(a)
(b)
(c)
Solution:
To write each of the given expression in the form :
(a)
Using exponential rule:
(b)
Divide numerator and denominator by the common factor 2, we get
Using exponential rule:
(c)
Divide numerator and denominator by the common factor 7, we get
Using exponential rule:
Answer:
27 minutes
Step-by-step explanation:
Given that:
It takes 16 minutes for 9 people to paint 8 walls.
i.e
16 minutes ------------ 9 people ---------- 8 walls
How many minutes does it take 4 people to paint 6 walls?
let the number of minutes be (m). NOW;
(m) minutes ------------ 4 people ------------ 6 walls
If it takes 16 minutes for 9 people to paint 8 walls.
∴ For 1 person to paint 8 walls; it will take 16 minutes × 9 = 144 minutes
So, to determine the number of minutes it will take 1 person to paint 6 walls; we have;
6 walls =
6 walls × 144 minutes = 8 walls × (m)
(m) =
m = 108 minutes
So, it will take 108 minutes for one person to paint 6 walls.
For 4 people now; we have
m =
m= 27 minutes
∴ it will take 27 minutes for 4 people to paint 6 walls
X(x+1) = 132
x^2+x = 132
x^2+x-132 = 0
Factoring this gets you
(x+12)(x-11) = 0
x = 11 only because x = -12 is negative and you’re looking for positive integers
x+1
11+1
12
The two integers are 11 and 12
There are 6 smaller bars
Explanation: 2 1/4 lb. to ounces is 36 ounces. Divide it by 6 and it makes 6 smaller bars.
From -∞ to -4 the blue line is above the X axis which means it is >0
The blue line is negative between -4 and -3
This would make the correct answer: F(x) > 0 over the interval (-∞,-4)