1a.
you still have
k=C+273.15
k-C= 273.15 as related equations
b. at C=23
k=23+273.15 = 296.15
c. 25°C in kelvin = 25+273.15 = 298.15
so 300K is greater than 25°C
Answer:
length=8 , wide=5
Step-by-step explanation:
Let length=x and wide=y
convert the question into two equations
3+y=x .......1
xy=40 .......2
so we need to substitute x into y or y into x
x=3+y ,
(3+y)y=40
y²+3y=40
y²+3y-40=0
from that use calculator or manually factorise it
(y+8)(y-5)=0
y= –8 , y=5
we need to choose positive answer so y=5
then find for x
5x=40
x=8
( x³ + 3 x² + 16 x + 48 ) : ( x + 3 ) = x² + 16
- x³ - 3 x²
-----------------------------
16 x + 48
- 16 x - 48
---------------------
r = 0
Answer: x² + 16