Answer:
Step-by-step explanation:
The first step is to realize that this is a geometric sequence, where each next term in the sequence is 2.5 times larger than the previous. You can confirm this by the fact that 3=1.2*2.5, 7.5=3*2.5, and 18.75=7.5*2.5. Now, you can write the formula, where n is where the number is in the sequence, and a is the number itself. Since 1.2 is the first term in the sequence and the rate of expansion is 2.5, the formula is:
Hope this helps!
Answer:
children = 172 adults = 190
Step-by-step explanation:
x= 172 y=190
1.5x+4y = 1018
x+y=362
4x+4y=1448
-1.5x-4y=-1018
2.5x=430
x=172
1.5(172) + 4y =1018
258 + 4y = 1018
4y = 760
y = 190
3/4 of 120
=3/4*120
=360/4
=90
3/8 of 160
=3/8*160
=480/8
=60
25:1 is the constant of proportionality between the number of square yards of grouse to be covered and the number of scoops of grass seed needed.
This was found by reducing the any of the 4 provided proportions, each would end up leading you to 25/1