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3 years ago

4) Which ordered pair is a solution to the linear inequality below? y 2 - 2x + 7

Mathematics

1 answer:

nata0808 [166]3 years ago

6 0

Answer:

(0,9), (1,7), and (2,5)

Step-by-step explanation:

i found three tell me if theyre wrong

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A line's y-intercept is 3, and its slope is 1.

8090 [49]

Answer:

Standard form for straight line

y = m x + b

If x = 0 then y = b = 3

y = m x + 3

Since m is the slope the requested equation is y = x + 3

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3 years ago

Tina babysat eight times. She earned $15, $20, $10, $12, $20, $16, $80, and $18. What is the average amount of money she made?

AleksAgata [21]

The mean is 23.875. That would be roughly $24 each time

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2 years ago

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The wait time for your local pizzeria to deliver food is normally distributed with µ = 40 minutes and σ = 3.5. What is the proba

Scilla [17]

Answer:

2.28%

Step-by-step explanation:

Given that:

µ = 40 minutes ; σ = 3.5.

x = > 47 minutes

Obtain the standardized score, Z

Zscore = (x - μ) / σ

P(x > 47) = (47 - 40) / 3.5

P(x > 47) = 7 / 3.5

P(x > 47) = 2

P(z > 2) = 0.02275

Hence, Probability that next pizza delivery takes over 47 minutes is 0.02275 = 2.275% = 2.28%

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2 years ago

Translate this sentence into an equation. 99 is the product of Chrissy's age and 9 Use the variable c to represent Chrissy's age

Lana71 [14]

Answer:

$9c=99\\$

Step-by-step explanation:

Product means multipulcation

So it must be 9c = 99

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3 years ago

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There are 13 animals in a barn. Some are Chickens and some are Pigs. Altogether

konstantin123 [22]

Answer:

Ahh! What a classic: Systems of Equations!

So, if you don't know what a system of equations is, its basically two equations with two variables combined into a system.

So, let x=# of pigs

And also, Let y=# of chickens

Let's make our first equation!

$13=x+y$

This is because there are 13 animals in a barn.

So then, knowing that a pig has 4 legs and a chicken 2:

$40=4x+2y$

This is because there are 40 legs in total, and we multiply the variable because that's how many legs each creature has.

So, here is our system!

$\left \{ {{x+y=13} \atop {4x+2y=40}} \right.$

Through Substitution (the inputting of something instead of a variable):

$x+y=13\\x=13-y$

Then, we input it into the next equation:

$4(13-y)+2y=40\\52-4y+2y=40\\-2y=-12\\y=6$

This means that there are 6 chickens, and by inputting it into the first equation:

$x+6=13\\x=7$

So there you have it!

FYI there are 6 chickens and 7 pigs.

Hope this helps!

P.S. Stay Safe!

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3 years ago

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