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3 years ago

What is a linear system?

Mathematics

2 answers:

Darya [45]3 years ago

8 0

Answer:

Linear systems are systems of equations in which the variables are never multiplied with each other but only with constants and then summed up

Darya [45]3 years ago

4 0

Answer:

$\huge \underline\bold\red{Answer}$

Step-by-step explanation:✏ Linear systems are systems of equations in which the variables are never multiplied with each other but only with constants and then summed up.

For example, the propagation medium for wireless communication systems can often be modeled by linear systems...!

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End of semester test Chemistry A ... help please

noname [10]

Answer:

1. meter

2. kilogram

3. second :D

3 0

3 years ago

A system of linear equations is given by the tables.

almond37 [142]

Answer:

-1

x=4,y=11 (same in both equations)

5 0

3 years ago

A castle has to be guarded 24 hours a day. 7 nights are ordered to split each day guard duty equally. How long will each night s

melamori03 [73]

Answer:

3.43 hours

Step-by-step explanation:

A castle has to be guarded 24 hours a day. 7 knights are ordered to split each day guard duty equally. How long will each knight spend on guard duty in one day?

From the above question:

7 knights = 24 hours

1 knight = x hours

Cross Multiply

7 knights × x hours = 1 knight × 24 hours

x hours = 1 knight × 24 hours/ 7 knights

x hours = 3.4285714286 hours

Approximately = 3.43 hours

Therefore, each knight would spend 3.43 hours on guard duty in one day

5 0

3 years ago

Question about a rational expression

sesenic [268]

-9=6/v

You have to multiply v both sides because
6/v x v = 6 and helps you get rid of the v on the right side.
If you multiply by 6, 6/v x 6 = 36/v, that’s why it don’t work.

Answer:
-9=6/v
-9v=6
v=-6/9
v=-2/3

3 0

2 years ago

According to a survey, the average American person watches TV for 3 hours per week. To test if the amount of TV in New York City

Neporo4naja [7]

Answer:

Test statistic (t-value) of this one-mean hypothesis test is -2.422.

Step-by-step explanation:

We are given that according to a survey, the average American person watches TV for 3 hours per week. She surveys 19 New Yorkers randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 2.5 hours per week, and the sample standard deviation (s) is 0.9 hours.

We have to test if the amount of TV in New York City is less than the national average.

Let Null Hypothesis, $H_0$ : $\mu$ $\leq$ 3 {means that the amount of TV in New York City is less than the national average}

Alternate Hypothesis, $H_1$ : $\mu$ > 3 {means that the amount of TV in New York City is more than the national average}

The test statistics that will be used here is One-sample t-test statistics;

T.S. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean time = 2.5 hours per week

$s$ = sample standard deviation = 0.09 hours

n = sample size = 19

So, <u>test statistics</u> = $\frac{2.5 - 3}{\frac{0.9}{\sqrt{19} } }$ ~ $t_1_8$

= -2.422

Therefore, the test statistic (t-value) of this one-mean hypothesis test (with σ unknown) is -2.422.

8 0

4 years ago