Answer:
<h2>x = 28</h2>Step-by-step explanation:
ΔARP and ΔCRD are similar. Therefore the sides are in proportion:
We have:
AR = 10 + x
CR = x
PR = 15 + 42 = 57
DR = 42
Substitute:
<em>cross multiply</em>
<em>use distributive property</em>
<em>subtract 42x from both sides</em>
<em>divide both sides by 15</em>
Answer: x ≤ -14
Step-by-step explanation:
3 - x ≥ 10
1) You want to subtract 3 from both sides of the equation: 3 - x ≥ 10
-3 -3
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2) Once you subtract 3 from both sides of the equation you'll be able to cancel out 3-3.
3) After, you'll be left with; -x ≥ 7
4) You'll then want to divide both sides by - to isolate x.
5) Divide 7 by -
6) X ≥ -14, but then you'll want to flip the inequality since you divided by a negative.
7) X ≤ -14
