Solve inequality for x -4(2x+4)>8x+64
2 answers:
Answer:
x < -40/13
Step-by-step explanation:
-4(2x + 4) > 8x + 64
-8x -16 > 8x + 64 use distributive property first
+8x +8x isolate the variable to one side
-16 > 26x + 64
-64 -64 -64 from both sides to get both terms on either side
-80 > 26x
÷26 ÷26 ÷26 on both sides to get x without any numbers
-80/26 > x
x < -80/26
x < -40/13 simplify
Your answer is x < -40/13
make sure the negative symbol is not next to the 40 only but is where the line is to show the fraction (I hope this makes sense - let me know if not)
Hope this helps!
Answer:
x< - 
Step-by-step explanation:
x 8x_16>8x+64
Add similar elemants:x - 8x= -7x
-7x - 16 > 8x + 64
Add 16 to both sides
-7x- 16 + 16 > 8x + 64 + 16
Simplify
- 7x > 8x + 80
Subtract 8x from both sides
-7x - 8x > 8x + 80 - 8x
Simplify
-15x > 80
Multiply both sides by - 1 ( reverse the inequality)
(-15x) ( - 1) < 80 ( - 1 )
simplify
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Answer:160
Step-by-step explanation:first I did 40*100=4000 then I divide by 25 so I got 160
The lunches cost 8.79 dollars per student and guessing that the teacher and student tickets cost the same, the passes are 17.83 dollars.
Answer:
7 years
Step-by-step explanation:
Given that:
Let Richard's age = x
Elder sister's age = 2x
Youngwr sister's age = x - 2
Product of sisters ages = 70
2x * (x - 2) = 70
2x² - 4x = 70
2x² - 4x - 70 = 0
x² - 2x - 35 = 0
x² - 7x + 5x - 35 = 0
x(x - 7) +5(x - 7) = 0
(x - 7) or (x + 5) = 0
x = 7 or x = - 5
X can't be negative
Hence, x = 7
Richard is 7 years
Answer:
A is true.
B is true.
C is true.
D is false.
E is true.
F is false.
G is false.
Answer:
Slope: 1
Step-by-step explanation:
A variable is always worth 1 if there is no number in front of it. In this case there is no number, so just draw in a one.
