3 years ago

HELP FIRST GETS BRAINLY

Mathematics

1 answer:

TiliK225 [7]3 years ago

4 0

Answer:

3/21 most simplest form is 1/7

Step-by-step explanation:

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What is the MEAN of this data set? (3, 6, 3)

dlinn [17]

Answer:

mean=sum of data/no of data

=12/3

Step-by-step explanation:

therefore mean=4

4 0

3 years ago

Read 2 more answers

4(20 divided by 12) divided by (4-3)

klasskru [66]

This =2.4 I hope that this helps you

3 0

3 years ago

NemiM [27]

Answer:

i belive the answer is B

Step-by-step explanation:

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3 years ago

A 90-foot rope from the top of a tree house to the ground forms a 45° angle of elevation from the ground. How high is the top of

-Dominant- [34]

Answer:

63.6 feet

Step-by-step explanation:

$sin (45)=\frac{x}{90}$
$x=90 sin (45)$
$x=45\sqrt{2}$
x = 63.6 feet

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2 years ago

The pH scale for acidity is defined by pH= -log subscript 10 [H superscript+] where [H superscript+] is the concentration of hyd

gtnhenbr [62]

Answer:

The concentration of hydrogen ions in moles per liter (M) is $3.981 * 10^{-9}$

Step-by-step explanation:

As we know

The hydrogen ion concentration of any solution at pH is given by

$H^+ = 10^{-pH}$

Substituting the given values in above equation, we get -

$H^+ = 10^{-8.4}\\H^+ = 3.981 * 10^{-9}$ mol/l

The concentration of hydrogen ions in moles per liter (M) is $3.981 * 10^{-9}$

8 0

3 years ago