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2 answers:
Answer:
Option A.
Step-by-step explanation:
Anastasia worked for = 7 hours per day
Number of weeks she worked = 52 weeks
Number of hours she worked = 7×52
= 364 hours
Per hour earning of Anastasia = $20
Total earning of Anastasia = 364×20
= $7280
Let the monthly expenses of Anastasia = $x
Then total expenses = $12x
At the end of the year total saving = Total earning - Total expenses
= $7280 - 12x
Since she saved $2000 in a year therefore, expression that represents the savings will be
2000 = 7280 - 12x
12x = 7280 - 2000
12x = 5280
x =
x = $440
Option A will be the answer.
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Answer and Step-by-step explanation:
The sides we have are 7, , and
.
The square root of 80 is less than 9 but greater than 8 (because is 64,
is 81, and 80 is in between those two values), and the square root of 31 is definitely less than the square root of 80.
So, is the longest side.
1) The square of is:
2) The sum of the squares of the two shorter sides is:
3) Since the square of the longest side is equal to the sum of the squares of the two shorter sides, by the Pythagorean Theorem, the triangle is a right triangles.
Hope this helps!