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DIA [1.3K]
2 years ago
14

What is the solution to this system of linear equations?

Mathematics
2 answers:
kvasek [131]2 years ago
7 0

Answer:

The correct answer is D. (-1,3)

QveST [7]2 years ago
7 0

Answer:

The answer would be D (-1, 3)

You might be interested in
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
Brenda is planning her birthday party. She wants to have 10.82 liters of punch, 6.5 gallons of ice cream 3.9 pounds of fudge and
faltersainse [42]

The answer is 0.4328 liters hope this helped!


6 0
2 years ago
Ana’s age is 8 years less than 4 times her sister’s age.
allsm [11]
(5•4)-8 the answer is 12 because 5 times 4 is 20. Then 20 minus 8 is 12.
6 0
3 years ago
What are the slope and the y-intercept of the linear function that is represented by the equation y=-10x+1?
Alenkasestr [34]
Linear functions can be written in the form y=mx+b, where:
y is a y coordinate on the line
m is the slope of the line
x is the x coordinate on the line that corresponds with the y coordinate in the equation
b is the y-intercept of the line

So for the equation y=-10x+1:
m=-10 and b=1 so the slope of the line is -10, and the y-intercept is 1. Your answer is B.
5 0
2 years ago
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How can 52/9 be expressed as a decimal? <br><br>  <br>  <br>  <br>  
slava [35]
The answer would be about 5.8
4 0
3 years ago
Read 2 more answers
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