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Alexandra [31]
3 years ago
9

A math class is having a discussion on how to determine if the expressions 4 x minus x + 5 and 8 minus 3 x minus 3 are equivalen

t using substitution. The class has suggested four different methods.
Mathematics
2 answers:
dedylja [7]3 years ago
5 0

Answer:

They are NOT equivalent

Step-by-step explanation:

4x-x+5 and 8-3x-3

<u>simplify</u>

3x+5 and 5x-3

NikAS [45]3 years ago
3 0
4x-x+5 = 8x-3x-3
4x - x = 3x
8x - 3x = 5x
5 = 2x-3
+3
8= 2x
x=4
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5
Snowcat [4.5K]
F(1) = 2
f(2) = 3f(1) = 3(2) = 6
f(3) = 3f(2) = 3(6) = 18 (A)
5 0
2 years ago
Read 2 more answers
Example 2:
Montano1993 [528]
Taking this example into account, we can see that setting the first value equal to 1, we obtain that F(x)=0.5x+1=4 and x=6. Using this information, we find that F(x+1)=0.5(x+1)+1=0.5(6+1)+1=4.5. It shows that when x is positive, the succussive terms are increasing.

Referring to that finding, if we set initial value less than zero, which means that we are solving 0.5x+1<0 and taking a number in the interval of the solution, which means x ∈ (- ∞, -20). Setting x=-19, we find that F(x)=0.5x+1=-19 and x=-40. In the next iteration, F(x+1)=0.5(x+1)+1=0.5(1-40)+1=-18.5. In the next iteration, F(x+2)=0.5(x+2)+1=0.5(2-40)+1=-18. By this way, we find that even if the initial value is less than zero, value of the successive iterations is increasing. 

Using the function g(x)=-x+2 and taking the initial value equal to 4, we find that g(x)=-x+2=4 and x=-2. In the next iteration, g(x+1)=-(x+1)+2=-(-2+1)+2=3. If we continue the iterations we'll see that they are decreasing.
Setting the initial value equal to 2, we find that g(x)=-x+2=2 and x=0. The next iteration is g(x+1)=-(x+1)+2=1. In this case, the interations are also decreasing. 
If we set the initial value equal to 1, we find that g(x)=-x+2=1 and x=1. In the next iteration, g(x+1)=-(x+1)+2=0 and the iterations are decreasing. 
8 0
3 years ago
Which fractions are equivalent to 2/8?
Hitman42 [59]

Answer:

1/4 and 3/12

Step-by-step explanation:


3 0
3 years ago
please help if you answer I will give you brainliest also you smart just please explain to me how you got the answer if you don'
EastWind [94]

Answer:

2.352

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A(n) = 1 + (n –1)(–5.7)
hammer [34]
Im guessing this is simplify so the answer would be 

<span><span>−<span>5.7n</span></span>+6.7</span><span>n
</span>__________
         n
6 0
3 years ago
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