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rodikova [14]
3 years ago
11

Can someone plz help me on this plz I beg u

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0

Answer:

8

Step-by-step explanation:

So, lets go over a few things:

First off, all triangles have a total angle of 180 degrees.

Secondly, we know that the first two angles are 57 and 51.

Thirdly, we know that the missing angle is 9x

To solve this, we must add together the known angles, subtract them fro 180, and divide that by 9. This will give us the missing x value.

So, add together the two angles we know:

57+51

=

108

So we know 108 degrees of our triangle. We must find whats left of the 180.

To do this, subtract 108 from 180:

180-108

=

72

So our remaining angle is 72 degrres.

But recall that x isnt the misisng angle, 9x is.

So, to get x on its own, we must divide both the missing angle and 9x by 9:

72=9x

---  ---

9   9

=

8=1x

So now we know that x equals 8.

I hope this helps! :)

a_sh-v [17]3 years ago
3 0

Answer:

X = 8

Step-by-step explanation:

Okay so we know that there are a total of 180 degrees in every triangle. We need to create the equation to define the triangle's angles. 51 + 57 + 9x = 180. Then, we will solve for x.

180 = 51 + 57 + 9x  we are going to simplify the equation by solving what we can

180 = 108 + 9x         * Now we will isolate x

180 - 108 = 9x          * Solve the left side of the equation

72 = 9x                     * Divide both sides by 9

8 = x                    

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A 15 ft ladder makes a 52° angle with the ground. How far will the top of the ladder be above the ground.
levacccp [35]

Answer:

11.820 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that ...

Sin = Opposite/Hypotenuse

The length of the ladder is the hypotenuse of a right triangle with 52° as the base angle. The side opposite is the height up the building where the top of the ladder rests. So, you have the relation ...

sin(52°) = height/(15 ft)

Multiplying by the denominator gives you ...

height = (15 ft)·sin(52°) ≈ 11.820 ft

___

You may need to round this number appropriately.

5 0
3 years ago
Find 2.4% of $109. Show work.
Alex73 [517]

Answer:

$2.62

Step-by-step explanation:

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3 years ago
Recursive formula of the arithmetic sequence 4,9,14,19
lukranit [14]

Answer:

4,9,14,19,24,29,34,39

4 0
2 years ago
Please help! I don't understand it
kifflom [539]
A)360/6 = 60. 180-60 =120 degrees i think
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5 0
3 years ago
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I need help ASAP................................
Anestetic [448]

Answer:

x = -1

Step-by-step explanation:

-2(x - 5) = 12

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8 0
3 years ago
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