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Sidana [21]
3 years ago
5

Suppose you spin the spinner once. Find the probability.

Mathematics
2 answers:
AleksandrR [38]3 years ago
8 0
1/2 for red, 1/4 for blue, or if you are speaking of both together it is 3/4
Firlakuza [10]3 years ago
4 0

Answer:

D 3/4

Step-by-step explanation:

There are 4 red spaces out of 8 total.  There are 2 blue spaces out of 8 total.  Together, this gives us 6 out of 8, or 6/8; this simplifies to 3/4.

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Find the diameter of a circle with an area of 6767 square centimeters.
scZoUnD [109]
  • Area=6767cm²

Diameter be d

Radius be r

  • πr²=6767
  • r²=6767/π
  • r²=2155
  • r=46.4cm

Diameter=2r=46.4(2)=92.8cm

6 0
2 years ago
Read 2 more answers
Help me❤️!!!!!!!!!!!
sweet-ann [11.9K]

Answer:

B

Step-by-step explanation: Because for inverse functions, domain and range of functions exchange. In simple words, domain of function h(x) = range of inverse function & range of function h(x) = domain of inverse function.

5 0
2 years ago
How do you solve 7/8+(4/8-2/4)
SCORPION-xisa [38]
The answer is 7/8 find a common denominator or cross multiply
4 0
2 years ago
The random variable x has the following probability distribution: x f(x) 0 .25 1 .20 2 .15 3 .30 4 .10 a. Is this probability di
Reptile [31]

Answer and Explanation:

Given : The random variable x has the following probability distribution.

To find :

a. Is this probability distribution valid? Explain and list the requirements for a valid probability distribution.

b. Calculate the expected value of x.

c. Calculate the variance of x.

d. Calculate the standard deviation of x.

Solution :

First we create the table as per requirements,

x      P(x)         xP(x)           x²            x²P(x)

0    0.25           0               0                0

1     0.20        0.20             1              0.20

2    0.15          0.3               4             0.6

3    0.30         0.9               9             2.7

4    0.10          0.4               16             1.6

   ∑P(x)=1     ∑xP(x)=1.8               ∑x²P(x)=5.1

a) To determine that table shows a probability distribution we add up all five probabilities if the sum is 1 then it is a valid distribution.

\sum P(X)=0.25+0.20+0.15+0.30+0.10

\sum P(X)=1

Yes it is a probability distribution.

b) The expected value of x is defined as

E(x)=\sum xP(x)=1.8

c) The variance of x is defined as

V=\sum x^2P(x)-(\sum xP(x))^2\\V=5.1-(1.8)^2\\V=5.1-3.24\\V=1.86

d) The standard deviation of x is  defined as

\sigma=\sqrt{V}

\sigma=\sqrt{1.86}

\sigma=1.136

5 0
3 years ago
Use the substitution method to solve the system of equations.
grandymaker [24]
Insert 3x - 7 for y in 15x - 5y = 14
15x - 5(3x - 7) = 14
15x - 15x + 35 = 14
0 = -21
There is no solution.
5 0
3 years ago
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