ANSWER IT PLZ! Evaluate the expression 4² + 6 · 5² - 3³ ÷ 3² = ?
2 answers:
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Answer:
20 fence posts.
Step-by-step explanation:
Calvin is building a fence. The fence will enclose a 100 square foot area, 10 ft wide by 10 ft long. Calvin can put fence posts 2 feet apart.
Now, if he puts a fence post at each corner of the building, then considering each length of the building there will be posts along each length.
Now, considering each width of the building there will be posts (excluding the corner posts) along each width.
Therefore, in total there will be (6 + 6 + 4 + 4) = 20 fence post in the total fence. (Answer)
Answer:
Step-by-step explanation:
The total number of sums (not distinct) is , because we're removing without replacement.
Count the sums that fit the stipulation (sum 5):
There are 8 sums that work. Therefore, the desired answer is