this property name is multiplicative inverse
First, we know (D is dad, J is Jill) that D+J=50.
Second, in 5 years D will be 3 times as old so
(D+5)= 3*(J+5)
Moving on, if we know D+J=50 then D=(50-J) is true.<span>Taking that relationship and substituting for D in the other equation, it becomes
50 - J + 5 = 3 * (J + 5)
Then, it becomes </span>50 - J + 5 = (3 * J) + (3 * 5)
Then, 55 - J = (3 * J) + 15
Then, 55 - 15 = (3 * J) + J
<span>which becomes 40 = 4*J</span>
Step-by-step explanation:
vol =πr²h
22/7×8×8×3
= 603.2
Answer:
K=-2
Step-by-step explanation:
-3 = 5k + 7
Subtract 7 to the other side
-3 -7 = 5k
-10 = 5k
-2 = k
I think the area is 63. Sorry if it is incorrect.
