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Mathematics, 29.11.2019 17:31 willow2444

Solve the inequality. 8x-5> _27. a. x> _4. b. x> _11/4. c. x< _4. d. x< _11/4

Answers

ansver
Answer from: esheagustafson
8x - 5 ≥ 27
8x ≥ 32 <-- Add 5 to both sides
x ≥ 4 <-- Divide both sides by 8

So, to be in solution set, x has to be greater or equal to 4.

In interval notation: [4, ∞)

In a set builder notation: {x | x ∈ R, x ≥ 4}
ansver
Answer from: Quest

5

step-by-step explanation:

ansver
Answer from: Quest

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

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Solve the inequality. 8x-5> _27. a. x> _4. b. x> _11/4. c. x< _4. d. x< _11/4...

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