3 years ago

Melanie counted her heartbeats after running her marathon. In 20 seconds, she counted 53 heartbeats. At

1 answer:

Elis [28]3 years ago

8 0

Answer:

159

Step-by-step explanation:

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Marrrta [24]

Answer:

53.6

Step-by-step explanation:

$C=\frac{5}{9}(F-32) \\ \\ 12=\frac{5}{9}(F-32) \\ \\ 21.6=F-32 \\ \\ F=53.6$

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2 years ago

dexar [7]

Y= 11-2x
Substitute in:
5x-2(11-2x)=-13
5x-22+4x=-13(combine like-terms)
9x-22=-13
9x=-13+22
9x=9
x=1

3 0

3 years ago

OlgaM077 [116]

25 = 5*5
405 = 81*5

therefore, 25/405 = (5*5)/(81*5)=5/81

6 0

3 years ago

ddd [48]

Answer:

225

Step-by-step explanation:

(17+8)*(14-3)=25*9=225

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4 years ago

Morgarella [4.7K]

Answer:

3468 students

Step-by-step explanation:

289 x 12 = 3468

8 0

2 years ago