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lukranit [14]
3 years ago
6

PLEASE HELP FAST!! I CANNOT GET THIS WRONG!!!!

Mathematics
1 answer:
ruslelena [56]3 years ago
3 0

Answer:

6

Step-by-step explanation:

you kna mean?

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Flying against the wind, an airplane travels 4500km in 6 hours. Flying with the wind, the same plane travels 2910 kilometers in
katen-ka-za [31]

Let <em>a</em> denote the airplane's speed in still air, and <em>w</em> the windspeed.

When the plane flies against the wind, it can travel an average speed of

(4500 km) / (6 h) = 750 km/h

so that

<em>a</em> - <em>w</em> = 750 km/h

Flying with the wind, it moves at a speed of

(2910 km) / (3 h) = 970 km/h

so that

<em>a</em> + <em>w</em> = 970 km/h

Add the two equations to eliminate <em>w</em> and solve for <em>a</em> :

(<em>a</em> - <em>w</em>) + (<em>a</em> + <em>w</em>) = 750 km/h + 970 km/h

2<em>a</em> = 1720 km/h

<em>a</em> = 860 km/h

Subtract them to eliminate <em>a</em> and solve for <em>w</em> :

(<em>a</em> - <em>w</em>) - (<em>a</em> + <em>w</em>) = 750 km/h - 970 km/h

-2<em>w</em> = -220 km/h

<em>w</em> = 110 km/h

7 0
3 years ago
Katya decided that she could not afford the $48,000 it would cost her to attend college and get her four-year degree. Instead, s
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Answer: $310,000

Step-by-step explanation:

In 40 additional years, the amount she made less than her college counterparts was;

= 10,000 * 40

= $400,000

She however made $90,000 more than them as they went to college;

= 400,000 - 90,000

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The long-term financial cost was $310,000.

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3 years ago
The number of wins in the American Baseball League, Central Division, for a recent year is given in the table. Find the mean num
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Answer:

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Step-by-step explanation:

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2 years ago
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Romashka-Z-Leto [24]

Answer:

Draw it with 9 cm for length and width.

Step-by-step explanation:

The product is the maximum area when the length and width are as close as possible, or equal to each other. Because length and width are 2 sides each, we can divide 36 by 4, which is 9.

9x9 = 81 cm^2. This is the largest area possible.

4 0
3 years ago
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