3 years ago

Need help w this please

Mathematics

1 answer:

rusak2 [61]3 years ago

8 0

Solved using proportions.

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What is the Value of x in the equation 2.5x + 10 = x-0.5 ?

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Answer: 7

Step-by-step explanation:

$2.5x+10=x-0.5\\2.5x-x+10=-0.5\\1.5x=-0.5-10\\1.5x=-10.5\\x=\frac{10.5}{1.5}\\ x=7$

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Ryan spent 24 months living in San Diego.

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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%

Final answer:-

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

P(E) = 0.067 = 6.71%

3 0

3 years ago

Solve 33 1/2 of 48 Plz thanks <3

SIZIF [17.4K]

Answer:

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Step-by-step explanation:

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2 years ago

11. What is the vertex of ZLMN?

astraxan [27]

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according to the graph, the vertices of the
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hence the vertex (5,2)

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2 years ago