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RUDIKE [14]
3 years ago
7

6.) Evaluate the expressions below for the given values.

Mathematics
2 answers:
valkas [14]3 years ago
7 0

Answer:

Answer below. Hope it helps.

Step-by-step explanation:

a. 2x + (x - 6)    {x = 14}

= 2*14 + (14 - 6)

= 28 + 8

= 36

b. n² + n + 1    {n = 8}

= 8² + 8 + 1

= 64 + 9

= 73

c. (r - 10) (r + 2)    {r = 13}  

= (13 - 10) (13 + 2)

= 3 * 15

= 45

Andrei [34K]3 years ago
5 0
The correct answer will be 45! Hope you do good!
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Jaime has a board that is 8 feet long. He cuts the board into three equal pieces. How long is each piece.
padilas [110]
It rounds to 2.67 feet long

You divide 8 by 3 and you will get 2.6666.... So you round to the tenth or hundreth
6 0
3 years ago
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Determine the quotient:2 4/7 ÷1 3/6
Lisa [10]
12/7. You put the numbers into mixed numbers giving you 18/7 and 9/6. For division you flip the second fraction and multiply them together. So you do 18/7 x 6/9. You're also able to cross cancel 18 and 9 giving you 2/7 x 6/1. 6 x 2 is 12 and 7 x 1 is 7. Your answer is 12/7.
3 0
4 years ago
What is the expected value?
DochEvi [55]

Answer:

2.1

Step-by-step explanation:

The expected value of a probability is given by the formula:

E(x) = Σxp(x)

Therefore from the table showing the winnings of a game, the expected value of the probability distribution is:

E(x) = Σxp(x) = (0 * 0.5) + (2 * 0.2) + (4 * 0.15) + (6 * 0.1) + (10 * 0.05)

E(x) = 0 + 0.4 + 0.6 + 0.6 + 0.5 = 2.1

Hence we can conclude that the expected value of the winnings of the game is 2.1.

8 0
3 years ago
If x = 6 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the eq
galben [10]

Answer:

The discriminant equals to 0

Step-by-step explanation:

We have to remember our discriminant rules;

d > 0, we have 2 real roots

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5 0
3 years ago
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If a sample of 99 bowlers were taken from a population of 466 bowlers,x could refer to the mean of how many bowlers scores
otez555 [7]

Answer:

99

x is a mean of 99 bowlers scores

Step-by-step explanation:

Sample mean x is the mean of data samples taken from a population.

x is the sample mean

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Since, x is the mean of data samples, then x is the mean of the 99 sample data taken.

Therefore, x is a mean of 99 bowlers scores.

8 0
3 years ago
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