Answer:
≈ 7.71 ft
Step-by-step explanation:
The perimeter is half the circumference (C) of the circle plus the diameter.
C = πd ( d is the diameter )
= 0.5 × π × 3 = 1.5π
Thus
perimeter = 1.5π + 3 ≈ 7.71 ft ( to the nearest hundredth )
if it's likely but not certain i would think it's c and if it's wrong i'm very sorry
Answer: x = 1, y = - 5
Step-by-step explanation:
The given system of linear equations is expressed as
x - 2y = 11- - - - - - - - - - - - -1
- x + 6y = - 31- - - - - - - - - - - -2
We would eliminate x by adding equation 1 to equation 2. It becomes
- 2y + 6y = 11 - 31
4y = - 20
Dividing the the left hand side and the right hand side of the equation by 4, it becomes
4y/4 = - 20/4
y = - 5
Substituting y = - 5 into equation 1, it becomes
x - 2 × - 5 = 11
x + 10 = 11
Subtracting 10 from the left hand side and the right hand side of the equation, it becomes
x + 10 - 10 = 11 - 10
x = 1
Let x = number of white marbles and y = number of yellow marbles.
x + y = 57 => x = 57 - y
Also, x = 3 + 5y
Substitute x for y.
57 - y = 3 + 5y => 57 - 3 = 54 = 6y
So, y = 9
Since x (our answer) = 3 + 5 (9),
x = 48.
Check: 48 + 9 = 57 total
30%25=7.5
25-7.5=17.5
So the original price of Harry's three T-shirts will be $17.50
