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Let's see if we can't be logical here......Pick a formula and see what it yields. For example, choose D.
For n = 1 ---> -1 x 4^1 ----> -1 x 4 = -4, when the correct value is 1. Therefore D is out.
Try C. For n = 1 ---> 1 x 4^(1-1) ---> 1 x 4^0 ----> 1 x1 ---> 1, So it is correct for n =1. How about
n=2? 1 x 4^(2-1) = 1 x 4^1 = 1 x 4 = 4, when the correct answer is -4. Therefore C is out
I'm sure you can do the remaining two choices....
The statement EF=2.GF (Option A) and the statement
(Option C) are true for the ΔEFG.
<h3>What are trigonometric ratios?</h3>
The six trigonometric ratios of a right-angle triangle are Sin, Cos, Tan, Cosec, Sec and Cot. Trigonometric ratios are used to measure the sides of the right triangle.
Given that in ΔEFG, m∠E=30°, m∠F=60° and m∠G=90°.
Wow, sin 30°
⇒
⇒EF=2.GF
and sin 60°
⇒
⇒
Therefore, the statement EF=2.GF (Option A) and the statement
(Option C) are true for the ΔEFG.
To learn more about trigonometric ratios visit:
brainly.com/question/1201366.
#SPJ1
Answer:
125 cu
Step-by-step explanation:
5 x 5 x 5 = 125
Answer:
x=11/5
Step-by-step explanation:
Firstly you should transfer the denominator to the RHS from LHS
So you'll get
2x+1=3(-x+4)
so now
2x+1=12-3x
2x+1+3x=12
5x+1=12
5x=12-1
5x=11
x=11/5