Answer:
x = 12
y = 9
12 coins of dimes
9 coins of quartes
Step-by-step explanation:
x ---> coins of dimes
y ---> coins of quartes
x + y = 21
0.1x + 0.25y = 3.45 * 100
x + y = 21 L1
10x + 25y = 345 L2
x = 21 - y
Reemplace in L2
10(21 - y) + 25y = 345
210 - 10y + 25y = 345
15y = 345 - 210
15y = 135
y = 9
x = 21 - y
x = 21 - 9
x = 12
Speed of the east bound cyclist is 12 mph and the speed of west bound cyclist is 15 mph.
<u>Solution:</u>
Let us assume that x is speed of slower eastbound cyclist
So, x+3 will be the speed of faster westbound cyclist
We know that distance is the product of speed and time. That is,

West-bound DATA:
Rate of speed = x+3 mph ; Time = 6 hrs ; distance = 6(x+3) = 6x+18 miles
East-bound DATA:
Rate of speed = x mph ; time = 6 hrs. ; distance = 6x miles
On solving,
Distance apart = 162



So, the rate of speed of the east bound cyclist is 12 mph and the rate of speed of the west bound cyclist will be 

It was started by a scientist Ivan Pavlov who was a russian physiologist who started the Behaviorist movement in psychology.
During the experiment:
- The loud noise is the <u>unconditioned stimulus.</u>
- The fear reaction is the <u>unconditioned response.</u>
- The white rat is our <u>neutral stimulus.</u>
- When the loud noise and the white rat are paired over time, the white rat becomes the <u>conditioned stimulus.</u>
- The Fear reaction to the loud noise the <u>conditioned response.</u>
Our Answer is:
⛱️ 
Answer:
the slope is 1/2
Step-by-step explanation:
the line goes up 1 unit then right 2
Answer:
4/500
Step-by-step explanation: