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3 years ago

Solve for x 1/2+4/2x=x+4/10

Mathematics

2 answers:

mixer [17]3 years ago

8 0

Answer: \frac{1}{2} + \frac{4}{2} x =x + \frac{4}{10}

\frac{1}{2} +2x=x+ \frac{2}{5}

subtract x from each side

\frac{1}{2} + x= \frac{2}{5}

now subtract \frac{1}{2} from each side

x= -0.1

Step-by-step explanation:

Ksivusya [100]3 years ago

7 0

$\frac{1}{2}$ + $\frac{4}{2}$ x =x + $\frac{4}{10}$
$\frac{1}{2}$ +2x=x+ $\frac{2}{5}$
subtract x from each side
$\frac{1}{2}$ + x= $\frac{2}{5}$
now subtract $\frac{1}{2}$ from each side
x= -0.1

Hope I could help

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2 years ago

The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

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Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

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Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

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$V=\pi\ r^2h$

Finding derivative of the Volume with respect to time.

$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

$\frac{dV}{dt}=252\pi$

Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

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2 years ago

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irakobra [83]

Answer:

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Step-by-step explanation:

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2 years ago

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