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insens350 [35]
3 years ago
11

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

6 0
3 years ago
Read 2 more answers
PLEASE HELP !!! THIS IS ALGEBRA 1 &lt;333
Annette [7]
Im not sure if this is right but:

1. b
2. c
3. b
4. a
5. c
8 0
3 years ago
Combine the like terms to create an equivalent expression<br> -k - ( - 8k)
Svetllana [295]

____________________________________________________

Answer:

7k

____________________________________________________

Step-by-step explanation:

We are trying to combine like terms with the expression: -k - ( - 8k)

We are pretty much solving it.

Solve:

-k - ( - 8k)

The "- ( -" turns into a plus sign.

So it would look like:

-k - -8k or -k + 8k

Now, you would finish solving

-k + 8k = 7k

____________________________________________________

3 0
3 years ago
Read 2 more answers
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