3 years ago

PLZ Help!!! Best answer gets Brainliest!!!

Mathematics

2 answers:

bearhunter [10]3 years ago

5 0

Answer:

Yes, it does show a proportional relationship.

Step-by-step explanation:

For every 1/4 that x increases, y then increases by 3.

emmasim [6.3K]3 years ago

3 0

Answer:

yes its shows a proportional relationship

Step-by-step explanation:

i love khan academy

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At Rafael's auto shop, it takes him 15 minutes to do an oil change and 24 minutes to do a tire change. Let x be the number of oi

irakobra [83]

Answer:

5x + 8y < 20

Step-by-step explanation:

Oil change

Time = 15 min
Number = x

Tire change

Time = 24 min
Number = y

Time limitation = 60 min

Required inequality:

15x + 24y < 60

Simplified

5x + 8y < 20

7 0

3 years ago

Factor completely, the expression: 2x^3-2x^2-12x

muminat

$2x^3-2x^2-12x=2x(x^2-x-6)=(*)\\\\------------------------------\\x^2-x-6\\\\a=1;\ b=-1;\ c=-6\\\\\Delta=(-1)^2-4\cdot1\cdot(-6)=1+24=25\\\\\sqrt\Delta=\sqrt{25}=5\\\\x_1=\frac{1-5}{2\cdot1}=\frac{-4}{2}=-2;\ x_2=\frac{1+5}{2\cdot1}=\frac{6}{2}=3\\\\x^2-x-6=(x+2)(x-3)\\\\------------------------------\\\\(*)=2x(x+2)(x-3)$