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Sveta_85 [38]
3 years ago
5

Question: 1−cos2 x = A. sin2x B. -1

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

Sin^2 x

Step-by-step explanation:

Here, we want to evaluate;

1 - sin^2x

Mathematically ;

sin^2 x + cos^2 x = 1

Thus;

sin^2 x = 1 - cos^2 x

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A guitar string has a lenght of 0.5 m. If the string is vibrating with a wavelength of 0.25 m, what harmonic is it vibrating at?
bonufazy [111]

Answer:

4th

Step-by-step explanation:

string length is 0.5m and the wavelengths are 0.25meters. This tells us there are two complete waves in the guitar string. This gives us a total of four antinodes; thus we are in the fourth harmonic.

6 0
3 years ago
If u help me and answer correctly ill give brainlest thanks
Anna007 [38]

Answer:

10/4 in simplest form 5/2

Step-by-step explanation:

Since 2 goes into 10 and 5 you divide 2 by those two numbers which gives you 5/2

7 0
2 years ago
What is the approximate area of the shaded region?
vaieri [72.5K]
If we consider that the figure is a square and the white region of the figure is a circle, the area of the shaded region is:

S=S_{square}-S_{circle}=\ell^2-\pi r^2=10^2-\pi5^2=100-25\pi\\\\
S\approx100-25\cdot3.14=100-78.5\\\\
\boxed{S\approx21.5~cm^2}\Longrightarrow Alternative~D
7 0
3 years ago
whats th awnser if -(6×-5)=-6×+13 is that no solution,infinite solution,×=17/12,×=-17/12 please help me
Luba_88 [7]
Expanding the parentheses:-
-6x + 30 = -6x + 13
    +6x         + 6x

30 = 13
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4 0
3 years ago
Automobile warranty claims for engine mount failure in a troppo malo 2000 se are rare at a certain dealership, occurring at a me
Irina-Kira [14]
The probability that the dealership will wait at least 6 months until the next claim is solved by:We know that the mean number of occurrences per time unit is 0.1, then let’s denote this by λ
So: f (x) = 1 – e ^ -λx for x > 0
P (x > 6) = e^ -x
= e ^-0.1 * 6
= 0.5488
4 0
4 years ago
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