Answer:
We have;
Hours (h), Total cost C
1, 5*1 + 10 = $15
2, 5*2 + 10 = $20
3, 5*3 + 10 = $25
4, 5*4 + 10 = $30
5, 5*5 + 10 = $35
Step-by-step explanation:
The given parameters are;
Kevin's fixed charge for lawn cutting = $10
Kevin's charge for lawn cutting per hour = $5
The total cost, C, for cutting lawn cutting by Kevin is C = 5h + 10
To solve this problem you must apply the proccedure shown below:
a) You must sum terms with same exponents, therefore, you have that the sum of these two polynomials is:
b) First, you must mulitply the signs of the second polynomial by the negative sign, and them, you apply an algebraic sum. Therefore, the result is:
The answers are: a); b)
Answer:
True, they form a proportion because their cross-multiplication products are equal.
Step-by-step explanation:
True or False?
If they are a proportion, the products you get from cross-multiplying are the same.
Multiply the left numerator by right denominator:
49 X 12 = 588
Multiply the left denominator by right numerator:
21 X 28 = 588
588 = 588
Therefore it is true, 49/21 and 28/12 form a proportion.