A) $7(k-3)=3k-5\\ 7k-21=3k-5\\ 7k-3k=-5+21\\ 4k=16\\ k=\frac { 16 }{ 4 } \\ k=4$

b) $(2x+3)(x-8)\\ 2{ x }^{ 2 }-16x+3x-24\\ 2{ x }^{ 2 }-13x-24$

c) $\frac { 7-3f }{ 4 } =2\\ 7-3f=4\cdot 2\\ 7-3f=8\\ -3f=8-7\\ -3f=1\\ f=-\frac { 1 }{ 3 }$

7 0

4 years ago

Read 2 more answers

Math 6. Grade 6.

AlexFokin [52]

R - 5 1/6 = 10

r - 31/6 = 10
+ 31/6 +31/6

r = 91/6

So, r = 91/6.

And, I am not sure if the second one I am doing in right or wrong, but I am just guessing.
I think you use substitution method here.

8(x-2)+9 = 14
8x-16+9 = 14
8x-7 = 14
+7 +7
8x = 21
x = 21/8

So, the answer is 21/8

HOPE THID HELPS AND I REALLY HOPE THAT THE SECOND ANSWER IS RIGHT!!!!!!

3 0

3 years ago

The function f(x)is shown in the graph.<br><br> What is the equation for f(x)?

kirill115 [55]

Answer:

(-5/6)x - 1

Step-by-step explanation:

the equation is given by: y = mx + b

m = slope

b = y intercept

m = -5/6

y intercept = -1

f(x) = (-5/6)x - 1

8 0

3 years ago

I cant solve this, 10 points for correct answer plz!​

I cant solve this, 10 points for correct answer plz!