3 years ago

Please help me and can you write and explanation too please.

Mathematics

2 answers:

nevsk [136]3 years ago

8 0

I thino the awnser is 103.5

k0ka [10]3 years ago

4 0

Answer:

103.5 ....................

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<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bcos%2030%7D%7B1%2Bsin30%7D%3Dtg30" id="TexFormula1" title="\frac{cos 30}{1+sin30}=tg

Kay [80]

$\cos 30=\frac{\sqrt{3}}{2}$

$\sin 30 = \frac{1}{2}$

$\tan 30=\frac{1}{\sqrt{3}}$

Now we insert that into the equation:

$\dfrac{\frac{\sqrt{3}}{2}}{1+\frac{1}{2}} = \frac{1}{\sqrt{3}}$

$\dfrac{\frac{\sqrt{3}}{2}}{\frac{3}{2}} = \frac{1}{\sqrt{3}}$

$\frac{\sqrt{3}}{3} = \frac{1}{\sqrt{3}}$

$\frac{\sqrt{3}}{3} = \frac{1}{\sqrt{3}}\cdot \frac{\sqrt{3}}{\sqrt{3}}\\$

$\frac{\sqrt{3}}{3} = \frac{\sqrt{3}}{\sqrt{3}\cdot \sqrt{3}}\\$

$\frac{\sqrt{3}}{3} = \frac{\sqrt{3}}{3}$

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4 years ago

How to write 15, 340, 078 in expanded form

miss Akunina [59]

10,000,000 + 5,000,000 + 300,000 + 40,000 + 70 + 8

5 0

3 years ago

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Find the volume of a cylinder when the radius is 9 cm and the length is 20 cm

frozen [14]

Calculate the area of the circle= pir^2
= 254,5 cm x height (20)
=45804,42 cm^3

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3 years ago

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Y = -3x - 13<br> 9x - 2y = -4

Eddi Din [679]

Answer

Step-by-step explanation:

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3 years ago

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Omani drives 66 miles in 1.5 hours

Burka [1]

Answer:

25.6 km/h

Step-by-step explanation:

Omani:

First, 1.5 hours = 1 hour and 30 minutes

and 66 miles = 105.6 km (66 x 1.6 = 105.6)

105.6 / 1.5 = 70.4 km/h

Omani's speed is 70.4 km/h

Adedi:

1 hour and 15 minutes is 1.25 hours

she drives 56 km in 1.25 hours

So 56 / 1.25 = 44.8 km/h

Adedi's speed is 44.8 km/h

Difference:

70.4 - 44.8 = 25.6 km/h

Omani is faster than Adedi with 25.6 km/h

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3 years ago

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