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PolarNik [594]
3 years ago
6

A culture started with 2000 bacteria after 3 hours it grew to 2,400 bacteria. Predict how many bacteria will be present after 18

hours. Round your answers to the nearest whole number.
Answer:5,972
Mathematics
2 answers:
Lemur [1.5K]3 years ago
8 0
5,972
is your answer that it
mina [271]3 years ago
8 0
If you do the math:

2000 starting bacteria and after three hours it became 2400,
then do 2400 * 18
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NNADVOKAT [17]
17.5 hours per month

3 0
4 years ago
Read 2 more answers
How can I solve this equation 5x^2-2x-6=-2x^2+9x
wel
Add 2x^2 to both sides
7x^2-2x-6=9x

Subtract 9x from both sides
7x^2-11x-6=0

Factor by using slip and slide
x^2-11x-42
(x-14)(x+3)
(x-14/7)(x+3/7)
(x-2)(7x+3)

Then use the Zero Product Property to find roots
x-2=0
x=2

7x+3=0
7x=-3
x=-3/7

Final answer: x=-3/7, x=2
3 0
3 years ago
Find the standard deviation if the mean of a sample is 72, a z-score of 3 Raw Score: 42 Raw Score: 81
Fynjy0 [20]

Answer:

a) when x = Raw Score: 42

Standard deviation = σ = -10.3

b) Raw Score: 81

Standard deviation = σ = 2.67

Step-by-step explanation:

Find the standard deviation if the mean of a sample is 72, a z-score of 3

Z score formula is given :

z = (x-μ)/σ,

where

x is the raw score

μ is the population mean = 73

σ is the population standard deviation

z = 3

a) when x = Raw Score: 42

z = (x-μ)/σ

3 = 42 - 73/σ

Cross Multiply

3σ = 42 - 73

3σ = -31

σ = -31/3

σ = -10.3

b) Raw Score: 81

z = (x-μ)/σ

3 = 81 - 73/σ

Cross Multiply

3σ = 81 - 73

3σ = 8

σ = 8/3

σ = 2.67

6 0
3 years ago
How many significant figures does 2016m has<br>????????????????????????????????????????????????​
KatRina [158]

4 significant figures.

Step-by-step explanation:

<h2>:)</h2>
6 0
3 years ago
I need assistance with this math problem.
Harman [31]
The answer is 80sq.ft... to figure this out, you just multiply both sides together
8 0
3 years ago
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