2 years ago

The half-life of chromium-51 is 28 days. If the sample contained 5.10 grams, how much chromium was present 168 days ago?

Mathematics

1 answer:

stepan [7]2 years ago

3 0

I don’t understand how many grams had the first one,so I can’t help you

You might be interested in

What are the solutions of the equation (x-3)^2 + 2(x-3) -8 = 0

Mariulka [41]

Expand and simplify
(x-3) (x-3) +2(x-3) -8=0
(x-3+2)(x-3)-8=0
(x-1)(x-3)-8=0
x^2 -4x +3-8=0
x^2 - 4x -5=0
x^2 -5x +x-5=0
x(x-5)+x-5=0
(x+1)(x-5)=0
x= - 1, 5

6 0

2 years ago

Read 2 more answers

What does 24 ÷ 7 actually mean? Please help as fast as you can!!! :(

Blizzard [7]

Step-by-step explanation:

are you talking about like 24/7 ? or you mean like divide 24÷7 ?

6 0

2 years ago

Choose 3 values that would make this inequality true 28 + x > 42

tester [92]

Answer:

100, 15, 24 I think that is it

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

What is the slope of the line that passes through the points (–2, 5) and (1, 11)?

Bess [88]

$Slope = \frac{y_2-y_1}{x_2-x_1} = \frac{11-5}{1-(-2)} = \frac{6}{1+2} = \frac{6}{3} = \boxed{\bf{2}}$

The answer is B) 2.

3 0

2 years ago

Read 2 more answers

(x – 4)(x+6)<br> Need help simplify

Ksivusya [100]

The answer would be 2x^2+2x-24

using foil, you would multiply together x & x, x & 6, -4 & x, and -4 & 6, then add them together.

5 0

2 years ago

Read 2 more answers