X : the gas used by first car in 1 particular week
y : the gas used by second car in 1 particular week

Answer:
<h2>462</h2>
Step-by-step explanation:
15% of 840 is 126
30% of 840 is 252
252
<u>+ 126 </u>
<em> 378</em>
<em></em>
840 - 378 = <em>462</em>
or
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55% of 840 is...
<em>462</em>
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<em>Hope this helps! <3</em>
Literally whatever number is in the parenthesis, if it’s negative like -4 then you could down 4 lines of squares and put a dot. if it’s positive then go up
Answer: SAS similarity postulate
Step-by-step explanation:
According to SAS postulate of similarity, two triangles are called similar if two sides in one triangle are in the same proportion to the corresponding sides in the other, and the included angle are congruent.
In triangles, QNR and MNP,



Also,
(Reflexive)
Thus, By SAS similarity postulate,

⇒ Option first is correct.