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3 years ago

Please help this is timed! I’ll give brainliest.

Mathematics

1 answer:

Alex17521 [72]3 years ago

6 0

Answer:

1. Function 1

2. Function 3

3. Function 2, Function 3, and Function 4

Step-by-step explanation:

I did this for someone else and it took me a long time to explain, so here's the answers since this is timed.

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Graph the solution to the inequality 2x-3y<18

frutty [35]

<, > - dotted line

≤, ≥ - solid line

$2x-3y\dfrac{2}{3}x-6\\\\y=\dfrac{2}{3}x-6-\text{It's a linear function}\\\\for\ x=0\to y=\dfrac{2}{3}(0)-6=0-6=-6\to(0;\ -6)\\\\for\ x=6\to y=\dfrac{2}{3}(6)-6=2(2)-6=4-6=-2\to(6;\ -2)$

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3 years ago

Twenty-four Million one hundred ninety-none thousand nine hundred seventy four, when rounded off to the nearest thousand place i

adelina 88 [10]

Answer:

Round Off :

1 ) 24,199,974

=>24,200,000

7 0

2 years ago

Read 2 more answers

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Aleksandr [31]

Answer:

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Step-by-step explanation:

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3 years ago

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Please help me. give 10 points<br><br><br>

icang [17]

Answer:

x intercept: (3, 0), (7, 0)

y-intercept: (0, -21)

vertex : (5,4)

the graph points down

Step-by-step explanation:

f(x) = - (x - 3)(x - 7)

f(x) = - (x^2 - 7x - 3x + 21)

f(x) = - (x^2 - 10x + 21)

f(x) = -x^2 + 10x - 21

x-intercept when f(x) = 0 so

x - 3 = 0; x = 3

x - 7 = 0; x = 7

x intercept: (3, 0), (7, 0)

y-intercept when x = 0 so y = -21

y-intercept: (0, -21)

vertex:

x = -b/2a

x = -10/ 2(-1)

x = 5

plug in x = 5 into the equation to find y

y = -(5)^2 + 10(5) - 21

y = -25 + 50 - 21

y = 4

so vertex : (5,4)

Since a = - 1<0, the graph is going downward and has maximum

4 0

3 years ago

Give a rule of the piecewise-defined function. Give the domain and the range.

dimulka [17.4K]

Answer:

Hello your question is incomplete below is the complete question

option B is correct

f(x) = 1 if x ≤ 0

-2 if x > 0

Step-by-step explanation:

The Rule of the piece-wise-defined function is :

from the given figure attached it can be seen that as : x ≤ 0 , y = 1

while for x > 0 , y = -2

therefore option B is correct

f(x) = 1 if x ≤ 0

-2 if x > 0

3 0

3 years ago