To find the value of your expression, you could use the following steps;
First lets substitute the value of x in the equation;
7 + 2(-3 - 9) - (-3+ 2)
Next, simplify the parenthesis;
7 + 2(-12) - (-1)
7 - 24 + 1 = -16
So your final answer would be; -16
12 - 5(3r + 2) = 17 |use distributive property a(b + c) = ab + ac
12 - 15r - 10 = 17
2 - 15r = 17 |subtract 2 from both sides
-15r = 15 |divide both sides by (-15)
r = -1
(5x² + 2x - 3)(x - 1)
= 5x³ - 5x² + 2x² - 2x - 3x + 3
= 5x³ - 3x² - 5x + 3
In short, Your Answer would be Option D
Hope this helps!
Answer:
38 degrees
Step-by-step explanation:
Since angles KLO and OLM are supplementary, they add up to 180 degrees
So, angle OLM is 180-134=46 degrees
Similarly, angles OMN and OML are supplementary, so they also add up to 180 degrees
So, angle OML is 180-84=96 degrees
You also know that the angles of a triangle sum up to 180 degrees
So, 46+96+x=180
180-142=38
x=38 degrees
