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Elden [556K]
3 years ago
10

Robby goes to the supermarket to buy a bag of chips. He brings $20 to the store and pays $3.79 for the chips. On the way home, h

e finds $1.35 in coins on the sidewalk. How much money does Robby have when he gets home?
Mathematics
2 answers:
maksim [4K]3 years ago
8 0
Your answer is $17.56.
tangare [24]3 years ago
7 0

you must subtract to obtain the quantity that Robby has when he has  bough  the chips ,20- 3.79 =   $ 16,21 but when he return to home he finds $ 1.35, then he has $ 1.35 + $ 16,21 =  $17,56

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Phantasy [73]

Answer:

a = 6, b = 8, and c = 10.

Step-by-step explanation:

You can easily use the Pythagorean Theorem to solve all of these.

a = 4; b = 6; c = 8... 4^2 + 6^2 = 16 + 36 = 52. 8^2 = 64. 52 is not equal to 64, so the first choice is not a right triangle.

a = 6; b = 8; c = 10... Well this is a multiple of the 3-4-5 Pythagorean triple, so this is a right triangle.

a = 5; b = 6; c = 761... 5^2 + 6^2 = 25 + 36 = 61. 761^2 = 579121, which is not equal to 61, so the third choice is not a right triangle.

a = 6; b = 9; c = 12... 6^2 + 9^2 = 36 + 81 = 117. 12^2 = 144, which is not equal to 117, so the fourth choice is not a right triangle.

The only case where there is a right triangle is the second choice, where a = 6, b = 8, and c = 10.

Hope this helps!

3 0
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Read 2 more answers
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