ANSWER:
-78-a
= -78-(-29)
= -78+29
= -49
<span>An algebraic expression is an expression constructed from a number of constants and variables utilizing algebraic operations. These algebraic operations are addition, subtraction, multiplication, division, and exponentiation. A constant is constant, so its value is unchanged. A variable changes based on the value provided. In the provided example, 2x-1, there are two constants, "2" and "1", and one variable "x." The algebraic operations utilized are multiplication and subtraction. In order to evaluate the value of the algebraic expression, the given value for the variable must be substituted for the variable x, and then the algebraic operations executed to obtain the answer.
For instance, if you were told that the value of x in this case was 2, then you would substitute the value 2 for x and perform the described operations. Remember to follow the order of operations when evaluating an algebraic expression!
2x-1 for x=2
2(2) - 1
4 - 1
3 is the answer.
Remember, even though the multiplication operation is not explicitly stated, it is implied that a constant attached to a variable (termed a coefficient) is multiplied with the value of the variable.</span>
Answer:
Step-by-step explanation:
see the attached figure to better understand the problem
step 1
In the right triangle ABC find the length side BC
we know that
step 2
In the right triangle ABD find the length side BD
we know that
step 3
we know that
The distance between the two boats is the length side CD
substitute the values
Answer:
C
Step-by-step explanation:
First, factor 
+3+2
Which equals (x+1)(x+2)
Then rewrite the expression with the common denominator
The fraction should now look like this
x+3(x+2)/(x+1)(x+2)
Now expand... you should have
x+3x+6/(x+1)(x+2)
Combine like terms and you get
4x+6/(x+1)(x+2)
Answer:
The slope would be 2.5
Step-by-step explanation:
Rise over run, pick 2 points 50/20= 2.5
