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Mathematics

2 answers:

labwork [276]3 years ago

7 0

Answer:

Explanation:

So in the bag, there are 10 marbles, and 4 of them are blue, so if he drew from the bag 10 times, we can assume the fraction:

4/10

Next, we see that the denominator, or the number times Cade is drawing from the bag is 30, which makes us multiply most sides of the fraction by 3:

12/30

So I would say 12/30, but again, he wouldn't draw a blue exactly 4 times, and it may be more or less, so either 8/12....

Hope this helps!

Allisa [31]3 years ago

3 0

Answer:

C. 12

Step-by-step explanation:

Find the percentage of him drawing a blue marble.

4/10 = 0.4

He has a 40% chance of picking blue.

Find 40% of 30.

He would draw a blue marble around 12 times.

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Express the product of cos 30°and 45° in simple simplest radical form

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3 years ago

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If f(x) is discontinuous, determine the reason. f(x)= {x^2 +4, x<=1; x+3, x>1}

tester [92]

Answer:

Observe that f(x) is a continuous function when $x1$ because is a polynomial. The possible problem may occur in x=1.

Then, f(x) is discontinuous in x=1 if the limits of f to the right and the left of 1 exist and are different or if some of those limits doesn't exist.

Let's calculate the limits:

$lim_{x\rightarrow 1^+}f(x)=lim_{x\rightarrow 1}(x+3)=1+3=4$