Answer:
![2x^2(6x - 1) + 3(6x - 1)](https://tex.z-dn.net/?f=2x%5E2%286x%20-%201%29%20%2B%203%286x%20-%201%29)
Step-by-step explanation:
Given
![12x^3 - 2x^2 + 18x - 3](https://tex.z-dn.net/?f=12x%5E3%20-%202x%5E2%20%2B%2018x%20-%203)
Required
Factorize
To start with; we need to group the expression into two
![(12x^3 - 2x^2) + (18x - 3)](https://tex.z-dn.net/?f=%2812x%5E3%20-%202x%5E2%29%20%2B%20%2818x%20-%203%29)
Factorize each grouped expression, using their common factor
![2x^2(6x - 1) + 3(6x - 1)](https://tex.z-dn.net/?f=2x%5E2%286x%20-%201%29%20%2B%203%286x%20-%201%29)
From the list of given options;
Option A is correct
Answer:
210
Step-by-step explanation:
Answer:
There were 693 students before the increase.
Step-by-step explanation:
You just take 90 percent of 770, which is 770 * 0.90 = 693.
You want y? One way to get y alone would be to mult. all 3 terms by (7/5):
(7/5)(5/7)y = (7/5)*3 - (7/5)(-1/5). This simplifies to:
y = 21/5 * 7/25, or y = 147 / 125.
You could check this using decimal fractions:
y = 4.20 * 0.28 = 1.176 = 147 / 125.
Answer:
a. Ryan 70mph. Janelle 65mph.
b. 4 hours and 48 minutes.
Step-by-step explanation:
a. Ryan 245/3.5=70 mph. Janelle 260/4=65 mph.
b. If Janelle drives 575 miles with the speed of 65 mph, in total it would take her 575/65=8.8 hours, which is 4.8 hours more than 4 hours. (0.8 hours is 48 minutes).