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mestny [16]
3 years ago
15

A psychology test has personality questions numbered 1,2,3, intelligence questions numbered 1,2,3,4, and attitude questions numb

ered 1,2. If a single question is picked at random, what is the probability that the question is an intelligence question OR has an odd number?
Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

Answer:

7/9.

Step-by-step explanation:

There are a total of 9 questions,

The  odd numbers are 1,1,1,3,3 =  a total of 5 .

Probability (it is an odd number) = 5/9.

Probability (It is an intelligence question of even number) = 2/9.

Required probability = 5/9 + 2/9

= 7/9.

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What is the radius of a sphere with a volume of 872 ft', to the nearest tenth of a foot?
Lena [83]

Answer:

5.9 ft

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

872 = 4/3 (3.14) r^3

872 =4.186666666 r^3

Divide each side by 4.1866666 on each side

872 / 4.186666666 = r^3

208.2802548 = r^3

Take the cube root of each side

(208.2802548)^(1/3) = r^3^(1/3)

5.927652012 = r

Rounding to the nearest tenth

5.9 ft

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4 years ago
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3 years ago
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8 0
3 years ago
In triangle XYZ, shown above, what is the value of cos(X)?
adell [148]

Answer:

A

Step-by-step explanation:

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