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Gwar [14]
3 years ago
8

Find the probability of throwing a sum of 4 at least 6 times in 9 throws of a pair of fair dice.

Mathematics
1 answer:
lora16 [44]3 years ago
4 0
4/6 with 2 throws left i think.
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Plz prove this for me.....
s344n2d4d5 [400]

I've answered your other question as well.

Step-by-step explanation:

Since the identity is true whether the angle x is measured in degrees, radians, gradians (indeed, anything else you care to concoct), I’ll omit the ‘degrees’ sign.

Using the binomial theorem, (a+b)3=a3+3a2b+3ab2+b3

⇒a3+b3=(a+b)3−3a2b−3ab2=(a+b)3−3(a+b)ab

Substituting a=sin2(x) and b=cos2(x), we have:

sin6(x)+cos6(x)=(sin2(x)+cos2(x))3−3(sin2(x)+cos2(x))sin2(x)cos2(x)

Using the trigonometric identity cos2(x)+sin2(x)=1, your expression simplifies to:

sin6(x)+cos6(x)=1−3sin2(x)cos2(x)

From the double angle formula for the sine function, sin(2x)=2sin(x)cos(x)⇒sin(x)cos(x)=0.5sin(2x)

Meaning the expression can be rewritten as:

sin6(x)+cos6(x)=1−0.75sin2(2x)=1−34sin2(2x)

3 0
3 years ago
Good morning please help me im in desperate need thxs
Marat540 [252]

Answer:

Should be 4/7

Hope it helps have a good day!

7 0
3 years ago
PLSSS HELPP ILL MARK BRAINLIEST!!!!
Allisa [31]

Answer:

c ????????

Step-by-step explanation:

4 0
3 years ago
The angle of depression from the top of a flag pole to a point on the ground is 30°. If the point on the ground is 75 feet from
Ber [7]
The angle of depression is the angle that is created from a horizontal line drawn from the upper angle of the right triangle that is created in this situation. The angle of depression is an angle exterior to the triangle. It is complementary to the interior angle. So if the angle of depression is 30 and lie outside the triangle, the interior angle has to measure 60. The pole creates a 90 angle with the ground, so what we have here is a 30-60-90 triangle. The one base angle is the right angle (the one the pole makes with the ground) and the other base angle measures 30. We are given the length of the base leg as 75 and we are looking for the height of the pole (the other leg). You would use the tangent ratio to solve for the height of the pole.
Tan(30)=x/75, and 75 tan(30)=x. Doing that on your calculator in degree mode gives you a pole height of 43.3 feet, or 43 feet (which is the height to the nearest foot)
8 0
3 years ago
The circumference of a circle can be found using the formula C = 2r.
spayn [35]
C = 2r in terms of r is
C/2 = r

The answer is C/2 = r

8 0
3 years ago
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