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SashulF [63]
3 years ago
9

Why do you need to find common denominators simplify your equation

Mathematics
1 answer:
Daniel [21]3 years ago
4 0
Finding common denominators allows you to more easily get your answer for the problem.  fractions are complex as it is  if you have a denominator of 16 and 4 your immediate reaction would be to just subtract the process and answer would be completely wrong.
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1. An airplane moves at a constant speed of 120 miles per hour for 3 hours. How far does it go?d=rt Time Distance 1 hour 120 mil
Feliz [49]

Distance = speed rate x time

Speed rate = 120 miles per hour

Time = 3 hours

Replacing:

D = 120 mph x 3 h = 360 miles

5 0
1 year ago
5. The dimensions, in inches, of a shipping box at We Ship 4 You can be expressed as width x, length x + 5, and height 3x - 1. T
meriva
The volume of a cuboid is given by length × width × height

We have:

Volume = 7.6 ft³
Height = 3x - 1
Length = x + 5
Width = x

Substituting these into the formula, we have:

7.6 = (3x - 1) (x + 5) (x)
7.6 = [3x² + 15x - x - 5] (x)
7.6 = [3x² + 14x - 5](x)
7.6 = 3x³ + 14x² - 5x
0 = 3x³ + 14x² - 5x - 7.6

Drawing the graph is one way of finding the solution (refer to the graph below):

We have three solutions (where the curve crosses the x-axis):
x = -4.9
x = -0.6
x = 0.8

Putting these solutions back into the context, since we are looking for the value of x which is part of measurement of length, we cannot have negative value, so we will take the value of x = 0.8 ft

Converting  0.8 ft into inches = 0.8 × 12 inches = 9.6 inches

Answer: x = 9.6 inches

7 0
3 years ago
HEY!!! YES, YOU!!! WANNA HELP OUT A FELLOW SUFFERING VICTIM OF MATH? NOWS YOUR CHANCE!!! PLEASE HELP! 10 PTS!!!
rosijanka [135]

Answer:

16 cm

Step-by-step explanation:

Suppose that x is the original width. If that original width is enlarged by a scale factor 5/2 that means that x is multiplied by 5/2 and after that multiplication we obtained new width, 40 cm.

Therefore,

x*(5/2) = 40

We multiply the equation by 2 and obtain:

x*5 = 40*2

5x = 80

Now we divide the equation by 5 and obtain:

x = 80/5

x = 16

We obtained that x, the original width was 16 cm

5 0
3 years ago
Solve 4 2 + 7) = 16.
Karolina [17]

<u><em>Answer:</em></u>

<u><em>4(2+7)=16</em></u>

<u><em>The answer is:</em></u>

<u><em>36=16</em></u>

<u><em>or</em></u>

<u><em>A</em></u>

<u><em>Hope this helps:3</em></u>

<u><em /></u>

4 0
3 years ago
In a survey of 2,900 people who owned a certain type of​ car, 870 said they would buy that type of car, again. What percent of t
Murrr4er [49]

Answer:

30%

Step-by-step explanation:

7 0
3 years ago
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