Ask question

Ask question

All categories

2 years ago

5

A radioactive substance decays exponentially. A scientist begins with 150 milligrams of a radioactive substance. After 20 hours,

75 mg of the substance remains. How many milligrams will remain after 27 hours?

1 answer:

adell [148]2 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

M²-2m=0 how do i finish this?

Degger [83]

Answer:

m = 0 or m = 2

Step-by-step explanation:

m² - 2m = 0

m ( m − 2 ) = 0

m = 0

m − 2 = 0

m = 2

8 0

3 years ago

Read 2 more answers

A cube has a side length of 7 cm a cylinder has a radius of 5 cm and a height of 4 cm

densk [106]

Answer:

Cube has larger volume than cylinder.

Step-by-step explanation:

Given:

Side of a cube = 7 cm

Radius of a cylinder (r) = 5 cm

Height of a (h) = 4 cm

Find:

Larger volume = ?

Computation:

Volume of cube = Side³

Volume of cube = 7³

Volume of cube = 343 cm³

$Volume\ of\ cylinder=\pi r^2h\\\\Volume\ of\ cylinder=\frac{22}{7} (5)^2(4)\\\\Volume\ of\ cylinder= 314.28$

Cube has larger volume than cylinder.

5 0

3 years ago

4n-(7-6n)<br><br><br> Helppp plz

belka [17]

4n - (7-6n)
4n -7 +6n (multiply minus to 7-6n)
10n -7 is the answer

4 0

3 years ago

Solve the system <br> 12x+2y=86<br> 6x+2y=56

Ghella [55]

<span>12x+2y=86 -
6x+2y=56
-------------------
6x = 30 => x = 30 : 6 = 5

2y = 56 - 30 => 2y = 26 => y = 13</span>

3 0

3 years ago

50 points, question is below.

Angelina_Jolie [31]

x = -3, y = -2

Substitute the values of x and y to the equation xy = k:

k = (-3)(-2)

k = 6

5 0

3 years ago

Read 2 more answers