Answer:
96 postcards
Just multiply 12 my 8. Since we have the ammount of postcards Jennifer has, the second sentence simply tells us that we need to multiply it by 8 because Frieda had 8 times the ammount as Jennifer did.
Answer:
37
Step-by-step explanation:
1.90x20 = 38 (This is how much she was paid)
70-38 = 37
Formula:
How much she paid (Running costs) - How much she was paid = Total loss
Answer:
Step-by-step explanation:
Given the differential equation
25y′′+40y′+16y=0
Using D operator to find the complementary solution
Since the Differential equation is equal to 0, then it doesn't have a partial solution.
25y′′+40y′+16y=0
25D² + 40D +16 = 0
25D² + 20D + 20D +16 = 0
5D(5D+4)+4(5D+4)= 0
(5D+4)=0 twice
D = -4/5 twice,
So the solution is a real and equal roots
y(t) = (A+B•t) exp(—0.8t)
Where A and B are constant
The initial value are.
y(0)=a, y′(0)=−1
y(0) = a = (A+B(0)) exp(—0.8(0))
a = A
Then, the constant A = a.
Now, y'(t)
y'(t)=B•exp(-0.8t)-0.8(A+B•t)exp(-0.8t
-1 = B - 0.8A
Since A =a
Then, B = 0.8a —1
The solution becomes
y(t) = (a+(0.8a-1)•t) exp(—0.8t)
For t>0
For positive,
a + (0.8a -1)> 0
1.8a > 1
a > 1/1.8
a > 10/18 > 5/9
a > 5/9.
Paul hit the golf ball 255 feet.
Danika hit the golf ball 80 yards.
Paul hit the golf ball 1080 inches farther than Billy.
Answer:
1 and 10/8
Step-by-step explanation:
5+5=10/1
5+3=8
