1/5x-2/3x15 =30
0.2x-30/3=30
0,2x-10=30
0,2x-10+10=30+10
0,2x=40
0.2x x5=40x5
x=200
Distributive property or
use FOIL (FOIL is just an acronym to help you remember how to multiply binomials)
distributive property
a(b+c)=ab+ac
(b+c)a=ba+ca
distribute
(-3s+2t)(4s-t)=
(-3s+2t)(4s)+(-3s+2t)(-t)=
(-3s)(4s)+(2t)(4s)+(-3s)(-t)+(2t)(-t)=
-12s^2+8st+3st-2t^2=
-12s^2-2t^2+11st
if you want foil
FOIL (just tells wich terms to multiply)
First
Outer
Inner
Last
exmaple
with
(a+b)(c+d)
First: a times c
Outer: a times d
Inner: b times c
Last: b times d
then add them
(-3s+2t)(4s-t)
First: -3s times 4s=-12s^2
Inner: 2t times 4s=8st
Outer: -3s times -t=3st
Last: 2t times -t=-2t^2
add them
-12s^2+8st+3st-2t^2=
-12s^2+11st-2t^2
same
The zeros are 5/2 and -4/5, I think.
Answer:
Distance covered by the man in 3 rounds of a field = 3 x Perimeter of a rectangular field 16. A lane 180 m long and 5 m wide is to be paved with bricks of length 20 cm and breadth 15 cm. Find the cost of bricks that are required, at the rate of Rs 750 per thousand.
Step-by-step explanation:
3.11111... = 3 + 1/9 = 28/9
Every time you see such a repeating decimal, it's basically a fraction with 9's in the denominator.
For example:
0.222... = 2/9
0.45454545... = 45/99
0.274274274... = 274/999