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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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timofeeve [1]
Hello I’m back oof.

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3.14•3^
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7 0
3 years ago
Determine if the given functions are even, odd or neither. f(x) = -2x2 - 7 and g(x) = 2x2 + 3
Anettt [7]
Answer:

It's odd.

Explanation:

A function is odd when <span><span>f<span>(−x)</span></span>=−<span>f<span>(x)</span></span></span>

<span><span>f<span>(−x)</span></span>=6<span><span>(−x)</span>3</span>−2<span>(−x)</span></span>

<span>=−6<span>x3</span>+2x</span>

<span>=−<span>(6<span>x3</span>−2x)</span></span>

<span>=−<span>f<span>(x)</span></span></span>

Thus, the function is odd.

If a function is odd, then it is symmetric over the x-axis.

3 0
4 years ago
PLS HELP ASAP, ILL MARK BRAINLIEST IF ITS A REAL ANSWER. LOOK AT THE PICTURE !
lozanna [386]

Answer:

No

Step-by-step explanation:

No because if it's 20,000 on 1 it should be 40,000 on 2 but its not so its not proportional

7 0
3 years ago
The graph below shows the velocity f(t) of a runner during a certain time interval: graph of line segment going through ordered
azamat
I believe the correct answer would be d
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3 years ago
The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?
Triss [41]

Answer:

x^2+ 18x -130=0

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

Area = Length * Width

So:

A_1 = (x + 6) * (3x - 2)

The smaller rectangle

A_2 = (x - 1) * (2x)

The difference between this areas give the area of the shaded region.

So:

A_1 - A_1 = 118

(x+6)*(3x-2) - (x-1)*2x = 118

Open brackets

3x^2 - 2x + 18x -12 -2x^2 +2x = 118

Collect like terms

3x^2 -2x^2- 2x +2x+ 18x -12   - 118=0

x^2+ 18x -130=0

<em>The above equation can be used to solve for x</em>

4 0
3 years ago
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