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3 years ago

A substance has a half-life of 6 years. If 20 pounds are present initially, how much will remain after 2 years?

Mathematics

1 answer:

Vladimir [108]3 years ago

8 0

Answer:

16.66pound

Step-by-step explanation:

roughly 16.66 pound

if in 6 years it become half which is =10

then 10÷6= 1.67

then 1.67 pound is decayed every year.

in 2 years it decay 1.67×2= 3.34

so , the remaining is 20-3.34=16.66pound

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Slope-intercept form is given by y = mx + b. m represents the slope of the equation, and b represents the y-intercept.

m = 10.322

The slope is 10.322.

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3 years ago

How many ways can you order the digits 2,3,4 and 5. you can only use each number once?

butalik [34]

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3 years ago

a car traveling on the taconic parkway travels 84 miles in two hours . what is cars speed ( a special type of rate ) in miles pe

Alisiya [41]

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3 years ago

Read 2 more answers

1. What is the circumference of the given circle in terms of pi? radius= 14 in.

rusak2 [61]

Answer:

1. B 2. B

Step-by-step explanation:

1. The formula for circumference is C= pi times diameter

Radius is half of diameter, so you'd multiply 14 times 2 which gives you 28. Since it's asking for it in pi, it'll be 28 pi.

2. I think instead of circumference, it's asking for area because if it was asking for circumference the answer would have been 6.6 pi, but that answer isn't there. So if it's asking for area, the formula is A= pi(r²) They gave the diameter instead. Remember, the radius is half of the diameter, so in order to get the radius, you'd divide 6.6 by 2 and get 3.3. Then, multiply 3.3 with the number itself, and you'll get 10.89.

Hope this helps!

5 0

3 years ago

Trent's salary used to be $143,020. After changing the amount of time he works, he has begun earning $78,661. By what percent di

svlad2 [7]

Answer:

The salary decreased by 45%

Step-by-step explanation:

Given,

The previous salary of Trent is $143,020

The current salary of Trent is $78,661

The decrease in salary is ($143,020 - $78,661) = $64,359

When he used to get $143,020, the decrease in salary is = $64,359

When he used to get $1, the decrease in salary is = $64,359/$143,020

When he used to get $100, the decrease in salary is = $(64,359/143,020)*100

= 45%

Therefore, there is a decrease in salary by 45%.

6 0

3 years ago