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3 years ago

Can someone please help me ?

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

4 0

The first answer in Question A is Business Plan and the second answer is $3 less.

The first answer in Question B is 12 and the second answer is Residential Plan.

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a six sided die is rolled 15 times with these results (1,1) (2,3) (3,4) (4,4) (5,1) (6,2) what is the experimental probabilitly

GenaCL600 [577]

Answer:

seems to easy to be true but the answer is 7/12 cause it's a fraction and it can't be simplified

5 0

2 years ago

Find the equation of a parallel to y+2=-1/2x that passes through the point (-2,2)

FromTheMoon [43]

Answer:

y = - 1/2x + 1

Step-by-step explanation:

y+2= - 1/2x

Slope = -1/2

Point: (-2,2)

y-Intercept: 2 - (-1/2)(-2) = 2 - 1 = 1

4 0

2 years ago

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:

$\frac{dm}{dt} = -k\cdot m$

b) The general solution is found after separating variables and integrating each sides:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$

Where $\tau$ is the time constant and $k = \frac{1}{\tau}$

c) The time constant is:

$\tau = \frac{1690\,yr}{\ln 2}$

$\tau = 2438.155\,yr$

The particular solution of the differential equation is:

$m(t) = 10\cdot e^{-\frac{t}{2438.155} }$

d) The amount of radium after 300 years is:

$m(300) \approx 8.842\,g$

4 0

3 years ago

Read 2 more answers

Solve by substitution 9x+y=21, -x-3=y

VashaNatasha [74]

Answer:

point form: $(3,-6)$

equation form: $x=3, y=-6$

Step-by-step explanation:

4 0

2 years ago

The legs of a right triangle are 3 units and 2 units. What is the length of the hypotenuse? Round your answer to the nearest hun

marusya05 [52]

Answer:

It will be around 3.61

Step-by-step explanation:

3 0

3 years ago