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vlabodo [156]
3 years ago
8

What is the range of f(x) = 3/4x – 4?

Mathematics
1 answer:
Readme [11.4K]3 years ago
6 0

Answer:

(-∞, ∞).

Step-by-step explanation:

This function can have any real value.

Range = (-∞, ∞).

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Pls pls pls pls pls help​
Arturiano [62]

Answer:

y=\frac{1}{2}

Step-by-step explanation:

4(y+1)= \frac{3}{1-y}

4y+4= \frac{3}{1-y}

(4y+4)(1-y)= 3

4y(1-y)+4(1-y)=3

4y-4y^{2} +4-4y=3

-4y^{2}=3-4

4y^{2}=1

y^{2} = \frac{1}{4}

y=\sqrt{\frac{1}{4} }

y=\frac{1}{2}

7 0
2 years ago
Plz help with this word problem
s344n2d4d5 [400]
Well, this problem is best solved by setting up a system of two linear equations.

A linear equation can be defined 
y=mx+b
where 
b=initial value (when x=0), and
m=rate of increase or decrease.

In the given example, the x-axis represents hour, and the y-axis, number of cells.

Chemical #1 
initial value = b = 12000 cells
rate = m = -4000 / hr
The equation is therefore 
y1=-4000x+12000......................(1)

Similarly, for chemical #2
initial value = b = 6000 cells
rate = m = -3000 / hr
The equation is therefore
y2=-3000x+6000 .......................(2)

The time the two will have an equal sized colony would represent the solution of the system of equations (1) and (2), i.e. when  y1=y2
which means
-4000x+12000 = -3000x+6000
transpose and solve for x
4000x-3000x = 12000-6000
1000x=6000
x=6 hours.

At 6 hours from the start, 
y=-4000x+12000 = -4000*6+12000 = -24000+12000 = -12000 cells

So the solution is x=6, y=-12000, or (6,-12000)

Physical interpretation
Since cells cannot have a negative number, the two are actually equal before six hours, when they are both zero.
Case 1: y=0 when x=3
Case 2: y=0 when x=2

Therefore, after three hours, both trials will have zero cells.

You have to judge whether to give the mathematical solution (x=6,y=-12000) or the physical interpretation (x=3, y=0) as the answer.


6 0
3 years ago
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Pls help. I am not very smart!
Yanka [14]

Answer:

Umm I'm not entirely sure but I think its the last one

8 0
3 years ago
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ASAP PLZZZ
kari74 [83]
Is there a photo? I know the last option is true but I feel like there should be a photo with this
6 0
3 years ago
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Find area and circumference of the circle (12.) pls NO links
xxTIMURxx [149]

Answer:

The area is 452.39

The Circumference is 75.36

Step-by-step explanation:

5 0
3 years ago
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