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3 years ago

Anybody know how to do this, it's about angles.

Mathematics

2 answers:

gizmo_the_mogwai [7]3 years ago

7 0

Step-by-step explanation:

45°+90°+60°+X°=360° (being complete angle)

or,195°+X°=360°

or,X°=360°-195°

or,X°=165°

Therefore,valueof X is 165°.

pochemuha3 years ago

4 0

Answer:

165

Step-by-step explanation:

The sum of angles at a point is always 360 degrees and you know all the angles apart from x. so 360-90-45-60=165.

Better notation would be 360 = x+45+60+90 and then you have to find out what x is by rearangin the equation.

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chubhunter [2.5K]

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3 years ago

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3 years ago

Find all solutions to the equation. cos^2 x +2cosx+1=0

Schach [20]

$x= \pi$

Step-by-step explanation:

$\cos^2x+\cos x+1=0$

Let $u= \cos x$

Then $u^2+2u+1=(u+1)^2=0$

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3 years ago

The value of homes sold in Hampton VA are normally distributed with a mean of $200,000 and a standard deviation of $10,000. If 1

LenKa [72]

Answer:

84%

Step-by-step explanation:

What we must do is calculate the z value for each value and thus find what percentage each represents and the subtraction would be the percentage between those two values.

We have that z is equal to:

z = (x - m) / (sd)

x is the value to evaluate, m the mean, sd the standard deviation

So for 190000 we have:

z = (190000 - 200000) / (10000)

z = -1

and this value represents 0.1587

for 230000 we have:

z = (230000 - 200000) / (10000)

z = 3

and this value represents 0.9987

we subtract:

0.9987 - 0.1587 = 0.84

Which means that it represents 84% of the houses

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3 years ago

Anybody know how to do this, it's about angles. ​

Anybody know how to do this, it's about angles.