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Rashid [163]
2 years ago
5

Please do number 11 for me.

Mathematics
1 answer:
dezoksy [38]2 years ago
4 0
Rule-3 angles of a triangle =180 degrees . One angle is a right angle which is 90 degrees so the remaining 2 must equal 90 so the equation is so 90=(15x)+(8x-2) and now we just have to solve what is the value of x.
First we move -2 to the other side of the equation as +2 so we get 92=15x+8x next we put the 15x and 8x together and get 23 so 92=23 times x. So we divide 92 by 23 and the value of x is 4
You might be interested in
When the angle of elevation of the sun is 78 degrees, a tree casts a 13 foot shadow. How tall is the tree?
oksian1 [2.3K]

Answer: 61.16 ft

Step-by-step explanation:

We can think in this situation as a triangle rectangle.

where:

The height of the tree is one cathetus

The shadow of the tree is the other cathetus.

We know that the angle of elevation of the sun is 78°, an angle of elevation is measured from the ground, then the adjacent cathetus to this angle is the shadow of the tree. And the opposite cathetus will be the height of the tree.

Now we can remember the relationship:

Tg(A) = (opposite cathetus)/(adjacent cathetus)

Where:

A = 78°

Adjacent cathetus = 13ft

opposite cathetus = height of the tree = H

Then we have the equation:

Tg(78°) = H/13ft

Tg(78°)*13ft = H = 61.16 ft

4 0
2 years ago
Consider the trianglular region with vertices (0,0) (6,0) and (0,6). find the x and y coordinates of the centroid
kondor19780726 [428]
Let A=(0,0)(x₁,x₂), B=(6,0)(x₂,y₂) and C=(0,6)(x₃,y₃)

Centroid of ΔABC is given by,

G(x,y) = [x₁+x₂+x₃/3 , y₁+y₂+y₃/3] = [0+6+0/3 , 0+0+6/3] = [2,2]
6 0
3 years ago
Guys help me solve this plzzz:(((;;(;;;((;
Maru [420]

Answer:

It should be 60 degrees

correct me if wrong but since it's supplementary, you subtract 155 - 35 then from 180 and you get 60

Im not 100% about this tho but like 75% sure

3 0
2 years ago
B = 4 and c = -5, evaluate b 2 - c 2
NISA [10]

Hey!

-------------------------------------------------

Steps To Solve:

~Substitute

(4)2 - (-5)2

~Multiply

8 - (-10)

~Subtract

18

-------------------------------------------------

Answer:

18

-------------------------------------------------

Hope This Helped! Good Luck!

4 0
3 years ago
Read 2 more answers
HELP PLEASEEEEE <br> WILL GIVE BRAINLIEST AND GOOD RATING!!!!
torisob [31]

Answer:

The second one

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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