What is the algebraic expression for the word phrase "eight times the difference of h and five"?
1 answer:
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Answer:
2. C) 21.2 yd 3. B) angle IQL 4. B) 55 degree
Step-by-step explanation:
2. The area of an equilateral triangle is given by,
A = ------(1) where a = length of each side.
Here, a = 7 yd
so , putting a = 7 yd in (1) , we get,
A = sq. yd.
sq. yd.
3. B) angle IQL
4. Let, the centre of the circle be at O,
then, ∠DOB = 105° and ∠BOC = 145° (given)
so, ∠OBD =
=
= 37.5° [since the sum of three angles of a triangle is 180° and OB and OD are two radii of the same circle]
and, similarly, ∠OBC =
=
= 17.5° [since the sum of three angles of a triangle is 180° and OB and OC are two radii of the same circle]
so, ∠CBD = ∠OBD + ∠OBC
= 37.5° + 17.5°
= 55°