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Daniel [21]
3 years ago
7

A bag contains 9 red marbles and 18 blue marbles. If a representative sample contains 2 red ​marbles, then how many blue marbles

would you expect it to​ contain?
Mathematics
1 answer:
Ahat [919]3 years ago
4 0

Answer:

4

Step-by-step explanation:

9 x 2 Is 18 so you would multiply 2 x 2 as well

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Hope someone can help me with this
melomori [17]

The area of the circle, to two decimal places, is A = 3.14(1.8 m)^2

Then A = 10.17 m^2.

3 0
3 years ago
1. A given binomial distribution has a mean of 153.1 and a standard deviation of 18.2. Would a value of 187 be considered usual
Triss [41]

Answer:

Usual, because the result is between the minimum and maximum usual values.

Step-by-step explanation:

To identify if the value is usual or unusual we're going to use the Range rule of thumbs which states that most values should lie within 2 standard deviations of the mean. If the value lies outside those limits, we can tell that it's an unusual value.

Therefore:

Maximum usual value: μ + 2σ

Minimum usual value: μ - 2σ

In this case:

μ = 153.1

σ = 18.2

Therefore:

Maximum usual value: 189.5

Minimum usual value: 116.7

Therefore, the value of 187 lies within the limits. Therefore, the correct option is D.  Usual, because the result is between the minimum and maximum usual values.

8 0
3 years ago
Is the product of fifteen negative integers positive or negative?
enot [183]

Answer:

the sign of the product of 15 negative numbers will be negative

Step-by-step explanation:

Heya mate!!

The product of odd numbers is odd and the product of even numbers is even.

so 15 is an odd number then the sign of product is odd

Hope this helps!!!

3 0
3 years ago
Can you help me with this math problem? <br><br> (x+ 2) ^ 2 <br> (squared) <br><br> thankyou
Alex787 [66]
Answer: x^2 + 4x + 4

Explanation:
just expand, factor out, and add together.

(x+2)(x+2)

x • x = x^2
2x + 2x = 4x
2 • 2 = 4

x^2 + 4x + 4
8 0
3 years ago
Can someone answer this
Romashka [77]

Answer:

the answer is d  

Step-by-step explanation:

3 0
3 years ago
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