So we want to know what do we need to measure to determine the wavelength of the wave on the image. A wavelength is the distance between peaks of the wave. More generally, the distance on which the wave shape repeats. So on the image we need to measure X to determine the wavelength. So the correct answer is X.
Answer:
X = 1 , -2
Step-by-step explanation:
Given in question as,
(log4(x² + x))² = 0.25
log4(x² + x) = 0.5
Applying log base property if log(a)X = b, then X =a^b
Or, x² + x = 4^0.5
x² + x = 2
x² + x - 2 = 0
x²+2x-x-2 = 0
(x + 2) (x - 1) = 0
So, x = 1 and -2 Answer
Answer:
<h2>Below</h2>
Step-by-step explanation: Let the unknown no be x
1.
2.
3. The sum of the product and of 5 and a cubed number and 9
Total SA = top + bottom + 2 (short side) + 2 (long side)
top = bottom = 5×3 = 15
short side = 7×3 = 21
long side = 7×5 = 35
SA = 2 (15) + 2 (21) + 2 (35) = 30+42+70 = 142
So 142 - 121 = 21, so the missing face is a short side of 7×3
