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3 years ago

2 1/2 and 1/2 are reciprocals. True or false?

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

6 0

Answer:

False

Step-by-step explanation:

The reciprocal of 1/2 is 2/1.

The reciprocal of 2 1/2 is 2/5

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Y-intercept oftheparabola y = x2 – 2x – 3

inessss [21]

(X-3)(X+1)=0
X-3=0
X=3
X+1=0
X=-1

6 0

3 years ago

The graph above can be extrapolated to determine:

madam [21]

The correct answer is ABSOLUTE ZERO. I just took the quiz myself and got it right.

5 0

3 years ago

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Eric's class consists of 12 males and 16 females. If 3 students are selected at random, find the probability that they

Reptile [31]

Answer:

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

Step-by-step explanation:

Let 'M' be the event of selecting males n(M) = 12

Number of ways of choosing 3 students From all males and females

$n(M) = 28C_{3} = \frac{28!}{(28-3)!3!} =\frac{28 X 27 X 26}{3 X 2 X 1 } = 3,276$

Number of ways of choosing 3 students From all males

$n(M) = 12C_{3} = \frac{12!}{(12-3)!3!} =\frac{12 X 11 X 10}{3 X 2 X 1 } =220$

The probability that all are male of choosing '3' students

$P(E) = \frac{n(M)}{n(S)} = \frac{12 C_{3} }{28 C_{3} }$

$P(E) = \frac{12 C_{3} }{28 C_{3} } = \frac{220}{3276}$

P(E) = 0.067 = 6.71%

<u><em>Final answer</em></u>:-

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

3 0

3 years ago

75dollars with a 10 percent sales tax

Afina-wow [57]

With a 10 percent tax, you have 90 percent left. 75*.9=$67.50

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3 years ago

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In AABC, AB = 2 and AC = 11. Find m2C to the nearest degree.<br>help please

AlexFokin [52]

Answer:

Step-by-step explanation:

<h3>Calculating BC</h3><h3>BC = √2^2 + 11^2 </h3><h3>BC = √ 4+121</h3><h3>BC = √ 125 = 11.18</h3>

to find measure of angle C use sinerule

<h3>C = 10.305</h3><h3>C = 10 (approximately)</h3>

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2 years ago