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krok68 [10]
3 years ago
5

Help me please i need answers for my sisters homework

Mathematics
2 answers:
frozen [14]3 years ago
4 0
Eleven Million Seven Hundred and Sixty Thousand Eight Hundred and Twenty-five.
Mnenie [13.5K]3 years ago
3 0
11,760,825

word form : eleven million seven-hundred sixty thousand eight-hundred twenty- five.

expanded form : 10,000,000 + 1,000,000 + 700,000 + 60,000 + 0 + 800 + 20 + 5
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It is .6 of a kilometer 
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a sum of money is divided among two friends in the ratio 4:11 if the smaller amount is $420, determine the larger amount?​
bixtya [17]

Answer:

1155

Step-by-step explanation:

let the ratio be 4x:11x

4x=420

x=105

11x=11*105

=1155

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Which of the following values are solutions to the<br> inequality –8 + 2x &gt; 5
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6

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A bird leaves its nest and travels 20 miles per hour downwind for x hours. On the return trip, the bird travels 4 miles per hour
Reil [10]

Answer:

The correct answers are:

A) 60 miles; and B) 3.375 hours.

Explanation:

We will use the equation d = rt for this.

For the first leg of the trip, the bird travels 20 miles per hour for x hours.  This gives us the equation

d = 20x

For the return trip, the bird travels 4 miles per hour slower, so 20-4 = 16 miles per hour.  He also travels 6 miles less than the return distance, for x hours:

d-6 = 16x

To isolate d, we will add 6 to each side:

d-6+6 = 16x+6

d = 16x+6

We will set the two equations equal to one another, since they both equal d:

20x = 16x+6

Subtract 16x from each side:

20x-16x = 16x+6-16x

4x = 6

Divide both sides by 4:

4x/4 = 6/4

x = 1.5

He travels for 1.5 hours both times.

The first time, 1.5 hours at 20 miles per hour is:

d = 1.5(20) = 30 miles

The original trip is 30 miles.  This makes the entire trip 30(2) = 60 miles.

On the return trip, he travels 30-6 = 24 miles at 16 miles per hour:

24 = 16x

Divide both sides by 16:

24/16 = 16x/16

1.5 = x

If he goes 24 miles in 1.5 hours at 16 miles per hour, we can use a proportion to find the time it takes for the entire return trip:

24/1.5 = 30/x

Cross multiplying,

24*x = 1.5(30)

24x = 45

24x/24 = 45/24

x = 1.875

This gives him a total time of 1.5+1.875 = 3.375 hours

Step-by-step explanation:

7 0
3 years ago
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