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melisa1 [442]
3 years ago
11

Plz help me i cant figure it out

Mathematics
1 answer:
Lelechka [254]3 years ago
5 0

Answer:

35 degrees

Step-by-step explanation:

triangle is always a total of 180 degrees

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Trigonometry
Natasha_Volkova [10]

Answer:

Step-by-step explanation:

For a triangle the area is

A=\frac{1}{2}bh

If our triangle is isosceles and the 2 congruent sides each measure 4 and they include an angle of 40 degrees, let's say that the vertex angle is 40 and the sides that are not the base each measure 4.  If we drop an altitude from the vertex to the base, we cut the triangle into 2 right triangles, with the vertex angle being 20 degrees and the hypotenuse being 4.  To find the base, then, which is opposite the angle, we use the sin ratio:

sin(20)=\frac{b}{4} and

4sin(20) = b so

b = 1.368

But we need the whole base, and that is only half of it.  So

2b = 2.736

To find the height, which is adjacent to the angle, we use the cos ratio:

cos(20)=\frac{h}{4} and

4cos(20) = h so

h = 3.759

Now we have enough info to find the area of the triangle using the triangle area formula from above:

A=\frac{1}{2}(2.736)(3.759) and

A = 5 meters squared.

7 0
2 years ago
In ΔTUV, u = 41 cm, ∠T=85° and ∠U=9°. Find the length of t, to the nearest 10th of a centimeter.
german

Answer:

261.1

Step-by-step explanation:

Wizardry

7 0
3 years ago
Express 15$ for 10 gallons as a unit rate
9966 [12]

That would be $1.50 per Gallon

6 0
3 years ago
The angles in a pentagon are in a ratio of 7:6:5:5:4. find the measure of the smallest angle
kondaur [170]
This is so hard im so sry i dont get it
6 0
3 years ago
I need help with finding x and y that I can graph from this equation. Need help ASAP don’t mind the first probl just somebody he
Zepler [3.9K]

Answer:


Step-by-step explanation:

y=-3x+5

y=-3(1)+5

y=-3+5

y=2

(1,2)


y=-3x+5

y=-3(2)+5

y=-6+5

y=-1

(2,-1)


y=-3x+5

y=-3(3)+5

y=-15+5

y=-10

(3,-10)

3 0
3 years ago
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