Answer:
21x^2 + 20x + 4 = (3x + 2)(7x + 2).
Step-by-step explanation:
Given the expression is 21x² +20x +4
We can solve the equation as follows:-
21x² +20x +4 = 0
Then a = 21, b = 20, c =4.
Using Quadratic formula, x = ( -b ± √(b² -4ac) )/2a
x = ( -20 ± √(400 - 4*21*4) )/2*21
x = ( -20 ± √(400 - 336) )/42
x = ( -20 ± √(64) )/42
x = ( -20 ± 8 )/42
x = -28/42 or x = -12/42
x = -2/3 or x = -2/7
(x + 2/3) = 0 or (x + 2/7) = 0
Now the factored form can be written as follows:-
(x + 2/3)(x + 2/7) = 0
(3x+2)(7x+2) = 0
Hence, the factored form is 21x^2 + 20x + 4 = (3x+2)(7x+2).
Given function is f(t)=0.4t
Let the number f days that have passed since the seed was planted = t
As mentioned, Julie measured and determined the height of plant after 30 days so initially the value of t = 30
But we have to find the value of f(t) at t = 10
so f(10) = 0.4*10
f(t) = 4
Answer:
I don't know I'm sorry
Step-by-step explanation:
But you can do it I belive in you!!!!
The convert of TT$1 020.00 to US$150.
Given that,
- US $1.00 should be equivalent to the TT $6.80.
- Now we have to convert TT $1,020 to US $.
So, the value after converting should come
= $1,020 ÷ $6.80
= $150
Therefore we can conclude that the convert of TT$1 020.00 to US$150.
Learn more: brainly.com/question/2451390
