Answer:
A.-
D.
E.
Step-by-step explanation:
Like terms must have the same variable, in this case x, and the same exponent, in this case 2. Since the original term is
, the like terms will be those that contain
, regardless of whether their coefficient or sign is different.
Analyzing the options:
A.-
We have the same variable and the same exponent
, so it is a like term.
B. 
You have the same variable x but not the same exponent. So it's not a like term of 
C.
Same variable
but as in the previous case, the exponent is different, it is a 3 and it should be a 2, so it is not a similar or like term.
D.
In this option we do have the
, so it is a like term of 
E.
It is also a like term because it contains the
.
In summary the like terms are:
A.-
D.
E.
The solution of
is 
<em><u>Solution:</u></em>
Given that we have to find the solution of given expression
Given expression is:

Let us first convert the mixed fraction to improper fraction
Multiply the whole number part by the fraction's denominator.
Add that to the numerator.
Then write the result on top of the denominator.
Therefore,


Now the expression becomes,

Solve and simplify the above expression

In decimal form we get,

Thus the solution to given expression is found
Answer:
<u>There are 270 longs</u>
Step-by-step explanation:
<u>Equations</u>
We must write the problem into a mathematical model that allows us to apply the properties of basic algebra and solve for the variable which must be adequately set up.
We have three unknowns: the number of long blocks, flats blocks, and cubes. The conditions are given:
- There are three times as many longs as cubes
- There are 30 fewer flats than longs.
- There are 600 blocks in all
For the equation to be easier solved, let's set the variable as the number of cubes:
x = number of cubes
Considering the first condition, we have
3x = number of longs
3x-30 = number of flats
And finally:

Joining like terms:

Solving for x

Therefore, there are 3x = 3*(90) = 270 longs
Answer: there are 270 longs
X= -28
-2.5(-28) = 70
If you got this right, please make me Brainliest
the answer is C.
by the formula vertex (xv,yv) y=a(x-xv)²+yv