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mihalych1998 [28]
3 years ago
15

Dr. Drazzle collected 70 L of ocean water to test for antibacterial properties he split the water into 100 samples how much wate

r is in each sample
Mathematics
2 answers:
Mazyrski [523]3 years ago
6 0
70 liters ÷ 100 samples= 0.7 or 7/10 liter per sample

Hope this helps! :)
tatiyna3 years ago
3 0

Answer:

Each sample has a volume of 0.70 L.

Step-by-step explanation:

Let

  • v = volume of ocean water = 70 litres
  • s = number of samples = 100 samples

To find the volume of ocean water in each sample we have to perform the following division.

v/s = 70 L/100 sample = 0.70 L/sample

Each sample has a volume of 0.70 L.

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Find the first 4 terms in each sequence​
koban [17]

Answer:

a₁ = -21  (Given)

a₂ = -28

a₃ = -35

a₄ = -42

Step-by-step explanation:

First term a₁ = -21  (Given)

…………………………………

Second term a₂ :

a₂ = a_{2-1} - 7\\a_{1} - 7\\a_{1} = -21\\-21 - 7 = -28

…………………………………

Third term a₃ :

a₃ = a_{3-1} - 7\\a_{2} - 7\\a_{2} = -28\\-28 - 7 = -35

…………………………………

Fourth term a₄ :

a₄ = a_{4-1} - 7\\a_{3} - 7\\a_{3} = -35\\-35 - 7 = -42

5 0
2 years ago
Find the sum of the first 10<br> terms.<br> 40,37,34,31,...
MArishka [77]

Answer:

It seems each number is 3 less than the previous number.

We must sum these 10 numbers

40, 37, 34, 31, 28, 25, 22, 19, 16, 13

The sum would equal the average of the middle 2 numbers times 10.

(28 + 25) / 2 = 53 / 2 = 26.5

We multiply by 10 because there are 10 numbers and this equals

265

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Mars is extremely far from the Earth. Scientists estimate that it could take astronauts 245​​​​​​​ days to travel from Earth to
Ksivusya [100]

Answer:

Step-by-step explanation:

We would liken the given scenario to distance speed and time relationship. The formula for determining average speed is

Total Distance/ total time

Since the distance between Earth and Mars is 108 million miles(108 × 10^6) the trip takes 245 days, then on average, the number of miles that the astronauts would travel each day would be

108 × 10^6/245 = 440816 miles per day

Writing in powers of 10, it becomes 4.4 × 10^5 miles per day

Rounding to the nearest whole number, it becomes 4 × 10^5 miles per day

3 0
3 years ago
A magazine provided results from a poll of 1500 adults who were asked to identify their favorite pie. among the 1500 ​respondent
valentinak56 [21]

Answer:

0.01  is alpha level

Step-by-step explanation:

Given that a survey of a magazine of 1500 adults revealed that 12% chose chocolate pie.

i.e. p = proportion of people who like chocolate pie = 0.12

Margin of error = ±0.03

The value of   q  =1-\hat p , =1-0.12 = 0.88


The sample size n  is given as 1500. Therefore,  n=1500

The confidence level is given as 99%

Hence alpha = 1- confidence level


=1-0.99=0.01

Hence answer is 0.01



4 0
2 years ago
Read 2 more answers
What is the GCF of 2x4 and 4x2<br> a) 2x^2. B) 2x^4. C) 4x^2
Zinaida [17]

Answer:

a)\ \ \ 2x^2

Step-by-step explanation:

-Greatest common factor is defined as the greatest positive that divides a set of whole numbers evenly and without a remainder.

-Given the set 2x^4\ \ and \ \ 4x^2

we notice, that the GCF can't be an integer with the power of x greater than 2:

=>\frac{2x^4}{2x^2}=x^2\\\\=>\frac{4x^2}{2x^2}=2\\\\GCF= 2x^2

Since, there's no other positive integer than can evenly divide the set of quotients, the GCF is 2x^2

8 0
3 years ago
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