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nika2105 [10]
3 years ago
9

PLEASE HELP WITH THE QUESTION BELOW ASAP!! THANKS SO MUCH!

Mathematics
1 answer:
Lilit [14]3 years ago
3 0

Answer:

y = 6x - 40

Step-by-step explanation:

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7) 5x – 3y – 4z = 24<br> 5x + 3y + 5z = 27<br> 4x - 3y + 5z = 28
OLEGan [10]

Answer:

Step-by-step explanation:

8 0
3 years ago
This is Mathematics 800
Lena [83]

Answer:

It is possible to get all 8 in one go. However, it is very unlikely because...

Step-by-step explanation:

You have a 1/8 chance of getting the dinosaur you want from a box. That means obviously you are significantly more likely to get another less dinosaur. Which it likely won't have lasers and stuff. Which is always sad.

The theoretical probability is far less likely to actually happen than the experimental probability.

8 0
3 years ago
Question 4 (20 points)
Blababa [14]

Answer:

The answer is C 128 cm3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The lifetime of a certain type of TV tube has a normal distribution with a mean of 61 and a standard deviation of 6 months. What
Ad libitum [116K]

Answer:

P(57

P(-0.67

P(-0.67

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

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

X \sim N(61,6)  

Where \mu=61 and \sigma=6

We are interested on this probability

P(57

And the best way to solve this problem is using the normal standard distribution and the z score given by:

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

If we apply this formula to our probability we got this:

P(57

And we can find this probability like this:

P(-0.67

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-0.67

6 0
3 years ago
Which is true?<br><br>3+2=4+1 <br><br>1+2=3+3<br><br>0+3=3+1​
julsineya [31]

3 + 2 = 4 + 1 is true

1 +2 = 3 + 3 and 0 + 3 = 3+1 is not true

7 0
3 years ago
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