D is the answer. Hope this helps!
The Canadian goose flew for 4 hours and the Great blue heron flew for 10 hours
<h3>What is an equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Let a represent the time flown by the goose and b represent the time flown by the heron. Hence:
a + b = 14 (1)
Also:
20a + 10b = 180 (2)
From equation 1 and 2:
a = 4, b = 10
The Canadian goose flew for 4 hours and the Great blue heron flew for 10 hours
Find out more on equation at: brainly.com/question/2972832
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Answer:
-2
Step-by-step explanation:
essay with the title stolen
Using the sum (addition) and two 2-digit addends, 12 + 34 can be answered without regrouping.
Answer:10
Step-by-step explanation: 42/4 is 10.5, but don't round because, that wouldn't work for 4 into 42.