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Anni [7]
2 years ago
14

Decide if the expressions in each pair are equivalent. Explain how you know.

Mathematics
2 answers:
lilavasa [31]2 years ago
7 0

Answer:

x + x + x + x is the same as 4x

because its "x four times"

5x and x+5 are not the same because x+5 in not "x five times"

5x is 5 multiplied by x.

x + 5 is 5 added to x.

Lera25 [3.4K]2 years ago
5 0

Answer:

1) 4x and x+x+x+x are equal

2) 5x and x + 5 are not equal

Step-by-step explanation:

1) 4x is essentially 4 x , which is x + x + x + x

2) 5x is equal to 5 x , not x + 5

Hope this helps. If you have any questions, let me know.

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zzz [600]

Answer:

Step-by-step explanation:

MATHHHHHHHH do u need help in math or what?

5 0
2 years ago
Read 2 more answers
Which equation is equivalent to (1/3)^x=27^x+2?
ruslelena [56]
Ok so the answer is D because first I solved the equation because you can’t find which answer choice it is equivalent to if you didn’t solve it ... so I solved the equation and got x=-3/2 how I solved this is

3^-x = 3^3x+6 ... since the bases are the same, set the exponents equal
-x=3x+6..... move the variable to the left-hand side and change its side
-x-3x=6 ... collect like terms
-4x = 6..... divide both sides of the equation by -4 and I got x=-3/2
I don’t want this text to be that long so they both seem calculated the same way that’s why i got -3/2 hope that helps;-;
6 0
3 years ago
If sin (x-3)° = cos (2x + 6)°, then what is the value of x?
Travka [436]

Answer:

if sin (x-3) degrees = cos (2x+6) degrees, find the value of x.

----------

Note: sin and cos are complementary functions....

sin(x) = cos (90-x)

-------------------

Your Problem:

sin(x-3) = cos(90-(x-3))

Equation:

90-[x-3] = 2x+6

90-x+3 = 2x+6

3x = 93-6

x = 31-2

x = 29

Step-by-step explanation:

6 0
3 years ago
Choose the correct simplification of the expression (a^2/ b^3)^4.
anastassius [24]
(a^2)^4 = a^8, and (b^3)^4 = b^12.  Thus, the quotient is

 a^8
--------
 b^12
4 0
3 years ago
Evaluate a−b+3c when .a=4, b=−2, and c=3. a−b+3c =4−( )+3∙ =4+ + =
igomit [66]

Answer:

15

Step-by-step explanation:

4-(-2)+3(3)

4+2+9

15

5 0
3 years ago
Read 2 more answers
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