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2 years ago

14

The ratio of males to females in the class is 5 to 9. If the lunchroom has the same ratio but 45 females, how many males are in

the lunchroom?

2 answers:

kakasveta [241]2 years ago

6 0

Answer:

25

Step-by-step explanation:

45 times 5 = 225

225 divided by 9 = 25

disa [49]2 years ago

5 0

Answer:

25

Step-by-step explanation:

5:9 and x:45

45*5/9 which is 25

Hope this helps!

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Morgarella [4.7K]

$\text{mass of freight train} = 9.98 \times {10}^{6} kg$

$\text{mass of aircraft carrier} = 7.3 \times {10}^{7} \: kg$

$\text{difference of masses of aircraft and train: } \\ \\ 7.3 \times {10}^{7} - 9.98 \times {10}^{6} \\ \\ = 73 \times {10}^{6} - 9.98 \times {10}^{6}$

$= (73 - 9.98 )\times {10}^{6} \\ \\ = 63.02 \times {10}^{6} \\ \\ = 6.302 \times {10}^{6} \: kg \\ \\ \approx 6.3 \times {10}^{6} \: kg$

Approximately, aircraft carrier is 6.3 × 10^6 kg heavier than the freight train.

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