Answer:
f^-1 (x) = x - 10...........
hey
let s note a and b the two numbers
we can write
(1) a = 2b - 2
(2) ab = 40
from (2) we can say for b different from 0 that
a = 40/b
replace it in (1)
40/b=2b-2
so
2(b-1)b = 40
b(b-1) = 20
5 is a trivial solution and as the product of the two solutions is -20 then the second solution is -4 therefore
<=> (b-5)(b+4) = 0
<=> b = 5 or b = -4
so we have
a= 40/b = 8 and b = 5
or
a = 40/b = -10 and b = -4
(8,5) and (-10.-4) are solutions
do not hesitate if you have any question
thanks
Answer:
Window. Thank you so much.
Step-by-step explanation:
Multiply the whole number by the denominator (8*40=320) then add it to the numerator (320+21=341).
Then you get 341/40
Answer:
Step-by-step explanation:
We’ll eventually apply our skills in algebra to solving equations in complex word problems. Usually start by translating a word phrase to an algebraic equation. Remember, an equation has an equal sign between two algebraic expressions. So if we have a sentence that tells us that two phrases are equal, we can translate it into an equation.