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3 years ago

Plz help me and plz show work

Mathematics

2 answers:

KIM [24]3 years ago

7 0

Answer:

x= -19

Step-by-step explanation:

5x-10 = 7x +28

2x=-38

-38÷2

×= -19

guajiro [1.7K]3 years ago

6 0

X equals -19. hope this helps :))

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Answer:

Step-by-step explanation:

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2 years ago

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The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given

slavikrds [6]

Answer:

a) $\frac{dm}{dt} = -k\cdot m$ , b) $m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ , c) $m(t) = 10\cdot e^{-\frac{t}{2438.155} }$ , d) $m(300) \approx 8.842\,g$

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

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3 years ago

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andrew11 [14]

Answer:

y = 5f(x)

Please see the picture below

Step-by-step explanation:

Given the function f(x) = |x|, to transform the function y=f(x) with a vertical scaling with scale factor of 5, you should multiply the function by 5 to obtain the result;

y = 5f(x)

Please see the picture below to see a graphic solution.

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2 years ago