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3 years ago

Can you please answer my question number 7

Mathematics

2 answers:

NikAS [45]3 years ago

8 0

The answer to this is: x=25

emmainna [20.7K]3 years ago

3 0

1/2 = x / 50
cross multiply because this is a proportion
(2)(x) = (1)(50)
2x = 50
x = 50/2
x = 25 <==

and if u will notice, 1/2 and 25/50 are equivalent fractions...and that is what proportions are....nothing but equivalent fractions

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Solve: 2cos(x)-square root 3=0 for 0 less than x less than 2 pi

Leona [35]

Answer:

The general solution of $cos x = cos(\frac{\pi }{6})$ is

x = 2nπ± $\frac{\pi }{6}$

The general solution values

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

Step-by-step explanation:

Explanation:-

Given equation is

$2cosx-\sqrt{3} =0 for 0$

$2cosx =\sqrt{3}$

Dividing '2' on both sides, we get

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

$cos x = cos(\frac{\pi }{6})$

General solution of cos θ = cos ∝ is θ = 2nπ±∝

Now The general solution of $cos x = cos(\frac{\pi }{6})$ is

x = 2nπ± $\frac{\pi }{6}$

put n=0

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

Put n=1

$x = 2\pi +\frac{\pi }{6} = \frac{13\pi }{6}$

$x = 2\pi -\frac{\pi }{6} = \frac{11\pi }{6}$

put n=2

$x = 4\pi +\frac{\pi }{6} = \frac{25\pi }{6}$

$x = 4\pi -\frac{\pi }{6} = \frac{23\pi }{6}$

And so on

But given 0 < x< 2π

The general solution values

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

6 0

3 years ago

Please help me find the area of the parallelogram.

deff fn [24]

Answer:

Step-by-step explanation:

What is the height I am guessing it is 70. But I will do both 14x8 is 112 or If it is 70. 70x14 is 980 HOPE THIS HELPS

3 0

3 years ago

What is the approximate volume of a cone with a height of 6mm and radius of 18 use 3.14 to approximate pi

Mandarinka [93]

Hello from MrBillDoesMath!

Answer:

2035.8 (approximately)

Discussion:

The volume of a cone or radius r and height h is given by the formula:

Volume = (1/3) Pi * r^2 * h. In our case this is:

V = (1/3) Pi * (18)^2 * 6

=(1/3) Pi * 324 * 6 => 324/3 = 108

= 108 * 6 Pi => 108 *6 = 648

= 648 * Pi => approximating Pi by 3.14

= 648 * 3.14

= 2035.8 (approximately)

Thank you,

MrB

5 0

3 years ago

Y=1/2x-1 y=-x+2 what is x and y

xenn [34]

I hope this helps you

-x+2=1/2x-1

2+1=1/2x+x

3=3/2x

x=2

y= -2+2

y=9

5 0

4 years ago

If you triple one eighth of my number you get 9

zaharov [31]

9÷3=3

3x8=24

So your answer is 24!

3 0

3 years ago

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