11. 1/3
12. 2/6
13. 1/4
14. 1/5
15. 1/3
with speed of 18 feet per second the distance between the twins change.
<u>Step-by-step explanation:</u>
Here we have , Two twins are running away from their mother in opposite directions one with the speed of 10 feet per second and the other with the speed of 8 feet per second. We need to find How and with what speed does the distance between the twins change. Let's find out:
Two twins are running in opposite directions , Let us suppose one twin speed is denoted by
, i.e. 10 feet per second
⇒ ![v_1=10](https://tex.z-dn.net/?f=v_1%3D10)
Now , Speed of other twin is
, i.e. -8 feet per second . Minus sign shows the direction as this twin is moving in opposite direction :
⇒ ![v_2=-8](https://tex.z-dn.net/?f=v_2%3D-8)
Now, Difference in both speeds will give the change in speed between them :
⇒ ![v_1-v_2=10-(-8)](https://tex.z-dn.net/?f=v_1-v_2%3D10-%28-8%29)
⇒ ![v_1-v_2=18](https://tex.z-dn.net/?f=v_1-v_2%3D18)
Therefore , with speed of 18 feet per second the distance between the twins change.
Answer:
1
Step-by-step explanation:
1+3=4
20÷5×4
20÷20
sorry if that's wrong
Step-by-step explanation:
H (3,-2 )..........J (5,5)...........K (x, y)
5=(3+x)/2
10=3+x
x=7
5=(-2+y )/2
10=-2+y
y=12
coordinates of k (7,12)
Answer:
The perimeter is 50.26 inches
Step-by-step explanation:
To find the circumference of the half-circle use
d/2
C = 3.14(9 x 2)/2
C = 3.14(18)/2
C = 56.52/2
C = 28.26
P = 5 + 12 + 5 + 28.26
P = 50.26