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Ede4ka [16]
3 years ago
11

when have you calculated the mean in real life? and do you always have to use math in order to find the mean?

Mathematics
1 answer:
MaRussiya [10]3 years ago
4 0

Answer:

a girl was mean so I had to beat her up

Step-by-step explanation:

that is when I had met a mean person

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Record for Boston Marathon's wheelchair division is 1 hour, 18 minutes, and 27 seconds.
aleksley [76]
1 hr 18 minutes and 27 seconds hmmm

there are 60 minutes in 1 hr, thus 18 minutes is 18/60 hrs or 0.3hr.

so 1hr 18min is 1.3 hrs

there are 60 seconds in 1 minute and 60 minutes in 1 hr, thus 60*60 seconds in 1hr, or 3600 seconds, so, 27 seconds is just 27/3600 hrs, or 0.0075 hrs.

so, 1.3 hr or 1.3000 hr for that matter plus 0.0075, is just 1.3075 hrs.

a)

so, they covered 26.2 miles in 1.3075 hrs, so the average speed is just 26.2/1.3075, or about 20.0382409177 miles/hr

b)

\bf \begin{array}{ccll}
miles&hrs\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
26.2&1.3075\\
30&h
\end{array}\implies \cfrac{26.2}{30}=\cfrac{1.3075}{h}\implies h=\cfrac{1.3075\cdot 30}{26.2}

8 0
3 years ago
Help me please,Thanks
harina [27]
24:48 which can be simplified to 1:2
3 0
3 years ago
Read 2 more answers
On Saturday Keisha ran 3.218 kilometers. on Sunday she ran 2.41 kilometers. How much further did she run on Saturday than on Sun
Len [333]
0.808 km, you find the difference between the two numbers
7 0
3 years ago
Read 2 more answers
Problem 5.) Andre paid $13 for 3 books. Diego bought 12 books priced at the same rate. How much did Diego pay for the 12 books?
balandron [24]

Answer:

$52

Step-by-step explanation:

3 books → $13

1 book → $13/3

12 books → $13/3 x 12 = $52

6 0
2 years ago
A student solved 3/x−4=x/7 in six steps, as shown.
Stolb23 [73]

Answer:

Option A.

Step-by-step explanation:

The given equation is

\dfrac{3}{x-4}=\dfrac{x}{7}

Step 1: Multiply both sides by (x-4).

3=\dfrac{x(x-4)}{7}

Step 2: Multiply both sides by 7.

21=x(x-4)

Step 3: Using distributive property.

21=x^2-4x

Step 4: Isolate all terms on one side.

0=x^2-4x-21

Step 5: Find factors by splitting the middle term.

0=x^2-7x+3x-21

0=x(x-7)+3(x-7)

0=(x-7)(x+3)

Step 6: Using zero product property, we get

x=-3, x=7

It means student solved the equation correctly.

Therefore, the correct option is A.

5 0
3 years ago
Read 2 more answers
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