Answer:
f(x) = x² + 7x + 12
Step-by-step explanation:
Given that the zeros are x = - 3 and x = - 4, then the factors are
(x - (- 3)) and (x - (- 4)), that is (x + 3) and (x + 4)
f(x) is the product of the factors, that is
f(x) = (x + 3)(x + 4) ← expand using FOIL
f(x) = x² + 7x + 12
Answer:
The anwer for number three is
a) x= 36
b) x= 14
c) x= 7.7
Step-by-step explanation:
The unit rate is $21.11 per square foot :)
So first year he has 6200 in his account and gets 2.5% which is
6200...100
X...........102.5
![x = \frac{102.5 \times 6200}{100}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B102.5%20%5Ctimes%206200%7D%7B100%7D%20)
Which makes x=6355
Next year he gets 2.5% of 6355
So in 2 years he has
![x = \frac{102.5 \times 6355}{100}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B102.5%20%5Ctimes%206355%7D%7B100%7D%20)
Which makes it 6.513,875
And the last year (with the same formula) he will have
6.676,721875 In his bank account
Answer:
The answer is actually 5.17 centimeters
Step-by-step explanation:
The question is asking you to calculate the minimum thickness so you have to find the lowest bounds.
The covers are 0.9 mm to 1 d.p so the minimum thickness is 0.85 because that is the lowest bound.
The pages are 0.13 mm to 2 d.p so the minimum thickness is 0.125 as that is the lowest bound.
0.85 x 2 = 1.7 and 0.125 x 400 = 50
50 + 1.7 = 51.7 which is the minimum length.