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3 years ago

1. The numbers 1 through 15 were each written on

SAT

1 answer:

AleksandrR [38]3 years ago

7 0

The probability that a paper with a number less than 9 is written on it is 0.533

Recall :

Probability = Required outcome ÷ total possible outcomes

Numbers less than 9 = 1, 2, 3, 4, 5, 6, 7, 8 = 8

Total possible outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 = 15

Hence, P(less Than 9) = 8/15 = 0.533

Therefore, the probability of picking a paper with a value less than 9 is 0.533

Learn more : brainly.com/question/18405415

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Answer:

3.5 K

Explanation:

When a sample of a substance releases heat energy, its temperature decreases according to the equation:

$Q=mC(T_f-T_i)$

where

Q is the heat energy released

m is the mass of the substance

C is the specific heat capacity

$T_i$ is the initial temperature

$T_f$ is the final temperature

For the block of brass in this problem, we have:

m = 0.1 kg is the mass

Q = -56.4 J is the heat energy released (negative since it is released)

C = 380 J/kg K is the specific heat capacity of brass

$T_i=5 K$ is the initial temperature

Solving for $T_f$ , we find the final temperature:

$T_f=T_i + \frac{Q}{mC}=5+\frac{-56.4}{(0.1)(380)}=3.5 K$

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