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Sever21 [200]
3 years ago
10

The answer is A I just need help working it out

Mathematics
2 answers:
nordsb [41]3 years ago
5 0
STU + STR = 180
8x + STR = 180 [ STU = 8x ]
STR = 180 - 8x

STR = SRT [ RS ≈ ST ]

Now, In ΔSRT,
we have, RST = 7x - 54, STR = SRT = 180-8x
Their sum is 180, as it constitutes a triangle.

7x-54 + 2(180-8x) = 180
7x - 54 + 360 - 16x = 180
 306 - 9x = 180
9x = 306 - 180
9x = 306 - 180
x = 126/9
x = 14

So, option A is your answer.

Hope this helps!

Naya [18.7K]3 years ago
5 0
So A is the option and also the answer
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Marizza181 [45]

Answer:

56 meters.

Step-by-step explanation:

Please find the attachment.

Let the leaning tower's be h meters tall, when it was originally built.

We can see from our attachment that the side with length 55.86 meters is hypotenuse and h is adjacent side for 4 degree angle.

Since we know that cosine relates the adjacent and hypotenuse of a right triangle.

\text{Cos}=\frac{\text{Adjacent}}{\text{Hypotenuse}}

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\text{Cos (4)}=\frac{55.86}{h}

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6 0
3 years ago
Two cars leave from a town at the same time traveling in opposite directions. One travels 5 mph faster than the other. In 3 hour
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Let the slower cars speed equal X.

The faster cars speed would be X+5 ( 5 mph faster).


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The slower car was traveling at 42 mph and the faster car was traveling at 47 mph.




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