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stepladder [879]
3 years ago
13

Question 1: MultiplicationNew designs for a wastewater treatment tank have proposed three possible shapes, four possible sizes,

three locationsfor input valves, and four locations for output valves. How many different product designs are possible
Mathematics
1 answer:
joja [24]3 years ago
5 0

Answer:

36 possible designs

Step-by-step explanation:

3 x 3 = 9

9 x 4 = 36

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There are 7 balls in the bag: 3 blue, 2 red and 2 white. What is the probability that one would pick two balls of the same colou
bearhunter [10]

Answer:

5/21.

Step-by-step explanation:

Total number of balls = 7.

Prob(Blue on first pick) = 3/7

Prob(Blue on second pick) = 2/6 = 1/3

So Prob( 2 Blue's) = 3/7 * 1/3 = 3/21 = 1/7.

Prob(Red on first pick) = 2/7

Prob(Red on second pick) =  1/6

So Prob( 2 Red's) = 2/7 * 1/6 = 1/21.

Now the Probability of getting 2 white balls is the same as for the red balls

= 1/21.

Finally, the probability of 2 balls of the same colour

= 1/7 + 1/21 + 1/21

= 3/21 + 1/21 + 1/21

= 5/21.

8 0
2 years ago
Read 2 more answers
Identify the number that does not belong with the other three. Explain your reasoning. -<img src="https://tex.z-dn.net/?f=%20%5C
zhuklara [117]
Square root of 18 because it's the only irrational number.
6 0
4 years ago
Write a compound inequality that the graph could represent.
Free_Kalibri [48]
The answer is B!
I could explain further if needed!
6 0
3 years ago
What is the answer of 9.34-3.029=
Shalnov [3]
In case the user wants to see workings. These problems can easily be solved on a calculator, but can we work them out in our heads? ;)

9.34-3.029

=9.340-3.029

=9.340-3.000-0.029

=6.340-0.029

=6.311
8 0
4 years ago
A psychologist wants to estimate the proportion of people in a population with IQ scores between 80 and 140. The IQ scores of th
ryzh [129]

Using the Empirical Rule, it is found that the proportion of people in a population with IQ scores between 80 and 140 is of 0.95 = 95%.

<h3>What does the Empirical Rule state?</h3>

It states that, for a normally distributed random variable:

  • Approximately 68% of the measures are within 1 standard deviation of the mean.
  • Approximately 95% of the measures are within 2 standard deviations of  the mean.
  • Approximately 99.7% of the measures are within 3 standard deviations of the mean.

Considering the mean of 110 and the standard deviation of 15, we have that:

  • 80 = 110 - 2 x 15.
  • 140 = 110 + 2 x 15.

These values are both the most extreme within 2 standard deviations of the mean, hence the proportion of people in a population with IQ scores between 80 and 140 is of 0.95 = 95%.

More can be learned about the Empirical Rule at brainly.com/question/24537145

#SPJ1

7 0
2 years ago
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