Factor:=
(x + 3)(x - 2) = 0
either x+3 = 0 or (x-2)=0
so x = -3 or 2
correct choice is C
81=81•2/2=162/2
81 1/2=162/2+1/2
=163/2
So 81 1/2=163/2=81.5
Answer:
28 square metres
Step-by-step explanation:
Calculate the total surface area of the glass covered part of the rectangular aquarium
Surface area = 2(4 × 2) + 2(3 × 2)
= 16 + 12
Protective film needed = 28 square metres
(Lets hope i'm right :p)
The first thing you do is make "34%" into a fraction. That would be 1/34.
After, you would multiply.
1/4 x 60000000/1 = ?
(Use cross multiply if you know)
60000000 divided by 4 = 15000000
1/1 x 15000000/1 = 15000000/1 OR 15000000
Answer: 15000000/1 or 15000000
<em>Tell me if i'm wrong so I can prevent this in the future! Have a lovely day!</em>
~Pooch ♥
Answer:
4cm
Step-by-step explanation:
Given data
L=(2x+3)
W=(x-1)
P=28cm
A= L*W
A= (2x+3)*(x-1)
open bracket
A= 2x^2-2x+3x-3
collect like terms
A= 2x^2+x-3
P= 2L+2W
P= 2*(2x+3)+2(x-1)
P= 4x+6+2x-2
collect like terms
P= 6x-4
but p= 28
28= 6x-4
28-4= 6x
24= 6x
x= 24/6
x= 4cm
Hence x= 4cm