All categories

3 years ago

What is the value of x in the trangle? Enter your answer in the box. Round your final answer to the nearest hundredth.

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Use trigonometry.

cos(18°) = x/25

Multiply both sides by 25.

cos(18°)25 = x

23.7764129074 = x

We round off to the nearest hundredth. This means to round off to two decimal places.

Doing so, we get 23,78 cm = x.

You might be interested in

An object on the moon weighs about 0.17 of what it would weigh on earth.

Ivahew [28]

The answer would be E.

All you have to do is multiply 185 by 0.17 and you get your answer, which would be E.

3 0

3 years ago

Read 2 more answers

Place each number in its correct location on the numberline.

sukhopar [10]

Answer:

Step-by-step explanation:

-8.5

-|4.5|

-3.5

-1.5

|-3.5|

4.5

|5.5|

Download pdf

3 0

3 years ago

The vertices of quadrilateral E F G H are E (-7,3) , F (-4,6) , G (5, -3) , and H (2,-6). What kind of quadrilateral is E F G H?

Norma-Jean [14]

Answer:

square

Step-by-step explanation:

The opposite angles are congruent, the diagonals bisect each other, the opposite sides are parallel, the diagonals bisect the angles

7 0

3 years ago

Read 2 more answers

General solutions of sin(x-90)+cos(x+270)=-1<br> {both 90 and 270 are in degrees}

mixer [17]

Answer:

$\left[\begin{array}{l}x=2\pi k,\ \ k\in Z\\ \\x=-\dfrac{\pi }{2}+2\pi k,\ k\in Z\end{array}\right.$

Step-by-step explanation:

Given:

$\sin (x-90^{\circ})+\cos(x+270^{\circ})=-1$

First, note that

$\sin (x-90^{\circ})=-\cos x\\ \\\cos(x+270^{\circ})=\sin x$

So, the equation is

$-\cos x+\sin x= -1$

Multiply this equation by $\frac{\sqrt{2}}{2}:$

$-\dfrac{\sqrt{2}}{2}\cos x+\dfrac{\sqrt{2}}{2}\sin x= -\dfrac{\sqrt{2}}{2}\\ \\\dfrac{\sqrt{2}}{2}\cos x-\dfrac{\sqrt{2}}{2}\sin x=\dfrac{\sqrt{2}}{2}\\ \\\cos 45^{\circ}\cos x-\sin 45^{\circ}\sin x=\dfrac{\sqrt{2}}{2}\\ \\\cos (x+45^{\circ})=\dfrac{\sqrt{2}}{2}$

The general solution is

$x+45^{\circ}=\pm \arccos \left(\dfrac{\sqrt{2}}{2}\right)+2\pi k,\ \ k\in Z\\ \\x+\dfrac{\pi }{4}=\pm \dfrac{\pi }{4}+2\pi k,\ \ k\in Z\\ \\x=-\dfrac{\pi }{4}\pm \dfrac{\pi }{4}+2\pi k,\ \ k\in Z\\ \\\left[\begin{array}{l}x=2\pi k,\ \ k\in Z\\ \\x=-\dfrac{\pi }{2}+2\pi k,\ k\in Z\end{array}\right.$

4 0

3 years ago

Find the inverse of y=log(-2x)

kodGreya [7K]

Answer:f

−

(

Step-by-step explanation:

5 0

3 years ago

What is the value of x in the trangle? Enter your answer in the box. Round your final answer to the nearest hundredth.​

What is the value of x in the trangle? Enter your answer in the box. Round your final answer to the nearest hundredth.