Answer:
x = - 
, x = 3
Step-by-step explanation:
To find the zeros let p(x) = 0 , that is
2x² - 3x - 9 = 0
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 2 × - 9 = - 18 and sum = - 3
The factors are - 6 and + 3
Use these factors to split the x- term
2x² - 6x + 3x - 9 = 0 ( factor the first/second and third/fourth terms)
2x(x - 3) + 3(x - 3) = 0 ← factor out (x - 3) from each term
(x - 3)(2x + 3) = 0
Equate each factor to zero and solve for x
2x + 3 = 0 ⇒ 2x = - 3 ⇒ x = -
x - 3 = 0 ⇒ x = 3
A. 8.8 students per day on average were absent.
1) If the absence recorded was:
On Monday: 11
On Tuesday: 9
On Wed: 6
On Thu: 9
On Fri: 9
2) Since the number of weekdays were 5 we can calculate the mean of absent students by adding all those absences and dividing by 5
So, 11+9+6+9+9+9 =44
Dividing by 5
So the mean or the average of the absence was 8.8
I made 24 street tacos.
Each of my friends gets 3 of these bomb tacos.
How many of my friends are great enough to eat my tacos?
To solve the problem:
24/y=3
Multiply by y on each side.
24=3y
Divide by 3.
8=y
Hope this helps!
Knowing the fact:
1 km = 1000m
1 m = 100cm
We can calculate:
0.25 km = 0.25 * 1000m = 250m = 250 * 100cm = 25 000cm
700. To find out what number a value is ten times as much as, divide by 10.
