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3 years ago

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A jar contains 2 red, 1 white, and 3 blue marbles. Two marbles are drawn. If X equals the number of red marbles drawn, which of

the following tables shows the correct data?

1 answer:

nirvana33 [79]3 years ago

5 0

Where are the tables to the question?

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2x + 9 - 4(x+1) = 5x + 8

Serga [27]

I hope this helps you

2x+9-4x-4=5x+8

9-4-8=5x+4x-2x

-3=7x

x=-3/7

7 0

4 years ago

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Michael masters opens a web consulting business called masters consulting and completes the following transactions in March. Usi

erastova [34]

Answer: who is u

Step-by-step explanation:

tell me who u are

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3 years ago

As part of a promotion for a new type of cracker, free trial samples are offered to shoppers in a local supermarket. The probabi

irina [24]

Answer: Our required probability is 0.99338.

Step-by-step explanation:

Since we have given that

n = 100

p = 0.200

So, $np=100\times 0.2=20>5$

So, we can apply normal approximation.

Mean = 20

Standard deviation = $\sqrt{npq}=\sqrt{100\times 0.2\times 0.8}=\sqrt{16}=4=\sigma$

Since $z=\dfrac{\bar{X}-\mu}{\sigma}$

So, Probability that fewer than 30 but a packet after testing a free sample is given by

$P(X$

Hence, our required probability is 0.99338.

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3 years ago

Write 5% as a fraction and as a decimal.

professor190 [17]

Fraction: 1/20
Decimal: 0.05

4 0

4 years ago

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A rectangle is 6yards longer than it is wide. Find the dimensions of the rectangle if it’s area is 187 square yards

emmasim [6.3K]

Answer:

Width = 11 yards

Length = 17 yards

Step-by-step explanation:

First of all, the length of the rectangle is 6 yards longer than the width, this means, length = width + 6 yards. This dimensions can be represented on figure 1, where <em>w</em> is width, and <em>l</em>, for length.

We know the area of a rectangle is A = width x length

For our case 187 = w . (w + 6)

Using the Distributive Property for the multiplication we obtain

$187 = w^{2} +6w$

$w^{2} +6w-187 =0,$

Using the quadratic formula $w=\frac{-b\±\sqrt{b^{2}-4ac } }{2a}$ where a = 1, b = 6, c = - 187 and replacing into the formula, we will have:

$w=\frac{-6\±\sqrt{6^2-4(1)(-187)} }{2(1)}$

$w=\frac{-6\±\sqrt{36+748} }{2}=\frac{-6\±\sqrt{784} }{2}=\frac{-6\±28}{2}$

We have two options: $w=\frac{-6+28}{2}=\frac{22}{2}=11 yards$

Or

$w=\frac{-6-28}{2}=\frac{-34}{2}=-17 yards$ But a distance (width) can not be negative so, this answer for w must be discarded.

The answer must be width = 11 yards.

To find the length $l =\frac{187}{11}=17 yards$

6 0

3 years ago