21,191.
If 3\(^y\) = 243, find the value of y.
A.
2
B.
3
C.
4
D.
5
E.
6
Correct answer is D
3\(^y\) = 243;
3\(^y\) = 3\(^5\)
y = 5
21,192.
A.
21
B.
9
C.
7
D.
4
E.
3
Correct answer is A
Let the integer = y
∴∴ 5y - 2y = 63
3y = 63 ⟹⟹ y = 21
21,193.
A.
25.7o
B.
44o
C.
51.43o
D.
98o
E.
114.55o
Correct answer is E
L = 14cm, r = 7cm; \(\theta\)= ?
L = \(\frac{\theta}{360}\) x 2πr
14= \(\frac{\theta}{360}\) x 2π(7)
\(\theta = \frac{360 \times 14}{44}\)
=114.55°
21,194.
Using the above graph, if 10o < x < 60o, what is the value of x for which sin x = cos x?
A.
0o
B.
20o
C.
30o
D.
45o
E.
50o
Correct answer is D
From the graph; when sin x = cos x
x = 45o
21,195.
A.
3.05cm2
B.
8.20cm2
C.
16.20cm2
D.
24.40cm2
E.
48.8cm2
Correct answer is E
Area of ABDE = b x h
12.2 x 4 = 48.8cm 2
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