3 years ago

Pick two answers please help I’m running out of time

Mathematics

1 answer:

arlik [135]3 years ago

7 0

Answer:

i say the very first two are the correct choices

Step-by-step explanation:

hope this helps you!:)

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One side of triangle is 7 more than 2 times the shortest side. the third side is 15 centimeters more than the shortest side. the

nikdorinn [45]

X = longest side , y = middle side , z = shortest side

P = x + y + z
P = 82
x = 2z + 7
y = z + 15

82 = (2z + 7) + (z + 15) + z...combine like terms
82 = 4z + 22
82 - 22 = 4z
60 = 4z
60/4 = z
15 = z

so the shortest side (z) is 15 cm
the second side (y) is : z + 15......15 + 15 = 30 cm
and the longest side (x) is : 2z + 7.....2(15) + 7 = 37 cm

7 0

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Sixty percent of the runners who ran the marathon finished the race. If fifteen runners finished, then how many runners ran in t

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Let they be x

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