Answer:
x = 7
Step-by-step explanation:
3x = 21
3x/3 = 21/3
x = 7
Let x be the age of the teacher.
We know that 7x is a three digit number.
Writing 6 after this number means to multiply this number by 10 (this adds a zero after the number) and then add 6.
So, we actually only need the last information:
Solving this equation is quite trivial: subtract 7x and 6 from both sides and you get
This is indeed a two digit number, and if you multiply it by 6 it becomes 174, a three digits number.
Answer:
13x2
Step-by-step explanation:
Answer:
three angles of a polygon are each 105.5,the sum of the angles in the polygon is 2520. find each of the other angles if they are equal to each other. For a polygon with n sides and n angles, the sum of the measures of all the interior angles equals (n-2)180 degrees. 16-3=13
Answer:
Discount of $12.50.
Sale price is $37.50.
Step-by-step explanation:
Since the dress is "Marked save 25%" this means yuo pay 75% of the $50 price. Remember, 100-25 = 75. This means you pay 0.75*50 = $37.50 and yuo got a discount of $12.50.
$50 - 37.50 = 12.50
