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butalik [34]
3 years ago
13

If f:X is 3x + b and ff(2) = 12, find the value of b​

Mathematics
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

b =6

Step-by-step explanation:

Given

f(x) =3x + b

f(2) = 12

Required

Find b

f(2) = 12 implies that:

12 = 3 * 2 + b

12 = 6 + b

Collect like terms

b = 12 - 6

b =6

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7 0
3 years ago
PLEASE HELP!! Dee bought 6 dolls and 2 toy trains for $55. At the same prices, Joy bought 4 dolls and 7 toy trains for $65. What
GuDViN [60]

Answer:

The cost of 1 doll   =  $ 7.5

and The  Cost of 1 toy train =   $ 5

Step-by-step explanation:

Let the price of 1 doll  = $ x

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Now, according to the question:

6 x + 2 y  = $ 55

and  4 x   + 7 y = $ 65

Solving the given system of equation,

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x= \frac{55 - 2y}{6}

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or, solving for y , we get

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5 0
3 years ago
A circle has a diameter of 12 feet. What is the circumference of the circle?
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Answer:

B). 37.68 feet.

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Circumference = diameter *  π

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3 years ago
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Sloan [31]

Answer:

y ≤ 3x- 1

Step-by-step explanation:

The line is solid, so your answer must have a ≤ or ≥ symbol. And the area below the line is shaded so you would also know you answer must have a ≤ or < symbol.

8 0
2 years ago
Read 2 more answers
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