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blagie [28]
3 years ago
8

A bag contains 14 red marbles and 6 blue marbles. two marbles are randomly drawn without replacement. find the probability that

both marbles are red
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
7 0
We take 2 marbles from 20 marbles and the total ways is 20x19:2=190
But we need only 2 red marbles and the ways is 14x13:2=91
And finally we do the division 91:190=91/190 is the probability we need
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A group of people want to buy tickets to a baseball game. At least 18 people need to buy tickets in order to get the group rate.
borishaifa [10]

Answer:

a or b

Step-by-step explanation:

it should be p≥18

greater then or equal to 18. because if you have 18, you can get the group rate and I'd you have more than 18 you can also get the group rate.

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What is the value of the expression -2^2+4x(-3) when x= -3
Kisachek [45]
It will be
(-2)^2+4*(-3)(-3) =40
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Steve hade 17 pencils in his backpack. this represents 5 more than 6/7 the number of pencils that Clyde has in his backpack
LenaWriter [7]

Answer:

Clyde has 14 pencils in his backpack

Step-by-step explanation:

Let x be the number of pencils that Clyde has in his backpack.

We can translate this statement “<u><em>Steve hade 17 pencils in his backpack. this represents 5 more than 6/7 the number of pencils that Clyde has in his backpack</em></u>” mathematically like this :

17=5+\frac{6}{7} x \\\\ \Longleftrightarrow 17-5=\frac{6}{7} x  \\\\ \Longleftrightarrow 12=\frac{6}{7} x \\ \\\Longleftrightarrow x=\frac{12\times 7}{6} =14

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Which equation matches the table?
OleMash [197]

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Step-by-step explanation

5 0
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Segment PE has endpoints P(-4,4) and E(0,-4). Find the coordinates of point Q such that PQ:QE is 1:3. Enter the coordinates belo
Natalka [10]

Answer:

(-3, 2)

Step-by-step explanation:

Given that point Q, partitions segment PE, such that PQ:QE is 1:3, coordinates of point Q is found using the formula below:

x = \frac{mx_2 + nx_1}{m + n}

y = \frac{my_2 + ny_1}{m + n}

Where,

P(-4, 4) = (x_1, y_1)

E(0, -4) = (x_2, y_2)

m = 1, n = 3

Plug in the necessary values to find x and y coordinates for point Q as follows:

x = \frac{mx_2 + nx_1}{m + n}

x = \frac{1(0) + 3(-4)}{1 + 3}

x = \frac{0 - 12}{4}

x = \frac{-12}{4}

x = -3

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y = \frac{-4 + 12}{4}

y = \frac{8}{4}

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The coordinates of the point Q are (-3, 2))

8 0
3 years ago
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