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Bumek [7]
3 years ago
15

4.10 x 10^-2/ (-2.05 x 10^4)=

Mathematics
1 answer:
kaheart [24]3 years ago
5 0

Answer:

-0.000002

Step-by-step explanation:

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Are the ratios 1 : 3 and 3 : 1 equivalent? Why or why not?
Rainbow [258]

Answer: no

Step-by-step explanation:

no. one is the fraction 1 / 3 and the other is the fraction 3 / 1

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3 years ago
. Use the number line to illustrate the difference: -3-(-7)​
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If a snowball melts so that its surface area decreases at a rate of 9 cm2/min, find the rate (in cm/min) at which the diameter d
zhuklara [117]

Answer:

The diameter decreases at a rate of 0.143cm/min when it is of 10 cm.

Step-by-step explanation:

Surface area of an snowball:

An snowball has spherical format. The surface area of an sphere is given by:

S = d^2\pi

In which d is the diameter of the sphere.

In this question:

We need to differentiate S implicitly in function of time. So

\frac{dS}{dt} = 2d\pi\frac{dd}{dt}

Surface area decreases at a rate of 9 cm2/min

This means that \frac{dS}{dt} = -9

At which the diameter decreases when the diameter is 10 cm?

This is \frac{dd}{dt} when d = 10. So

\frac{dS}{dt} = 2d\pi\frac{dd}{dt}

-9 = 2(10)\pi\frac{dd}{dt}

\frac{dd}{dt} = -\frac{9}{20\pi}

\frac{dd}{dt} = -0.143

Area in cm², so diameter in cm.

The diameter decreases at a rate of 0.143cm/min when it is of 10 cm.

8 0
3 years ago
What is the domain of the following exponential function f(x)=(4/5)^x
Norma-Jean [14]

Hello from MrBillDoesMath!

Answer:  The domain is the set of real numbers.

the full real number system

Discussion:

f(x) = (4/5)^x is defined for all x as the underlying function  (4/5)^x is defined for all x. Therefore the domain is the set of real numbers.

Thank you,

MrB


6 0
3 years ago
Please help me I will give Brainiest to who can answer first. :)
777dan777 [17]

If 40% of the cameras are digital, that means 60% of them are not digital.

If 60% of all cameras is 24, then 20% is 8, making 40% 16 cameras.

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3 years ago
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