anonymous
  • anonymous
make a the subject of the formula s=a/4+8u will medal
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@UsukiDoll
undeadknight26
  • undeadknight26
s = a/4 + 8u Subtract both sides by 8u. s - 8u = a/4 Multiply both sides by 4. a = 4(s - 8u)
UsukiDoll
  • UsukiDoll
are we solving for a in this question?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

undeadknight26
  • undeadknight26
O.O
UsukiDoll
  • UsukiDoll
I just want clarification before I go further
UsukiDoll
  • UsukiDoll
@Sophhh786 is this question about solving for a ? as in having a by itself?
anonymous
  • anonymous
yes
UsukiDoll
  • UsukiDoll
alright so given the equation \[s= \frac{a}{4}+8u\] is this your equation?
anonymous
  • anonymous
yes
UsukiDoll
  • UsukiDoll
alright so.. we need to get rid of the fraction. Therefore multiply 4 throughout the equation. Can you do that?
anonymous
  • anonymous
yes 4s =a+8u
UsukiDoll
  • UsukiDoll
close. the 4s and the a is right but for the 8u it should be 4(8u) = 32u
anonymous
  • anonymous
why?
UsukiDoll
  • UsukiDoll
because we are multiplying 4 throughout the equation. every term is going to be multiplied by 4
UsukiDoll
  • UsukiDoll
\[(4)s= \frac{a(4)}{4}+8u (4)\]
anonymous
  • anonymous
so it is like linear equations
UsukiDoll
  • UsukiDoll
yeah
UsukiDoll
  • UsukiDoll
so now we have \[4s=a+32u\] so we just need one more step. What do we need to do to get a by itself?
anonymous
  • anonymous
divide 4 y both sides
anonymous
  • anonymous
by
UsukiDoll
  • UsukiDoll
not exactly.. we need a by itself and we have this equation. it's like get all the terms that's NOT a to the left so I need to subtract both sides by 32u
anonymous
  • anonymous
i still dont understand why we need to multiply everything by 4 in the equation u should just multiply the 4 in the fraction and s ?
UsukiDoll
  • UsukiDoll
we multiplied 4 throughout the equation at the beginning to get rid of the fraction
UsukiDoll
  • UsukiDoll
there's more than one way to solve this... first is what I and undeadknight did earlier which was to multiply 4 throughout the equation to get rid of the fraction that was attached to a. then subtract 32u on both sides. it will look something like this \[4s=a+32u \] \[4s-32u=a+32u-32u \] \[4s-32u=a \]
UsukiDoll
  • UsukiDoll
so let's do an alternative version where we don't multiply 4 throughout the equation first.
anonymous
  • anonymous
ok
UsukiDoll
  • UsukiDoll
\[s= \frac{a}{4}+8u \] is the original equation. and we need a by itself. so I have to shift all terms (except a because we need it by itself to the right) therefore subtract 8u on both sides
UsukiDoll
  • UsukiDoll
\[s-8u= \frac{a}{4}\] so we have a by itself... but now we have to divide each term by 1/4
anonymous
  • anonymous
im gonna stick with the first method you told me im gonna go through it step by step now if I have any difficulties in understanding i will give you a shout yeah? Thanks though :)
UsukiDoll
  • UsukiDoll
ok. :) yeah I prefer what @undeadknight26 did... for dividing 1/4 all over the equation.. we have to flip that second fraction (it will become 4/1 and then you have to use multiplication) because there's no such thing as dividing fractions.
anonymous
  • anonymous
yeh actually @undeadknight26 version makes sense to me
UsukiDoll
  • UsukiDoll
and fewer steps too :)
anonymous
  • anonymous
the only thing i dont get is why has he inserted brackets has he factorized in the last stage or something
UsukiDoll
  • UsukiDoll
oh ... in that step there was a 4 in common so he took it out
UsukiDoll
  • UsukiDoll
a=4(s-8u) distributing the 4 gives us a=4s-32u now we split up the number 32 a=4s-(4)(8)u there is a 4 on each term so we yank it out a=4(s-8u)
anonymous
  • anonymous
could you write it like this though a=4s-32 would that be appropriate for the final answer?
UsukiDoll
  • UsukiDoll
yeah
anonymous
  • anonymous
ok thanks @undeadknight26 and @UsukiDoll
UsukiDoll
  • UsukiDoll
you're welcome :)

Looking for something else?

Not the answer you are looking for? Search for more explanations.