Answer:
$28.77
Step-by-step explanation:
What you do is the coupon for 10% off first which equaled 2.997, but you have to round to $3.00.
You minus 3*9.99 which equals $29.97 and $3.00 to get $26.97.
You then times $29.97 by 6% to get 1.80.
You then add it to $26.97.
You get $28.77.
Answer:
Area = (36π - 12πx + x²π) mm²
Step-by-step explanation:
Given that,
radius of lense = 6mm
Length from outer layer of pupil to lense = x mm
Radius of pupil = 6 - x mm
<h3>
Formula to calculate area of pupil</h3><h3>
Area = π r²</h3>
<em> where r is radius of pupil</em>
Area = π (6 -x)²
Area = π (6² -2(6)(x) + x²)
Area = π (36 -12x +x²)
Area = (36π - 12πx + x²π) mm²
So, the polynomial in standard form that represent the area of pupil in terms of π = (36π - 12πx + x²π) mm²
Answer:
x=3
Step-by-step explanation:
Since this is an isosceles trapezoid
The angles at the top have to equal each other
112 = 30x + 11y
The sides also have to equal each other.
12 = 2x+3y
Divide each side by 3
12/3 = 2x/3 + 3y/3
4 = 2/3 x +y
Subtract 2/3 x from each side
4 -2/3 x =y
Substitute this into the first equation
112 = 30x + 11y
112 = 30x +11(4-2/3x)
112 = 30x +44 -22/3 x
Subtract 44 from each side
112-44 = 30x +44-44 -22/3 x
68 = 30x -22/3 x
Get a common denominator on the right of 3
68 = 90/3x -22/3 x
68 = 68/3 x
Multiply each side by 3/68
68 * 3/68 = 68/3 * 3/68 x
3 =x
Answer:
Read the explanation
Step-by-step explanation:
Equation:
= 3 + d = 81
= 3 + d - 3 = 81 - 3
d = 78
How many days:
78 days
Answer:
= $18.90
Step-by-step explanation:
First, find how much it will cost for the small packages:
2.30(7)
= 16.1
Then, find how much it will cost for the large one:
2.80(1)
= 2.80
Add it up:
16.1 + 2.8 = 18.9
= $18.90
