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otez555 [7]
3 years ago
6

Find the value of x, rounded to the nearest tenth.

Mathematics
1 answer:
V125BC [204]3 years ago
7 0

Answer:

x=6.2

Step-by-step explanation:

So to find this we can use the trignometric function sin(Θ):

Perpendicular = x

Hypotonuse = 18

Θ = 20°

sin(Θ) = \frac{Perpendicular}{Hypotonuse}

Substituting our values we get:

Sin(20°) =\frac{x}{18}

Using a calculator we get:

0.34202 = \frac{x}{18}

x=0.34202*18

x=6.15636

So rounding that to the nearest tenth :

x=6.2

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PtichkaEL [24]

Answer:

x= 102 degrees

Step-by-step explanation:

It is an isosceles triangle, which means that it has two equal sides and angles, so the angles opposite of 3.3 are going to be the same or 39 degrees, which means, 39 + 39 is 78 and 180 - 78 is 102 and x=102 degrees.

5 0
3 years ago
Y = x^2+ 7x - 5 can be written in the form y = (x + a)^2+b
BARSIC [14]

Answer:

see explanation

Step-by-step explanation:

The equation of a parabola in vertex form is

y = (x - h)² + k (h, k) are the coordinates of the vertex

Given y = x² + 7x - 5

To express in vertex form use the method of completing the square

add/subtract ( half the coefficient of the x- term )²

y = x² + 2( \frac{7}{2} )x +\frac{49}{4} - \frac{49}{4} - 5

y = (x + \frac{7}{2} )² - \frac{49}{4} - \frac{20}{4}

y = (x + \frac{7}{2} )² - \frac{69}{4}

Hence

a = \frac{7}{2} and b = - \frac{69}{4}

8 0
3 years ago
Одна зі сторін прямокутника в 11 разів менша від другої. Знайдіть
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for the plug-in settings to determine

Step-by-step explanation:

GG from Shahs of sunset Blvd suite is the best way to the answer to the answer to the answer to the plug-in the plug-in the whole thing is I don't have a email the e I m not sure if you have any questions or concerns please visit the plug-in settings to determine

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1 year ago
II. Using Radians to Measure Arcs and Angles
padilas [110]
Pi radians is 180 degrees.
A
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Can someone please help me​
Svetllana [295]

Step-by-step explanation:

I think its 2/6 becuase its bigger

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3 years ago
Read 2 more answers
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