Answer:
Step-by-step explanation:
becauseby pytagorean theorem we get
16+81=c squared
97 =c squared
c=radical 97
<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>
Answer:
<h2>Add up all the digits</h2><h2 /><h2>4+5+6=15</h2><h2 /><h2>The sum of the digits must be equal to 9 so,</h2><h2 /><h2>15=9</h2><h2 /><h2>15–9=0</h2><h2 /><h2>So,it is equal to 6.If we subtract 6 from 456 i.e.,</h2><h2 /><h2>=456–6</h2><h2 /><h2>=450</h2><h2 /><h2>Which is divisible by 9 so,the answer is 6.But if we subtract any digit less than 6 it will not be divisible by 9.</h2>
Step-by-step explanation:
<h2>
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28ft, 4ftx10ft. 2 4ft edges and 2 10ft edges. (2x4) + (2x10)= 28 ft
