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3 years ago

What is the value of f(-4)

Mathematics

1 answer:

maria [59]3 years ago

8 0

(-4) is the same as x, so looking the conditions that are the results for the function, you realize:

-2 is the result of the function to the values of X that are under -3: the result will be -2 if x < -3

x < -3 ; x = -4 ; -4 < -3 (it's true), in other words, -4 is less than -3, so f(-4) = -2

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bekas [8.4K]

Answer:

x=4, y=2

Step-by-step explanation:

2x - y = 6

x + y = 6

Add these together to eliminate y

2x - y = 6

x + y = 6

-----------------

3x = 12

Divide by 3

3x/3 = 12/3

x=4

But we still need y

x+y =6

4+y =6

Subtract 4 from each side

4+y-4 = 6-4

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3 years ago

Which compound inequality can be used to solve the inequality 3x+2>7

kipiarov [429]

Answer:

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2 years ago

Plz help me with this math and also explain

jasenka [17]

Step-by-step explanation:

SI = $250
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Time (t) = 4 years

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2/7 of the balls are red.
3/5 of the balls are blue.
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Let the total number of balls be x.

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$\longrightarrow \tt{ 1260= 4x} \\$

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$\longrightarrow \underline{\boxed{ \tt { 315 = x }}} \\$

Total number of balls is 315.

A/Q,

3/5 of the balls are blue.

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8 0

3 years ago

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Hunter-Best [27]

Answer:

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3 years ago

Mrs. Smith bought 4 dozen doughnuts and paid a total of $13.92. What was the cost of 1 doughout

polet [3.4K]

Answer:

A $0.29

Step-by-step explanation:

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5 0

3 years ago

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