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3 years ago

12

A bag contains 25 marbles, some blue and some green. The ratio of blue marbles to green ones is 3:2 how many green marbles are t

here?

1 answer:

Katarina [22]3 years ago

6 0

There are 10 green marbles.

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Describe the topics in this unit in your own words by explaining FIVE of the vocabulary words/phrases below. You will receive tw

daser333 [38]

Answer:

I'm sorry but I don't see any vocabulary words.

Step-by-step explanation:

4 0

3 years ago

3(1-3x)=2(-4x+7) solve

Rudiy27

Simplify the left side.

Tap for more steps...

3−9x=2(−4x+7)

Simplify the right side.

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3−9x=−8x+14

Move all terms containing x

to the left side of the equation.

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3−x=14

Move all terms not containing x

to the right side of the equation.

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−x=11

Multiply each term in x=−11

by −1

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x=−11

Hope this helps!

8 0

3 years ago

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The lengths of lumber a machine cuts are normally distributed with a mean of 106 inches and a standard deviation of 0.3 inch. (

Vinvika [58]

Answer:

a) $P(X>106.11)=P(\frac{X-\mu}{\sigma}\frac{106.11-106}{0.3})=P(z>0.37)$

And we can find this probability with the complement rule:

$P(z>0.37)=1-P(z$

b) $z =\frac{106.11- 106}{\frac{0.3}{\sqrt{44}}}= 2.431$

And if we use the z score we got:

$P(z>2.431) =1-P(z$

Step-by-step explanation:

Let X the random variable that represent the lengths of a population, and for this case we know the distribution for X is given by:

$X \sim N(106,0.3)$

Where $\mu=106$ and $\sigma=0.3$

Part a

We are interested on this probability

$P(X>106.11)$

And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

And using this formula we got:

$P(X>106.11)=P(\frac{X-\mu}{\sigma}\frac{106.11-106}{0.3})=P(z>0.37)$

And we can find this probability with the complement rule:

$P(z>0.37)=1-P(z$

Part b

For this case we select a sample of n =44 and the new z score formula is given by:

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score we got:

$z =\frac{106.11- 106}{\frac{0.3}{\sqrt{44}}}= 2.431$

And if we use the z score we got:

$P(z>2.431) =1-P(z$

6 0

3 years ago

57.4 divided by 10???????

Gnesinka [82]

57.4/10=5.74
the answer is 5.74

6 0

3 years ago

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PLEASE HELP WORTH 99 POINTS AND CORRECT ANSWER WILL GET BRAINLIEST

Soloha48 [4]

Hello!

I believe the answers are:

A) The vertex is (1, −6)

C) The graph has a minimum.

I hope it helps!

7 0

3 years ago

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