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3 years ago

The fathers age is the sum of the son and the mother

SAT

2 answers:

Anni [7]3 years ago

7 0

Answer: The son is 1 year old and the father is 27 years old.

Explanation: Let’s call the sons age x and the fathers is y. You have the equations x+26=y and 3(x+8)=y=3x+24. So you could say that (3x-24)-(x+26)= z -z. So 2x-2=0. Add 2 to both sides and get 2x=2. x = 1 so the son is 1 year old

yulyashka [42]3 years ago

7 0

Sry can you help me what is 7 3/4% as a fraction in simplest form

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3 years ago

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suppose you push a hockey puck of mass m across frictionless ice for a time 1.0 s, starting from rest, giving the puck speed v a

saul85 [17]

Answer: Twice the previous time would be taken to reach the same speed v with the puck of mass 2m.

Explanation:

Let a Force pushes the hockey puck of mass m.

Then acceleration, a= \frac{F}{m}a=mF

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\begin{gathered}\➪ v=u+at\\ v=0+\frac{F}{m}\Delta t\end{gathered}⇒v=u+atv=0+mFΔt ......(1)

In the second case, when mass is 2m, then acceleration,

a'=\frac{F}{2m}a′=2mF

and t' is the time taken.

The final speed is v,

\begin{gathered}\➪ v=0+ a't'\\ \➪ \frac {F}{m}\Delta t=\frac{F}{2m}t'\\ \➪ t'= 2\Delta t\end{gathered}⇒v=0+a′t′⇒mFΔt=2mFt′⇒t′=2Δt using equation (1)

Hence, it would take two times the previous amount of time to push the pluck of double mass.

 I hope this is understandable and if my answer helped you please can you give me a brainliest its will really help me and thank you have a nice day!!

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The fathers age is the sum of the son and the mother ​

The fathers age is the sum of the son and the mother