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Irina-Kira [14]
3 years ago
13

Which system of linear inequalities is represented by the graph?

Mathematics
2 answers:
Aloiza [94]3 years ago
6 0
The blue line has a slope of 2 and a y-intercept of +4. Its equation is
  y = 2x +4
The shaded area is above the line, so it is the boundary of the inequality
  y ≥ 2x + 4

The red dashed line has a slope of -1/3 and a y-intercept of 2. Its equation is
  y = -1/3x + 2
The shaded area is above the line, so it is the boundary of the inequality
  y > -1/3x + 2
or
  x +3y > 6

The graph seems to represent the inequalities
  x +3y > 6 and y ≥ 2x +4
Rom4ik [11]3 years ago
3 0

Answer:

So the answer is D

Step-by-step explanation:


You might be interested in
Seventy-two percent of the light aircraft that disappear while in flight in a certain country are subsequently discovered. Of th
Anton [14]

Answer:

a) 0.105 = 10.5% probability that it will not be discovered if it has an emergency locator.

b) 0.522 = 52.2% probability that it will be discovered if it does not have an emergency locator.

c) 0.064 = 6.4% probability that 7 of them are discovered.

Step-by-step explanation:

For itens a and b, we use conditional probability.

For item c, we use the binomial distribution along with the conditional probability.

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

a) If it has an emergency locator, what is the probability that it will not be discovered?

Event A: Has an emergency locator

Event B: Not located.

Probability of having an emergency locator:

66% of 72%(Are discovered).

20% of 100 - 72 = 28%(not discovered). So

P(A) = 0.66*0.72 + 0.2*0.28 = 0.5312

Probability of having an emergency locator and not being discovered:

20% of 28%. So

P(A cap B) = 0.2*0.28 = 0.056

Probability:

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.056}{0.5312} = 0.105

0.105 = 10.5% probability that it will not be discovered if it has an emergency locator.

b) If it does not have an emergency locator, what is the probability that it will be discovered?

Probability of not having an emergency locator:

0.5312 of having. So

P(A) = 1 - 0.5312 = 0.4688

Probability of not having an emergency locator and being discovered:

34% of 72%. So

P(A \cap B) = 0.34*0.72 = 0.2448

Probability:

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.2448}{0.4688} = 0.522

0.522 = 52.2% probability that it will be discovered if it does not have an emergency locator.

c) If we consider 10 light aircraft that disappeared in flight with an emergency recorder, what is the probability that 7 of them are discovered?

p is the probability of being discovered with the emergency recorder:

0.5312 probability of having the emergency recorder.

Probability of having the emergency recorder and being located:

66% of 72%. So

P(A \cap B) = 0.66*0.72 = 0.4752

Probability of being discovered, given that it has the emergency recorder:

p = P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.4752}{0.5312} = 0.8946

This question asks for P(X = 7) when n = 10. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 7) = C_{10,7}.(0.8946)^{7}.(0.1054)^{3} = 0.064

0.064 = 6.4% probability that 7 of them are discovered.

8 0
3 years ago
It costs $23.50 to enter an amusement park and $0.25 to ride a ride. You have $24. Write an equation that represents the number
wlad13 [49]
The equation is 24=23.50+0.25r
8 0
3 years ago
Solve for y.<br> 22mm+15mm+(4y+12)mm=180 degrees
AURORKA [14]

Answer:

y =  45/m^2  −  49/4

Isolate the variable by dividing each side by factors that don't contain the variable

3 0
3 years ago
N+5/16=-1<br><br> Solve for n<br><br><br> I will reward Brainliest
Wittaler [7]

Answer:

Step-by-step explanation:

+

5

1

6

=

−

1

n+\frac{5}{16}=-1

n+165​=−1

Solve

1

Subtract

5

1

6

\frac{5}{16}

165​

from both sides of the equation

+

5

1

6

=

−

1

n+\frac{5}{16}=-1

n+165​=−1

+

5

1

6

−

5

1

6

=

−

1

−

5

1

6

n+\frac{5}{16}{\color{#c92786}{-\frac{5}{16}}}=-1{\color{#c92786}{-\frac{5}{16}}}

n+165​−165​=−1−165​

2

Simplify

Solution

=

−

2

1

3 0
3 years ago
PLEASE HELP!! WILL GIVE BRAINLIST!!!! Is the binomial a factor of the polynomial function? f(x)=x^3+4x^2−25x−100 Select Yes or N
pochemuha

Answer:

See below

Step-by-step explanation:

y = x^2 (x + 4) - 25(x + 4)

y = (x + 4)(x^2 - 25)

y = (x + 4)(x + 5)(x - 5)

  • x - 5 is a yes
  • x + 2 is a no
  • x - 4 is a no
4 0
2 years ago
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