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Digiron [165]
2 years ago
6

What is the value of y? 17.5ft 12.5ft 11.6ft 16.5ft

Mathematics
1 answer:
FromTheMoon [43]2 years ago
3 0

Answer:

y = 16.5 ft

Step-by-step explanation:

• in the right triangle BCD :

cos(∠BCD) = 8/14

________

• In the right triangle ABC :

cos(∠BCA) = 14/(8+y)

________

Since ∠BCD and ∠BCA are the same one

then

cos(∠BCD) = cos(∠BCA)

Therefore

\frac{8}{14} =\frac{14}{y+8}

\Longleftrightarrow 8(y+8)=14^2

\Longleftrightarrow 8y+64=196

\Longleftrightarrow 8y=196-64

\Longleftrightarrow 8y=132

\Longleftrightarrow y=\frac{132}{8}

\Longleftrightarrow y=16.5

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Answer:

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6 0
3 years ago
The tables below show the values of y corresponding to different values of x:
Zanzabum
Table A represent a function, and Table B does not.
Why?
Table to be a function, need to satisfy following conditions (look at the .jpeg image attached with this answer):
1. condition: In first circle, EVERY element has to be connected with SOME of the elements in second circle
2. condition: In first circle, there MUSTN'T be an element that has MORE THAN ONE connection with elements in second circle
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Table A satisfies BOTH of these conditions; that is why table A is indeed a function.
Table B satisfies FIRST condition but it does not satisfy the SECOND condition, that is why it is NOT a function.

7 0
4 years ago
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