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Orlov [11]
3 years ago
12

a boat leaves new orleans and travels upstream on the mississippi river for 4 hours the return trip takes only 2.8 hours becaus

e the boat travels 3 miles per hour faster downstream due to the current how far does the boat travel upstream ??
Mathematics
1 answer:
Igoryamba3 years ago
7 0

x = 7 miles upstream  


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The figure below has to be covered with multi-colored cloth. What is the area of the cloth in sq mm that is needed?
Georgia [21]

Answer:

26,250 sq mm^2

Step-by-step explanation:

First i cut the shape so its a rectangle on the top and there is a vertical rectangle. Then you find the lengths and to do that for the first rectangle(the horizontal one) you add 75, 75 and 75 to get the length. Then multiply 225(the sum of the 3 75s) by 75 (width) which gets you 16,875.

That is the area of the first rectangle

Now for the vertical rectangle you simply multiply the length and width, 75x125. That equals 9,375. Now add.

9375+16875= 26250!!!!

8 0
3 years ago
The formula to change F to C is F equal 9/5 C + 32. If the temperature is 21.5 C what is it in F?
Umnica [9.8K]

Answer:

F=70.7

Step-by-step explanation:

This is a simple substitution problem.

  1. The formula to change Fahrenheit to Celsius is F=\frac{9}{5}\left(C\right)+32.
  2. They give you C, so substitute it into the problem, which would give you F=\frac{9}{5}\left(21.5\right)+32.
  3. Simplify the right side of the equation by multiplying \frac{9}{5} by 21.5.
  4. Now, add 32 to 38.7, which should have been your answer to the previous step.
  5. You should now have F= 70.7 as your answer.
4 0
3 years ago
PLS HELP WILL MARK BRAINLIEST The average of eight consecutive odd integers is 48. What is the range of these eight numbers?
natima [27]

Answer:

Step-by-step explanation:

2x - 7 + 2x - 5 + 2x - 3 + 2x - 1 + 2x + 3 + 2x + 5 + 2x + 7   Combine like terms

16x / 8  = 48

2x = 48

x = 24

The range is defined as the largest number - the smallest number

The range is between 2x - 7 and 2x + 7

x = 24

The smallest number is 48 - 7 = 41

The largest number is 48 + 7 = 55

The range = 55 - 41 = 14

Why was the 2 in front of the x needed? It was to make sure that I could create an odd number.

Why did I subtract an odd number? That was to make sure that I could create odd numbers.

Why did I start with 2x - 7 and end up 8 terms later at 2x + 7?

So the numbers would cancel and I'd only be left with x's.

3 0
3 years ago
30 POINTS!!! PLEASE HURRY!!Which of the following graphs correctly represents x > -1/2
miss Akunina [59]
<h3>Answer: Second graph</h3>

Why? Because we draw a dashed line through x = -1/2 = -0.5 on the horizontal number line (aka x axis). Then we shade to the right of this dashed line. The shaded region represents all points that make the inequality true. For example, the point (0,0) is in the shaded region. It has an x coordinate of x = 0 which is larger than -1/2

Side note: the dashed line says "points on this boundary do not count as solutions". So any point with an x coordinate of -1/2 does not count.  

7 0
4 years ago
8 - 1/3 x = 16 please help
Len [333]

Hope you can understand the handwriting :)

7 0
3 years ago
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