5(4x + 2) ÷ 7y
2 answers:
Consider the expression below:
1. Sum:
(4x+2) denotes the sum of '4x' and '2' in the given expression.
2. Product
7y and 5(4x+2) denotes the product in the given expression. '7y' denotes the product of '7' and 'y' whereas 5(4x+2) denotes the product of '5' and (4x+2).
3. Factor
Not present
4. Quotient
denotes the quotient in the given expression.
5. Coefficient
'20' is the coefficient of 'x' and '7' is the coefficient of 'y'.
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Answer:
PS=5.4
Step-by-step explanation:
The centroid divides each median in the ratio 2:1
If U is the centroid, then
We use ratio to obtain;
Cross multiply;
Expand;
Group similar terms;
x=1
PS=PU+US
PS=3.6+1+0.8
PS=3.6+1+0.8
PS=5.4
Answer:
101.1%
Step-by-step explanation:
The two batteries are in the shape of cylinder.
The total surface area of a cylinder
SA = (2πr^2 + 2πrh ) =
For AAA battery
h = 0.8mm
r = 1.9 mm
SA = (2π(1.9)^2 + 2π × 1.9 × 0.8 )
SA = 22.68 + 9.55
SA = 32.23 mm^2
For AA battery
h = 1 mm
r = 2.75 mm
SA = (2π(2.75)^2 + 2π×2.75× 1 )
SA = 47.52 + 17.28
SA = 64.80 mm^2
Increase in SA = 64.80 - 32.23
Increase in SA = 32.57
% increase = increase in SA/AAA × 100
% increase in SA = 32.57/32.23 × 100
% increase in SA = 101.1%
