step explanation:

a. Current period productivity is 200 / 40 = 5 units/hour

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2 years ago

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satela [25.4K]

Answer:

$\frac{1\cdot \left(4+\sqrt{3}\right)}{\left(4-\sqrt{3}\right)\left(4+\sqrt{3}\right)}\\$

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4 0

1 year ago

Read 2 more answers

Water is leaking out of an inverted conical tank at a rate of 6800.0 cubic centimeters per min at the same time that water is be

m_a_m_a [10]

Answer:

6.82 $mt^3/min$

Step-by-step explanation:

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(See picture attached)

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$V=\frac{\pi R^2h}{3}$

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One minute later, the height of the water is 1 meter + 30 centimeters = 1.30 mt

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r = 0.5416 mt

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<em>0.12 = Speed of water being pumped -6.8 </em>

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2 years ago

Which system has no solution.

elena55 [62]

There is no picture with this so I don’t know how to answer this

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2 years ago

PLEASE HELP!! what is the surface area of a cylinder with a radius of 7 and a height of 32? Note: Answer must not be fraction or

Anton [14]

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8 0

3 years ago