2 years ago

I need the answer to this question please

1 answer:

8 0

X^2 + x < 20
x^2 + x - 20 <0
set the left side equal 0

(x+5)(x-4) = 0
x + 5 = 0; x = -5
x - 4 = 0 ; x = 4

so solutions:
x has to be between -4 and 5 means
-5 < x < 4

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2 years ago

Which graph shows the solution to the system of linear inequalities?<br> y< 2x-5<br> y>-3x + 1

trapecia [35]

Answer:

See explanation

Step-by-step explanation:

Plot the solution sets to both inequalities.

1. For the inequality $y$ First, plot the dotted line $y=2x+5$ (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.

$2\cdot 0-5=-5$

so the origin does not belong to the needed part. Shade the part, which does not include origin.

2. For the inequality $y>-3x+1.$ First, plot the dotted line $y=-3x+1$ (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.