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3 years ago

Find the value of x and 3x.

Mathematics

1 answer:

kozerog [31]3 years ago

3 0

Answer:

x = 90°

3x = 270°

Step-by-step explanation:

Split the shape in half through the plane of 3x and x.

We can find the angle of x/2 is 45°.

Since x/2 = 45°, then we can fid that x=90°.

To find 3x, we simply multiply 90° 3 times.

So 3x = 270°.

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If tan x=.67, and cos x=.83, what is sin x

Alexxandr [17]

Answer:

0.56

Step-by-step explanation:

sin x

tan x is defined as -------------

cos x

and we can solve this for sin x: sin x = (cos x)(tan x)

which here is: sin x = 0.83(0.67) = 0.56 (rounded up from 0.5561)

7 0

4 years ago

Given: ABC is similar to XYC. If BY = 6, YC = 10, AX = 18, then XC = 10.8 5 30 48

Sidana [21]

Answer:

The correct option is 3. The length of XC is 30.

Step-by-step explanation:

It is given that triangle ABC and triangle XYC are similar.

According to the properties of similar triangles, then corresponding sides of similar triangles are congruent.

In triangle ABC and triangle XYC,

$\frac{AB}{XY}=\frac{BC}{YC}=\frac{AC}{XC}$

Let the length of XC be x.

From the below figure it is notices that

$AC=AX+XC=18+x$

$BC=BY+YC=6+10=16$

$\frac{16}{10}=\frac{18+x}{x}$

$16x=180+10x$

$6x=180$

$x=30$

Therefore correct option is 3. The length of XC is 30.

3 0

3 years ago

Read 2 more answers

Zoe's mom is carpeting her room and needs to know the amount of floor space how many square feet of carpeting are needed for the

Radda [10]

The complete question in the attached figure

we know that
[Area of her bedroom]=[11*10]+[12*8/2]+[10*6]------> 218 ft²

the answer Part A) is
Are needed 218 ft² of carpeting for the room

[perimeter of her bedroom]=[11+10+11]+[12]+[6+10+6]+[8]-------> 74 ft

the answer Part B) is
Are needed 74 ft <span>of baseboards</span> for the room