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morpeh [17]
3 years ago
6

Without graphing is the system independent, dependent, or inconsistent?

Mathematics
1 answer:
rewona [7]3 years ago
3 0
Y = -2 x - 9
3 x - 4(-2 x - 9 ) = -8
3 x + 8 x + 36 = - 8
11 x = - 44,   x = - 4 
y = 8 - 9 ,      y = -1
This is a unique solution, the system is independent.    
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Use DeMorgan's laws to write a negation for the statement "the Hulk is green or the Iron Man is red"
erastova [34]

Answer:

"The Hulk is not green AND the Iron Man is not red"

Step-by-step explanation:

DeMorgan's laws state that the negation of an statement whose structure is "p OR q" is "not p AND not q", and similarly, that the negation of an statement whose structure is "p AND q" is "not p OR not q". The statement we want to negate in our case is "The Hulk is green OR the Iron Man is red". This is an statement whose structure is of the type "p OR q", where p would be "The Hulk is green", and q would be "the Iron Man is red". So according to DeMorgan's laws, its negation should be the statement "not p AND not q". To put them in common english, not p would be "The Hulk is NOT green", and not q would be "The Iron Man is NOT red". So the statement "not p AND not q" is simply "The Hulk is not green AND the Iron Man is not red".

7 0
3 years ago
On an airplane,there are two seats on the left in each row and three on the right side.There are 90 seats on the right side of t
Oksana_A [137]

Answer:

A) 60

B) 150

Step-by-step explanation:

5 0
3 years ago
Suppose a constellation of stars is plotted on a coordinate plane. The coordinates of the first star are (-2, 4). The second sta
miss Akunina [59]

Answer:

A. (-2,0)

Step-by-step explanation:

When plotting on a coordinate plane you always "run before you jump" so you would have the -2 stay because down would be the jumping portion and in this you would be falling down 4 and it is four so it would turn into zero.

Sorry I don't really know how to explain this

8 0
3 years ago
Read 2 more answers
(u+5)(u-6) Multiply and simplify​
dsp73

Answer: u^2 - u - 30

Step-by-step explanation:

3 0
2 years ago
The following data are the daily number of minutes of smartphone use for a random sample of 8 students at your institution:
Nadya [2.5K]

Answer:

We fail to reject the Null ;

(88.323, 130.677)

Step-by-step explanation:

Given the data :

117, 156, 89, 72, 116, 125, 101, 100

H0 : μ ≥ 100

H1: μ < 100

From the data: using calculator :

Mean, x = 109.5

Standard deviation, s = 25.33

The test statistic:

(x - μ) ÷ s/Sqrt(n)

(109.5 - 100) ÷ 25.33/sqrt(8)

Test statistic = 1.06

Since, same size is small, we use t test ;

Using the Pvalue calculator :

T at df = 8 - 1 = 7, α = 0.05

Pvalue = 0.161

Pvalue > α

0.161 > 0.05 ; Hence, we fail to reject H0.

B.)

C. I = mean ± Tcritical *s/√n

Tcritical = 2.365 at 95% and df = 7

109.5 ± 2.365(25.3264/√8)

109.5 ± 2.365(8.9542)

(109.5-21.1768 ; 109.5+21.1768)

(88.323, 130.677)

In conclusion true mean is in the confidence interval, so it is consistent.

8 0
2 years ago
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