Answer:
-0.7
Step-by-step explanation:
3.2 - 1.8 = 1.4
-2 x -0.7 = 1.4
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This question is based on the concept of graphical method. Therefore, In 4 years, human years will both pets be the same age in their respective types of years.
Given:
Your dog is 16 years old in dog years.
Your cat is 28 years old in cat years.
For every human year, your dog ages by 7 dog years and your cat ages by 4 cat years.
Let x be the no. of human yrs.
We have to find x such that age is same for dog and cat in their respective year i.e.
16 + 7x = 28 + 4x
Write above equation as follows and solve it graphically,
y = 16 + 7x
y = 28 + 4x
From the graph, it is observe that. Attachment is below.
Point of intersection is (4, 44). Thus, solution of equation is x =4.
Now put the value x = 4 in equation 16 + 7x = 28 + 4x.
We get,
16 + 7(4) = 28 + 4(4)
44 = 44
Therefore, In 4 years, human years will both pets be the same age in their respective types of years.
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Answer: 615.44 because area of a circle=pi×radius^2