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NeTakaya
3 years ago
6

A coin is tossed four times. What is the probability of getting tails four times in a row?

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
7 0

Answer:

b)  1/32

Step-by-step explanation:

1/2 x 1/2 x 1/2 x 1/2 = 1/32

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A quiz consists of 20 multiple-choice questions find mean and standard deviation
worty [1.4K]

Since the problem is quite vague because the number of choice per question is not written here. I’ll just put for 4 choices and 5 choices each.

To compute for the 5 choices each:

Mean = np = 20 (1/5) = 4

Standard deviation = sqrt(npq) = sqrt (4*(4/5) = 1.79

 

To compute for the 4 choices each:

Mean = np = 20 (1/4) = 5

Standard deviation = sqrt(npq) = sqrt (5*(4/5) = 2

4 0
3 years ago
PLEASE HELP
shepuryov [24]

Remember

  • Its a dilation so the ratio of corresponding sides remains same like before .

So

  • All trigonometric ratios are also same in both traingles

Or

\\ \rm\hookrightarrow \dfrac{AB}{BC}=\dfrac{XZ}{YZ}

  • Hence sine is equal
  • So all trigonometric functions are also equal

#B

  • cosX=Base/Hypotenuse
  • cosA=AC/AB

So

  • AC equal to 2.05
  • AB=5.59
7 0
3 years ago
PLEASE ANSWER ASAP! ANSWER MUST HAVE AN EXPLANATION ON ORDER TO RECEIVE 10 POINTS AND THE BRAINLIEST ANSWER!!! THANKS!
Lana71 [14]
Remember (x^m)^n=x^(mn) and x^{m/n}=\sqrt[n]{x^{m}} (m^(2/3))^(1/2)=m^(2/6)=m^(1/3) m^(1/3)=∛m last one (rightmost)
4 0
3 years ago
If Grace were to invest 1000 at age 25 and not withdrawl any money until retirement at age 67 calculate the expected value of he
alukav5142 [94]

Answer:

9.25% monthly

.095/12 = .0079167

so every month multiply by

1.0079167

y = 1,000 (1.0079167)^(12x)

now just activate your calculator :)

Step-by-step explanation:

4 0
3 years ago
B^2-4ac would equal: y=2x^2-x-3
motikmotik

Answer:

25

Step-by-step explanation:

In this equation, ax^2+bx+c, b = -1, a = 2, and c = -3. Solving, (-1)^2 - 4(2)(-3) = 1 - (-24), or 25.

6 0
3 years ago
Read 2 more answers
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