3 years ago

Please help me! Im confused

Mathematics

1 answer:

Natali [406]3 years ago

3 0

Answer:

x= -5.5

Step-by-step explanation:

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An element with mass 210 grams decays by 8.3% per minute. How much of the element is remaining after 15 minutes, to the nearest

GarryVolchara [31]

Answer:

$57.2\ g$

Step-by-step explanation:

In this problem we have a exponential function of the form

$f(x)=a(b^x)$

where

f(x) is the remaining mass of the element in grams

x is the time in minutes

a is the initial value (y-intercept of the exponential function)

b is the base

r is the rate

$b=(1+r)$

In this problem we have

$a=210\ g$

$r=-8.3\%=-8.3/100=-0.083$ ---> is negative because is a decay's rate

$b=(1-0.083)=0.917$

substitute

The exponential function is equal to

$f(x)=210(0.917^x)$

For x=15 minutes

substitute in the function

$f(x)=210(0.917^15)$

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3 years ago

What is the solution to this system of linear equations? x y = 4 x − y = 6.

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Answer:

Step-by-step explanation:x y = 4 x - y = 6 = get you some b1tc1es

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3 years ago

This year benny is 12 years old and his mom is 48 years old what percent of his mom age is benny

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Hello! Benny is 25%of his Moms age

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3 years ago

charlene has eight more dollars than Megan. Together they have $86.00. Which equiation can be used to determine the amount of mo

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Answer:

Megan has 35.00 dollars.

Step-by-step explanation:

Divide 86.00 by 2 which equals 43.00. Next, minus 8 from the 43.00 and you will get what Megan has. Megan has 35.00 dollars.

I hope this helps!

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$\frac{15}{4}$ ÷ $\frac{3}{4}$ =

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3 years ago

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