Answer: 
Step-by-step explanation:
In addition of polynomials, you only have to add the like terms.
Remember the multiplication of signs:
Then, given the polynomial 
and the polynomial 
, you can find the sum of them by adding the like terms.
Observe the procedure below:
Therefore, the sum is:
Answer:
2 3/4
Step-by-step explanation:
Make 1/3 a reciprocal: 3/1 = 3 then turn the division symbol into a multiplication symbol the multiply and simplify.
Answer:
<u>The length of the building across the street is 250 feet</u>.
Step-by-step explanation:
These are the measurements of the real building:
Height = 50 feet
Width = 50 feet
Length = 50 feet
These are the measurements of the building across the street:
Height = We don't know
Width = 50 feet
Length = 50 * 5 = 250 feet
<u>The length of the building across the street is 250 feet</u>.
Answer:
0.000000049.
Step-by-step explanation:
This will have 7 zeros after the decimal point followed by 49:
4.9 × 10^–8 = 0.000000049.
If we imagine the decimal point making jumps to the right over the digits it takes 8 jumps till it gets to 4.9. that's where the -8 comes in.
5x^2 + 7
the coefficient is 5
the variable is x
the exponent is 2
the constant is 7
