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kipiarov [429]
3 years ago
11

Does any one know thank you

Mathematics
1 answer:
____ [38]3 years ago
4 0

Answer:

B

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
If cosA=3√2/5,then show that cos2A=11/25
Kobotan [32]

Answer:

Step-by-step explanation:

Cos 2A = 2Cos² A - 1

             = 2*(\frac{3\sqrt{2}}{5})^{2}-1\\\\=2*(\frac{3^{2}*(\sqrt{2})^{2}}{5^{2}})-1\\\\=2*\frac{9*2}{25} - 1\\\\=\frac{36}{25}-1\\\\=\frac{36}{25}-\frac{25}{25}\\\\=\frac{11}{25}

4 0
3 years ago
A truck driver has to make a delivery at a location that is 230.2 miles away. She drives an average of 55 miles each hour for 3.
Vlad [161]

Answer:

The driver will make it to the location in the next hour

Step-by-step explanation:

First, find how many miles they traveled in 3.25 hours, by multiplying 55 by 3.25:

55(3.25)

= 178.75

Then, add 55 to this to see if the driver will make it in the next hour:

178.75 + 55

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Since this is greater than 230.2, this means they will make it to the location.

So, the driver will make it to the location in the next hour.

5 0
3 years ago
Read 2 more answers
Simplify. (-2/3) - (3/5)
yKpoI14uk [10]
Okay so here you go 

<span>Decimal Form: -1.266667
</span>
Fraction form: -19/15

hears how: 
Simplify brackets
-2/3 - 3/5

Simplify: -19/15


5 0
3 years ago
Read 2 more answers
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