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3 years ago

The concentration of a drug in a patient's bloodstream t hours after injection is given by C =

Mathematics

1 answer:

Airida [17]3 years ago

8 0

i don't know

brainly ok?????

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3 years ago

Given the data shown below, which of the following is the best approximation of the coefficient of determination (r^2)

HACTEHA [7]

The coefficient of determination can be found using the following formula:

$r^2=\mleft(\frac{n(\sum ^{}_{}xy)-(\sum ^{}_{}x)(\sum ^{}_{}y)}{\sqrt[]{(n\sum ^{}_{}x^2-(\sum ^{}_{}x)^2)(n\sum ^{}_{}y^2-(\sum ^{}_{}y)^2}^{}}\mright)^2$

Using a Statistics calculator or an online tool to work with the data we were given, we get

So the best aproximation of r² is 0.861

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1 year ago

Math problem plz help

Firlakuza [10]

Answer:

5/2 x 1/2

Step-by-step explanation:

when you multiply fractions you multiply trait across meaning you do 5*1 and 2*2 which leaves you with 5/4 and that is equivalent to 1 &1/4

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3 years ago

Help me!!!!!!!!!!!!!!!!!!!!!

marissa [1.9K]

Answer:

$\frac{7}{3} and \: \frac{8}{3}$

Step-by-step explanation:

so let's start with what we know:

$2 \frac{1}{3} \times 2 \frac{2}{3}$

now to get it into non mixxed numbers:

2*3 = 6

6+1

_____

$\frac{7}{3}$

2*3=6

6+2=8

______

$\frac{8}{3}$

now to cross mutiply them:

7*3

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3 years ago