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alina1380 [7]
3 years ago
8

I'll give brainliest if you show your work. Plz answer quickly.

Mathematics
2 answers:
vlabodo [156]3 years ago
8 0

 C) In step 3, he should have determined which square is closest to 18.

Maslowich3 years ago
5 0

Answer:

  C) In step 3, he should have determined which square is closest to 18.

Step-by-step explanation:

17.64 also rounds to 18. 17.64 differs from 18 by ...

  18 -17.64 = 0.36

whereas 18.49 differs from 18 by ...

  18.49 -18 = 0.49

Hence 17.64 is closer to 18 and we might expect 4.2 to be closer to √18 than is 4.3.

___

The actual root of 18 is about 4.243, so 4.2 is a better approximation.

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3 years ago
John weighs three times as much as Karen. Two times John's weight plus Karen's weight is 875 pounds. How much does John weigh? H
Leokris [45]

Answer:

John- 375

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Step-by-step explanation:

Answer 1...

j =3k

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substituting the first eqn into the 2nd

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3 0
2 years ago
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2 years ago
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Evaluate 15r -1 when r=5
alukav5142 [94]

Answer:

74

Step-by-step explanation:

You just have to substitute r with 5.

Now, the equation looks like this:

15(5)-1

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\frac{\left[\begin{array}{ccc}1&5\\5\\\end{array}\right] }{75}

Lastly, do 75-1 which equals 74

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Therefore, 74 is your answer.

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