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klemol [59]
3 years ago
15

this is really simple math, i just forgot how to do this because i haven't done math in so long. help please?

Mathematics
1 answer:
shtirl [24]3 years ago
3 0
X^2 - 2/3x + 1/9   is the answer i belive

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In a scatter plot or diagram, what is it called when all the points lie approximately along a straight line?
solong [7]
The answer to your question is Line Correlation .
3 0
3 years ago
Simplify<br> (x + 3)<br> (x + 3)
8_murik_8 [283]

Answer:

x^2-6x+9

Step-by-step explanation:

(x-3)^2

= x^2-6x+9

3 0
4 years ago
a particular strain of bacteria doubles in population every 10 minutes. Assuming you start with a single bacterium in a petri di
ser-zykov [4K]

Answer:

C. 32,768

Step-by-step explanation:

Step 1

Convert the number of hours to minutes

2.5 hours to minutes = 2 hrs 30 minutes to minutes is calculated as

1 hour = 60 minutes

2 hours 30 minutes =

Cross multiply

(60 minutes × 2 hours) + 30 minutes = 150 minutes.

Step 2

We are told in the question that the bacteria population doubles every 10 minute interval

Find the number of intervals in 150 minutes

= 150 minutes / 10 minutes interval

= 15 intervals

Step 3

The number of bacteria present after 2.5 hours is calculated using the formula of

= Amount of bacterium × 2ⁿ

Where n = number of intervals = 15

Amount of bacterium = single bacterium = 1

Number of bacteria = 1 × 2¹⁵

= 32,768

Therefore, when you start with a single bacterium in a petri dish, the number of bacteria that will there be in 2.5 hours is 32,768

6 0
3 years ago
10. Name the property illustrated in this statement. If a = 6+3 and 6+3 = 9, then a = 9.
DIA [1.3K]

Answer:

I think it would be the addition property of equality

Step-by-step explanation:

6 0
4 years ago
A piece of PVC material weighs 0.063 pounds per cubic inch. What's the weight of a 36-inch piece of PVC pipe with an outside dia
nalin [4]

The weight of a 36-inch piece of PVC pipe is 0.20 pounds

<h3>How to determine the weight of a 36-inch piece of PVC pipe?</h3>

The given parameters about the 36-inch piece of PVC pipe are

Height, h = 36 inches

Outside diameter, D = 0.82 inches

Inside diameter, d= 0.75 inches

The volume of the PVC pipe is then calculated as:

V = πh(D/2)^2 - πh(d/2)^2

Substitute the known parameters in the above equation

V = 3.14 * 36 * (0.82/2)^2 - 3.14 * 36 * (0.75/2)^2

Evaluate the quotients

V = 3.14 * 36 * 0.41^2 - 3.14 * 36 * 0.375^2

Evaluate the exponents

V = 3.14 * 36 * 0.1681 - 3.14 * 36 * 0.140625

Evaluate the products

V = 19.002024 - 15.89625

Evaluate the difference

V = 3.105774 cubic inches

From the question, we have:

Weight =  0.063 pounds per cubic inch

So, the total weight is

Total weight = 3.105774 cubic inches * 0.063 pounds per cubic inch

Evaluate the product

Total weight = 0.195663762 pounds

Approximate

Total weight = 0.20 pounds

Hence, the weight of a 36-inch piece of PVC pipe is 0.20 pounds

Read more about volume at:

brainly.com/question/1972490

#SPJ1

5 0
1 year ago
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