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malfutka [58]
2 years ago
6

Someone help me please

Mathematics
2 answers:
sergey [27]2 years ago
6 0

Answer:

74 degrees

Step-by-step explanation:

Pepsi [2]2 years ago
3 0

Answer:

104

Step-by-step explanation:

I think, from picture angle of B is 90.

Sum all of the angles must be 360, so angle in point R is

R=360-92-74-90=104

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Please help!!! ASAP the bottom number is 3 btw.
Nataliya [291]

Answer:

5*3=15

Step-by-step explanation:

3 0
3 years ago
Use the law of cosines to find the length of a
borishaifa [10]

Answer:

Step-by-step explanation:

You don't need the Law of Cosines, the Law of sines if what you need. You can't use the Law of Cosines because in order to find side a, you would need the length of side c and you don't have it. Using the Law of Sines is appropriate, knowing that angle B = 55:

\frac{sin55}{175}=\frac{sin42}{a} and solving for a:

a=\frac{175sin42}{sin55} so

a = 143.0

4 0
2 years ago
Create your own equation
guapka [62]

Answer:

45+20=65

21+33=54

90+10=100

100+30= 130

Step-by-step explanation:

45+20=65

Doesn't belong as it has an odd numbered answer where as all the others have even answers

HOPE THIS HELPS

6 0
2 years ago
A 13 ft ladder is resting on a wall. The angle the ladder makes with the floor is 45 degrees. How high off the ground is the top
PtichkaEL [24]

Answer: 9.19 ft

Step-by-step explanation:

Hi, since the situation forms a right triangle (see attachment) we have to apply the next trigonometric function.  

Sin α = opposite side / hypotenuse  

Where α is the angle of elevation of the ladder to the ground, the hypotenuse is the longest side of the triangle (in this case is the length of the ladder), and the opposite side (x) is distance between the top of the ladder and the ground.

Replacing with the values given:  

Sin 45 = x/ 13

Solving for x  

sin45 (13) =x  

x= 9.19 ft

Feel free to ask for more if needed or if you did not understand something.  

6 0
3 years ago
what is -8x-9=-21, can someone work out the problem and show me what they did to get there answer so i can understand it?
SashulF [63]

- 8x - 9 = - 21

Add 9 to both sides:

- 8x = - 12

Divide both sides by - 8:

x = -12/-8

x = -3/-2

x = 3/2 OR 1.5

Hope this answer helps :)

6 0
3 years ago
Read 2 more answers
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