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adelina 88 [10]
2 years ago
6

Which function represents a reflection of f(x) =

Mathematics
1 answer:
liubo4ka [24]2 years ago
8 0

If your original equation was f(x) = 3(2)^x, then a reflection over the x-axis means you need all the y-values to switch sign.  This means you need to multiply that function by -1.

    g(x) = -1\cdot 3(2)^x or  g(x) = -3(2)^x

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The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b
zheka24 [161]

Answer:

E.  -8, -29

Step-by-step explanation:

a-b=21

5a -2b =18

Take the first equation and solve for a by adding b to each side

a-b=21

a-b+b=21+b

a = 21+b

Now substitute a=21+b into the second equation

5a -2b =18

5(21+b) -2b =18

Distribute the 5

105 +5b-2b =18

Combine like terms

105 +3b =18

Subtract 105 from each side

105-105 +3b = 18-105

3b = -87

Divide each side by 3

3b/3 =-87/3

b = -29

if b = -29, we can substitute it into a =21+b

a = 21-29

a = -8

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3 years ago
Crown me pls i have to keep writing pls just crown me
professor190 [17]
I’m confused , what do you mean?
4 0
3 years ago
Read 2 more answers
The graph of the equation y = 4x + 8 is shown. Which TWO statements are correct?
melisa1 [442]
B and e if you plug it in desmos it gives you direct coordinates
8 0
3 years ago
Find the value of the variable
erik [133]
X+1=y and 3y-7=2x are your two equations.

Substitute x+1 in for y
3(x+1)-7=2x
3x+3-7=2x
x-4=0
x=4

Plug in 4 for x in either equation to solve for y
x+1=y
4+1=y
5=y

x=4 and y=5

Hope I could help!
3 0
3 years ago
What is the probability of choosing a red chip from a bag containing 3 red, 2 blue, and 5 yellow chips?
Sholpan [36]
So first you have to add all of those together. So it would all add up to 10. Then you you take how many red chips (3) and put it on top of the fraction to say that there are 3 red chips in a bag of 10 (3/10) then if it has to be a percent, you divide it so 3 divided by 10 is 0.3. But then you move the decimal over 2 places to the right so it would be a 30% chance you would pull a red chip from the bag.
4 0
3 years ago
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