Answer:
she spent $7.45 on each rope at the sale price. The original price would have been $8.70
Step-by-step explanation:
Answer:
+ 1) is an even number.
Take any n ∈ N, then n is either even or odd.
• Suppose n is even ⇒ n = 2m for some m ⇒ n(n + 1) = 2m(n + 1) ⇒ n(n + 1) is even.
• Suppose n is odd ⇒ n+ 1 is even ⇒ n+ 1 = 2m for some m ⇒ n(n+ 1) = 2nm ⇒ n(n+ 1)
is even. QED
2. The sum of the first n natural num
Step-by-step explanation:
a>50A is greater than 50
a<50a<50
a≥50A is greater than or equal to 50
a≤50
I need help with this too haha I can't find it anywhere
Answer: 5%
Step-by-step explanation:
Hi to answer this question, first we have to calculate the discount amount:
Original price - sale price
500-475 =25
Now, the original price (500) multiplied by the percent discount in decimal form (x) must be equal to the discount amount (25)
500x =25
Solving for x
x =25/500 =0.05
Multiply it by 100 to express in percentage form.
0.05 x 100 = 5%
Feel free to ask for more if needed or if you did not understand something.
Answer:
63.59 in²
Step-by-step explanation:
The formula to find the area of a square: a², where a is the side.
The formula to find the area of a circle: πr², where r is the radius (diameter ÷ 2), and the pi is alterable (3.14 or 3.142 or 22/7).
1) Find the diameter of the circle. The side of a square is the diameter.
a²
a = √81
a = 9
2) Plug the values into the formula of the area of a circle. 9 ÷ 2 = 4.5 (radius).
= 3.14 x 4.5²
= 3.14 x 20.25
= 63.585
3) Round off the result to the nearest hundredth.
= 63.59
