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4 years ago

Solution for 24.5 = -2.5c -4c

Mathematics

2 answers:

timama [110]4 years ago

8 0

24.5=-2.5c-4c
24.5=-6.5c
49=-13c
3.77=-c
c=-3.77

Rudik [331]4 years ago

6 0

Set of your problem as followed.24.5=−2.5c−4c
Then you simplify both side of your equation
24.5=−6.5c
Flip your equation now
−6.5c=24.5
Divide both sides of the equation by "-6.5"
−6.5c−6.5=24.5−6.5 (imagine a line going through the equal sign)

and your answer comes toc=−3.769231

To simplify even further, you'll round.
Since 9 is bigger than 5 then you'll round up to the nearest number. Which is 7. So your answer comes to
6=-3.77
Hope this helps. :)

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Answer:

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Step-by-step explanation:

There's a relation between each animal:

5 chickens equals 1 pig

3 pigs equals 2 sheep

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You can understand it as the following three abstractions:

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Where:

c is for chickens

p is for pigs

s is for sheep

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So now you have three equations with 4 variables. The next step is to obtain an equation that relates directly the variable c (chickens) with the variable o (cows). In order to do that from the equation 2 we obtain s in terms of p, as follow:

$3p =2s\\s=\frac{3p}{2} \\$

Then we replace s in the equation 3 and we obtain v in terms of p:

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$v=\frac{15}{2*2} p \\\\v=\frac{15}{4} p$

Now we replace v in the equation 1:

$4c = \frac{4}{15} v$

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The equation 4 means that 1 chicken equals the fifteenth part of a cow. For this case the farmer needs 20 chikens, so we multiply per 20 each part of the equation 4:

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Add h/y to both sides.

h/y + x = r

So, r = h/y + x

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x = r-h/y

Subtract r from both sides.

-r + x = -h/y

Multiply both sides by y.

y(-r + x) = y(-h/y)

Simplify.

-ry + xy = -h

Divide both sides by -1.

ry - xy = h

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