Ask question

Ask question

All categories

3 years ago

13

A radioactive substance decays according to the equation y=30( .88 )^x, where y is measured in grams of the radioactive substanc

e and x is years. In how many years will there be about half of the original amount left of this radioactive substance?

1 answer:

Gelneren [198K]3 years ago

7 0

The answer is: 4 idk.

You might be interested in

I need help I have 10 more minutes until this quiz ends plz help

Vladimir [108]

Answer:

The second and the third one

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

The valume of (3-5)4(2)-16+2

rusak2 [61]

Answer:

-30

Step-by-step explanation:

Calculate the difference:

(3-5)x4x2- 16 plus 2

Result: -2x4x2- 16 plus 2

calculate the product...

Result: -16-16 plus 2

Calculate the sum or difference

ANSWER: -30

8 0

3 years ago

The length of a rectangle is 4 meters less then twice its width. the area of the rectangle is 70 meters squared. Find the width

Travka [436]

Answer:

yes es correcto ya que 70 es igual a 4 metros

8 0

3 years ago

The APR of Percy’s savings account is 4.4%, and interest is compounded monthly. If the principal in Percy’s savings account were

lutik1710 [3]

Answer:$11,389.39

Step-by-step explanation:

(Apex)

8 0

2 years ago

Use the substitution method to solve the system of equations. Choose the correct ordered pair. x + y = 11 -x = -y - 9

suter [353]

$x+y=11 \\
-x=-y-9 \\ \\
\hbox{substitute the second equation by -1} \\ \\
x+y=11 \\
x=y+9 \\ \\
\hbox{substitute y+9 for x in the first equation} \\ \\
y+9+y=11 \\
2y=11-9 \\
2y=2 \\
y=\frac{2}{2} \\
y=1 \\ \\
x=y+9 \\
x=1+9 \\
x=10 \\ \\
(x,y)=(10,1)$

The answer is B.

5 0

2 years ago

Read 2 more answers