Lets simplify this
2x^2 + 2x - 10 _< 2
4x^2 - 10 _< 2
4x^2 _< -8
x^2 _< -2
x _<1.41
on the graph plot a line, then a filled in cirlce at 1.41
Answer:
3rd option
Step-by-step explanation:
Given
← factor numerator and denominator
=
← cancel (x - 3) on numerator / denominator
= ![\frac{x-7}{x+4}](https://tex.z-dn.net/?f=%5Cfrac%7Bx-7%7D%7Bx%2B4%7D)
-3 + -17 = -(3+17) = -20
Note:
When adding 2 negatives, you add the numbers and put a minus sign in front of your answer, when adding a positive and a negative number, always put the positive number first and then remove the + sign and subtract.
Hope this helped!
Answer:
x<-4
Step-by-step explanation:
Answer:
A. 19.5
Step-by-step explanation:
Diagonals of a rhombus intersect at right angles. Therefore the angle opposite to AD = 90°.
Thus:
90° + x + 3x + 12 = 180° (sum of ∆)
Add like terms
102 + 4x = 180
Subtract 102 from each side
4x = 180 - 102
4x = 78
Subdue both sides by 4
x = 19.5