Answer:
Where are the reasons and boxes? Could you repost with more information or a picture please? Thank you!
Step-by-step explanation:
The answer is 50, and it can be solved using the percent proportion
Answer:
4/15 = height of lamp/(15+5)
4/15 = height of lamp/20
20/15 = 1 5/15
1 5/15 times taller
Answer: 19%
Step-by-step explanation:
You take 17 times 2.5 which you get 42.5 which is so you know how much the battery has charged. You then take the 61.5 minus 42.5 and which is 19
9514 1404 393
Answer:
19. wrong multiplier was used, and used incorrectly; x = -324
20. wrong multiplier was used, and used incorrectly; y = 5
Step-by-step explanation:
In each case, the equation was multiplied by the coefficient of the variable, instead of divided. In each case, the square of the coefficient was evaluated incorrectly (so the error wasn't noticed).
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19) As described above.
(-36)(9) = (x/9)(9)
-324 = x
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20) In addition to the errors described above, the variable was changed from y to x.
15/3 = (3y)/3
5 = y
