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3 years ago

Can someone help me answer these two questions I have only Enough points for 1question please

Mathematics

2 answers:

Alekssandra [29.7K]3 years ago

8 0

By adding two hours to 6:30, you get 8:30, then add the remaining 18 minutes to get 8:48 PM.

Then for the second one, subtract 8:30 from 2:00 to get an elapsed time of 6 hours. We check this by adding 6 hours to 2:00, and we see it gets us to 8:30 PM.

:)

IRISSAK [1]3 years ago

7 0

11) 8:48 I believe and I think that number 13 is 6 hours and 30 minutes

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A jar contains 12 red marbles numbered 1 to 12 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Fin

lora16 [44]

Answer:

$(a)P(Red)=\dfrac{2}{3}\\(b)P(Odd) =\dfrac{1}{2}\\(c)P(\text{Red or Odd Numbered})=\dfrac{5}{6}\\(d)P(\text{Blue or Even Numbered})=\dfrac{2}{3}$

Step-by-step explanation:

Number of Red Marbles{1,2,3,4,5,6,7,8,9,10,11,12},n(R)=12

Number of Blue Marbles{1,2,3,4,5,6},n(B)=6

Total Number of Marbles, n(S)=6+12=18

(a)Probability that the Marble is Red

$P(R)=\dfrac{n(R)}{n(S)} =\dfrac{12}{18} =\dfrac{2}{3}$

(b)Probability that the marble is odd-numbered.

Number of Odd-Numbered Balls, n(O)=9

$P(Odd)=\dfrac{n(O)}{n(S)} =\dfrac{9}{18} =\dfrac{1}{2}$

(c)Probability that the marble is red or odd-numbered.

n(Red)=12

n(Odd Numbered marbles)=9

n(Red and Odd Numbered Marbles)=6

$P(\text{Red or Odd Numbered})=P(Red)+P(Odd\:Numbered)-P(\text{Red and Odd Numbered)}\\=\dfrac{12}{18} +\dfrac{9}{18}-\dfrac{6}{18} =\dfrac{15}{18}\\P(\text{Red or Odd Numbered})=\dfrac{5}{6}$ (d)Probability that the marble is blue or even-numbered.

n(Blue)=6

n(Even Numbered marbles)=9

n(Blue and Even Numbered Marbles)=3

$P(\text{Blue or Even Numbered})=P(Blue)+P(Even\:Numbered)-P(\text{Blue and Even Numbered)}\\=\dfrac{6}{18} +\dfrac{9}{18}-\dfrac{3}{18} =\dfrac{12}{18}\\P(\text{Blue or Even Numbered})=\dfrac{2}{3}$

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3 years ago

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atroni [7]

Answer:

the top one

Step-by-step explanation:

the only y one with negative 2

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3 years ago

Data are collected on the 35 students in a college history course. Which of the following is not a variable for the data set?

BARSIC [14]

Answer:

Um.... did you forget to attach something because all I see is

<em>Data are collected on the 35 students in a college history course. Which of the following is not a variable for the data set?</em>

Step-by-step explanation:

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3 years ago

Select the table that represents the function x2 + 4x

Anvisha [2.4K]

Answer:

Table 1

Step-by-step explanation:

Check Table 1:-

x = -4 gives y = (-4)^2 + 4(-4) = 0

x = -2 gives y = (-2)^2 - 2(-2) = -4

x = 0 gives 0 + 0 = 0

x = 1 gives 1^2 + 4 = 5

That's the one!

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3 years ago

Read 2 more answers

(x - 3)2<br> k.<br> + 2x - 4 for x = 5

UNO [17]

Answer:

4k + 6

Step-by-step explanation:

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