Answer:
4/8 = 20/x
20 x 8 = 160
160 ÷ 4 = 40
the student will attend 40 weeks of school
Answer:
155 or 160 if rounded is 160 if not
Step-by-step explanation:
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Answer: The correct option is (a), i.e., cos B= sin A.
Explanation:
It is given that the ∠B = ∠C and ∠D is a right angle.
Since two corresponding angles of both triangles are same, so by angel sum property three angles are also equal. Therefore by AAA rule both triangles are similar.
It is given that,


Using angle sum property angle C is written as,



By using quadrant concepts.

Therefore option A is correct.
Answer:
17
Step-by-step explanation:
3.5x4=14
14+3=17
The ladder reaches 40 feet up the wall.
41 squared (1681) minus 9 squared (81) is 1600. 40 is the square root of 1600.