Ask question

Ask question

All categories

Natasha2012 [34]

4 years ago

5

A single one celled organism divides into two identical cells every 30 minutes. If 6 of these organisms are present in a sample

now, how many will be present after 60 minutes(assuming none of them die)?

1 answer:

Nataly [62]4 years ago

6 0

We start with 6 organisms, whose population doubles every 30 minutes.
After 30 minutes we will have 12 and after 60 minutes we will have 24.

You might be interested in

Evan typed 72 pages of notes in one day. He typed 1/2 of the pages in the morning and 1/3 of the pages in the afternoon. He type

patriot [66]

1/2 * 72 = 36
1/3 * 72 = 24

5 0

4 years ago

Help please! I have to answer what is wrong with this ,but I am getting really confused.

Aliun [14]

Answer:

x = 113

Step-by-step explanation:

Vertical angles are congruent. To the left of 113 would be 67 but x is not.

8 0

3 years ago

!!PLEASE HELP ME ANSWER!!

Igoryamba

Answer:

$x = \sqrt{w(w+z)}$

Step-by-step explanation:

By the Pythagorean theorem, triangle BCD has

$y^2 = x^2 - w^2$

and triangle ABD has

$v^2 = y^2 + z^2$ .

Substituting the first equation into the second equation for $y^2$ gives the equation

$v^2 = (x^2 - w^2) + z^2$

Now triangle ABC has

$(w+z)^2 = x^2 + v^2$

Expanding out the left side, $w^2 + 2wz + z^2 = x^2 + v^2$ .

Now substitute the equation from before, $v^2 = x^2 - w^2 + z^2$ , into the new equation.

$w^2 + 2wz + z^2 = x^2 + (x^2 - w^2 + z^2)$

$w^2 + 2wz + z^2 =2x^2 - w^2 + z^2$

We work to isolate $x^2$ by adding $w^2$ to both sides of equation and subtracting $z^2$ from both sides.

$2w^2 + 2wz = 2x^2$

Divide both sides by 2 and you get $w^2 + wz = x^2$

Assume that x is positive and square root both sides to get the final result of

$x = \sqrt{w^2 + wz} = \sqrt{w(w+z)}$

4 0

3 years ago

Contact [7]

Answer:x

Step-by-step explanation:

6 0

3 years ago

HELP!!!!!!!!! I don't understand this question. Does anyone know how to do it?

Semenov [28]

Answer:

y = 8(.88)^x

y = 4.221855 for the fifth reduction

Step-by-step explanation:

We can use the formula

y =ab^x

where a =the initial value

b= 1 -percent decrease

a = 8 inches

b = 1-12%

= 1-.12

= .88

y = 8 (.88)^x

The fifth reduction is

y = 8 (.88) ^5

y = 4.221855

5 0

3 years ago