An element with mass 510 grams decays by 26.3% per minute. How much of the element is remaining after 7 minutes, ?

The element is remaining after 7 minutes = 60.23 grams

Step-by-step explanation:

The equation for mass decay :

, where = initial mass, A = mass after t minutes.

Given:

r = 26.3% = 0.263

t = 7 minutes

Hence, the element is remaining after 7 minutes = 60.23 grams

ok

step-by-step explanation:

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

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