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3 years ago

How do you figure out what type of solution it is when their are 2 ordered pairs

Mathematics

1 answer:

iris [78.8K]3 years ago

4 0

Answer:

To figure out if an ordered pair is a solution to an equation, you could perform a test. Identify the x-value in the ordered pair and plug it into the equation. When you simplify, if the y-value you get is the same as the y-value in the ordered pair, then that ordered pair is indeed a solution to the equation.

Step-by-step explanation:

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Which of these must be true

Bingel [31]

B) Line HI and FI are congruent

because they are both the radius of the circles and their central angles are also congruent.

6 0

3 years ago

We want to factor the following expression: (x+7)^2+2y(x+7)+y^2 which patter can we use to factor the espression? U and V are ei

Lostsunrise [7]

Answer:

A. (U+V)^2 or (U-V)^2

Step-by-step explanation:

5 0

3 years ago

Find the ninth term of the

pantera1 [17]

Answer:

$a_{9}$ =0.00015241579

Step-by-step explanation:

Use the formula for geometric sequences:

$a_{n}$ = $a_{1}$ $r^{n-1}$

Substitute 1 in for $a_{1}$ , -1/3 in for r, and 9 in for n

$a_{9}$ =(1)(-1/3^9-1)

$a_{9}$ =(1)(-1/3^8)

$a_{9}$ =(1)(0.00015241579)

$a_{9}$ =0.00015241579

Hope this helps! :)

5 0

3 years ago

One option in a roulette game is to bet $12 on red. (There are 18 red compartments, 18 black compartments, and two compartmen

Alona [7]

Answer:

The expected value is -$0,63

Step-by-step explanation:

The expected value of a discrete variable x is given by:

E(x)=x1*p(x1)+x2*p(x2)+...+xn*p(xn)

Where x1, x2, .. xn are the posibles results that the variable x can take and p(x1), p(x2),...,P(xn) are their respective probabilities.

In this case, we have two possible results if we bet $12 on red. This results are:

1. The balls lands on red: in this case we keep the $12 we paid and we awarded 12. That means, we gain $12 and the probability of this case is the division of the number of red compartments by total number of compartments. So:

x1=$12

p(x1)=18/38

2. The balls doesn't land on red: in this case we lose the $12 that we bet and the probability is the division of number of compartments that aren't red by the total number of compartments. So:

x2=-$12

p(x2)=20/38

Then, replacing x1, x2, p(x1) and p(x2) on the equation of the expected value, we get:

E(x)=($12)*(18/38) + (-$12)*(20/38)

E(x)=$-0.63

So, the expected value if we bet $12 on red is to lose $0.63

5 0

4 years ago

The mean salary for a new teacher in your town is $48,000. You believe it is higher for new teachers in a neighboring town. Stat

nikklg [1K]

Answer:

Step-by-step explanation:

Given that the mean salary for a new teacher in your town is $48,000

You believe it is higher for new teachers in a neighboring town.

So to prove or disprove your claim you have to show statistical evidence.

For that hypothesis testing is necessary.

You must conduct a hypothesis test for comparing the mean of salary of new teacher with neighbouring places

The hypotheses wouldbe

$H_0: \mu = 48000\\H_1: \mu >48000$

where mu is the average for neighbouring states.

3 0

3 years ago