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3 years ago

24 songs to 78 songs, find the percent in change, I had tried to work it out and i got 30% but its wrong

Mathematics

1 answer:

Sladkaya [172]3 years ago

5 0

78 * ( x/100) = 24 78 * x = 24 * 100 78 * x = 2400 X = 2400/28 X = 400/13 X = 30.77% The percent is 30.77

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2 years ago

In his boat, Sheldon can travel 45 mi downstream in the same time that it takes to travel 9 mi upstream. If the rate of the curr

Nataliya [291]

Answer:

9 mph

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-let x be the speed of current and t be time. The speed equation for both directions can then be represented as:

$Speed=\frac{Distance}{Time}\\\\\#Upstream\\(u-6)t=9\\\\\#Donwstream\\\\(u+6)t=45$

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3 years ago

The ratio of two numbers is 4:5 if the larger number is 300 what is the smaller number

yaroslaw [1]

Answer:

The smaller number is 240.

Step-by-step explanation:

The question says that the larger number is 300, so 5 has to be 300.

4:5

?:300

You can use cross-multiplication or find the scale factor to find the answer.

Cross-multiplication:

4 × 300 ÷ 5 = 240

Finding the scale factor:

300 ÷ 5 = 60

4 × 60 = 240

The smaller number is 240.

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2 years ago