Respuesta :

Siobha
(A)
-mk-110>75
-mk>185
mk<-185
m<-185/k

(B)
2c-8f=24
2c=24+8f
8f=2c-24
f=(2c-24)/8
f=1/4c-3

Part a:

Answer:

-mk - 110 < 75

-mk > 75 + 110

-mk > 185

mk < -185

m < [tex]\frac{-185}{k}[/tex]

Step-by-step explanation:

Firstly, since you're only solving for m, k can be treated as a constant.  The essence of the procedure to solve this is to position all the variable terms (terms with m) on one side of the inequality  and all the constant terms (terms with only numbers and terms with k) on the other side.  Then both sides can be simplified to determine m in terms of the constant terms.

With that in mind, starting with the given equation:

-mk - 110 > 75

Add 110 to both sides:

-mk - 110 + 110 > 75 + 110

Simplify:

-mk > 185

Divide both sides by k:

[tex]\frac{-mk}{k}[/tex]> [tex]\frac{185}{k}[/tex]

Simplify:

-m > [tex]\frac{185}{k}[/tex]

Multiply both sides by -1. Note that when you multiply (or divide) an inequality  by a negative number, you must flip the inequality:

-m × (-1) < [tex]\frac{185}{k}[/tex] × (-1)

Simplify:

m < [tex]\frac{-185}{k}[/tex]

Which gives you the final answer: m < [tex]\frac{-185}{k}[/tex]

Part b:

Answer:

2c - 8f = 24

-8f = 24 - 2c

-f =  [tex]\frac{24 - 2c}{8}[/tex]

-f = 3 - [tex]\frac{1}{4}c[/tex]

f = [tex]\frac{1}{4}c - 3[/tex]

Step-by-step explanation:

Firstly, since you're only solving for f, c can be treated as a constant.  The essence of the procedure to solve this is to position all the variable terms (terms with f) on one side of the equality  and all the constant terms (terms with only numbers and terms with c) on the other side.  Then both sides can be simplified to determine f in terms of the constant terms.

Starting with the given equation:

2c - 8f = 24

Subtract 2c from both sides:

2c - 8f - 2c = 24 - 2c

Simplify:

-8f = 24 - 2c

Divide both sides by 8:

[tex]\frac{-8f}{8}[/tex] = [tex]\frac{24 - 2c}{8}[/tex]

Simplify:

-f = [tex]\frac{24}{8}[/tex] - [tex]\frac{2c}{8}[/tex]

-f = [tex]3 - \frac{1}{4}c[/tex]

Multiply both sides by -1:

- f × (-1) = ( [tex]3 -\frac{1}{4}c[/tex]) × (-1)

Simplify:

f = [tex]-3 + \frac{1}{4}c[/tex] = [tex]\frac{1}{4}c - 3[/tex]

Which gives us the final answer: f = [tex]\frac{1}{4}c - 3[/tex]

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