Let x represent the number of US dollars required. From the information given,
1.2 Australian dollars equals one us dollar
Thus,
22 Australian dollars = x US dollars
We would have the following equations
1.2 = 1
22 = x
By crossmultiplying, we have
x * 1.2 = 1 * 22
1.2x = 22
Dividing both sides of the equation by 1.2, we have
1.2x/1.2x = 22/1.2
The expression that can be used to convert 22 Australian dollars to US dollars is
x = 22/1.2
Answer:
x = -3±sqrt( 5)
Step-by-step explanation:
(x + 3)^2-5=0
Add 5 to each side
(x + 3)^2-5+5=0+5
(x + 3)^2 = 5
Take the square root of each side
sqrt((x + 3)^2 )=±sqrt( 5)
x+3 = ±sqrt( 5)
Subtract 3 from each side
x+3-3 = -3±sqrt( 5)
x = -3±sqrt( 5)
Answer:
A: 60%
Step-by-step explanation:
- multiply .6 by 4.5 and then you get 2.7
- then add 2.7 and 4.5 and then you get 7.2
Answer:
-4m-2 Hope I helped
Step-by-step explanation: Remove parentheses.
4m−2−8m
Subtract 8m
from 4m
.
−4m−2
