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mrs_skeptik [129]
3 years ago
15

Write the word sentence as an inequality. Then solve the inequality. 3/4 is greater than or equal to a number k divided by -8

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0

Answer:

  1. \frac{3}{4} \geq \frac{k}{-8}  
  2. k ≥ -6

Step-by-step explanation:

  1. Re-arrange: \frac{3}{4} \geq \frac{k}{-8}  
  2. Multiply each side by -8 to cancel out the -8 under k. It should now look like this: k ≥ -6

I hope this helps!

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Answer:

72 Wrong, so find how many are right with 135 total

Step-by-step explanation:

It's similar to saying if she answered half and this continued how many would she have answered after answering a bigger number, you would say half.

so she answered 8/15 incorrectly a a smaller number, so she will answer that ratio with a bigger number.  If it helps 8/15 is about 53%. just like 1/2 is half.  So to find half you would multiply something by 1/2 and int he same way you multiply something by 8/15 to get that proportion of it.

so 135, if you take this 53%, or simply multiply it by 8/15 you get your answer of 72.  So 72 wrong so al others are right, which you get with 135-72 = 63.

You could also do 135*(1-8/15) = 135 * 7/15.  if you ever want to find something NOT part of the proportion you do 1 - that proportion.

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