1) 24 / 18 = 1.33 and 28 / 21 = 1.33
so the exchange rate must be 1.33
2)1080 - 720 = 360
360 / 12 = 30
so the change is $30 per year
3) The slope would be a straight line and the y- intercept would be +30
Hope this helps! :)
Answer:
Jupiter will travel 2,400 miles in 5 minutes.
Step-by-step explanation:
There is 60 seconds in a minute, so...
8x60=480
480x5= 2400
Answer:
One hour and 20 minutes.
Step-by-step explanation:
Answer:
a = 36 and a = 27
Step-by-step explanation:
The geometric mean of two numbers is the square root of the product of the two numbers.
Say for example we have the numbers x and y, the geometric mean z is mathematically;
z = √xy
For the first question, our z is 12, x and y are 4 and a respectively.
12 = √4a
square both sides
144 = 4a
a = 144/4
a = 36
For the second question
z is 9, x and y are 3 and a respectively
9 = √3a
square both sides
81 = 3a
a = 81/3
a = 27