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borishaifa [10]
4 years ago
13

Solve for y. A. 10 B.12 C. 15 D. 18

Mathematics
2 answers:
LiRa [457]4 years ago
8 0
<h2>Answer:</h2>

Option A is the correct answer.

The value of y is:

                A.  10

<h2>Step-by-step explanation:</h2>

From the figure we could see that:

   3x=90°

so on dividing both side of the equation by 3 we obtain:

  x=30°

and we see that ∠DBC=90°

Hence, we get:

2x+3y=90

on putting the value of x in the expression we get:

2×30+3y=90

i.e.  60°+3y=90°

⇒  3y=90°-60°

⇒  3y=30°

on dividing both side of the equation by 3 we obtain:

y=10°

         Hence, the value of y is:

                        A. 10

djverab [1.8K]4 years ago
4 0
Y=10°
If we're solving for the ninety degree angle, which I seem to doubt, then if 3x=90 then 2x=60 giving a missing total of 30. 30/3 equals 10
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