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Marizza181 [45]
3 years ago
6

Define a variable, write an inequality, and solve each problem. # 30 Twice a number is more than the sum of that number and eigh

t.
Mathematics
1 answer:
laiz [17]3 years ago
8 0

n= number

2n > n+8

subtract n from each side

2n-n > n+8-n

n > 8

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It took a plane 2 hours to go from Dallas to NY with the head wind and 1.5 hours to get back with the tail wind. If the speed of
vladimir2022 [97]

Answer:

360 miles

Step-by-step explanation:

let speed of plane be x

speed of wind be c

Also note D = RT, where

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<u>For First Leg:</u>

we can write:

(x - c) * 2 = D

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<u>For Second Leg:</u>

we can write:

(x+c)*1.5 = D

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We can equate and write:

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0.5x = 3.5c

We know Speed of Wind, c, is 30, so we have:

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x = 105/0.5 = 210 [speed of airplane]

We know distance is

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D = 2(210) - 2(30)

D = 420 - 60

D = 360 miles

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6 0
3 years ago
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Paul [167]
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7 0
3 years ago
Which inequality represents the graph y&gt;-4 over 5x plus 3
Ipatiy [6.2K]

Answer:

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Step-by-step explanation:

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2 years ago
Can All mixed numbers can be renamed as decimals?
ohaa [14]

Answer:

We can convert a mixed number (or mixed fraction) to a decimal. Strategies to convert mixed fractions to decimals: Change the mixed fraction to an improper fraction and then divide. Convert the fractional part only and then add it to the whole number.

8 0
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|x-22| < 2

The < has an underline below it

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