9514 1404 393
Answer:
(b) (-3, -1)
Step-by-step explanation:
Differences between adjacent f(x) values are ...
-31, -13, -1, +5, +5, -1, -13
The function is increasing on intervals where the differences are positive: between (-3, -11) and (-1, -1). That is ...
f(x) is increasing on (-3, -1)
Find what is x.
the total interior angle of the triangle is 180 degrees
you can use this formula (n-2)180, n is the number of sides of the shape
find what is x:
180-37-22=121
use the sin rule whereby,
(sin 121)/4.357=(sin 22)/a
(sin 121)a=( 4.356 ×(sin22) )
a= (4.356× sin22) /(sin 121)
type in the calculator to find what is a.
Answer:
7. ∠CBD = 100°
8. ∠CBD = ∠BCE = 100°; ∠CED = ∠BDE = 80°
Step-by-step explanation:
7. We presume the angles at A are congruent, so that each is 180°/9 = 20°.
Then the congruent base angles of isosceles triangle ABC will be ...
∠B = ∠C = (180° -20°)/2 = 80°
The angle of interest, ∠CBD is the supplement of ∠ABC, so is ...
∠CBD = 180° -80°
∠CBD = 100°
__
8. In the isosceles trapezoid, base angles are congruent, and angles on the same end are supplementary:
∠CBD = ∠BCE = 100°
∠CED = ∠BDE = 80°
H=1/3+1/60d,d=R Hope this is correct.
Answer: 55
Step-by-step explanation:
just add 41.5 on 13.5 and that is x
