4 years ago

Write the following equations in slope intercept form

Mathematics

1 answer:

Rus_ich [418]4 years ago

7 0

Answer:

problem 1 2x+5y= 0

×=-1/2-5/2y

problem 2 y=1 3/7y y=-1.428571

7y=-10

problem 3 x=-7

problem 4 x-y=20

x=-20

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The function A = A 0 e -0.0077x models the amount in pounds of a particular radioactive material stored in a concrete vault, whe

AysviL [449]

Answer:

After 80 years 432 pounds of radioactive element will be remaining.

Step-by-step explanation:

A function $A_{t}=A_{0}e^{-0.0077x}$ models the amount of a radioactive material.

Here x = number of years taken for decay.

If $A_{t}=432$ pound and $A_{0}=800$ pound, then we have to calculate the time for decay.

$A_{t}=A_{0}e^{-0.0077x}$

$432=800e^{-0.0077x}$

$e^{-0.0077x}=\frac{432}{800}$

Take log on both the sides of the equation

$ln(e^{-0.0077x})=ln(\frac{432}{800} )$

-0.0077x = ln(0.54)

-0.0077x = -0.616186

x = $\frac{0.616186}{0.0077}$

x = 80.02 years

Therefore, After 80 years 432 pounds of radioactive element will be remaining.

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3 years ago

What are the coordinates of the point labeled A in the graph shown above?

Nady [450]

Answer:

it is B (2,-2)

Step-by-step explanation:

if its to the right and up from the origin then it is opposite. if it it down or left then it is negative.

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3 years ago

If the dimensions of an equilateral triangle are trebled, how is the area affected?

Daniel [21]

Dimension of an equilateral

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3 years ago

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Pie

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Step-by-step explanation:

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Answer:

well i know 3 is the lowest but i don't know how high it goes.

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Step-by-step explanation:

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