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Naya [18.7K]
3 years ago
5

The formula gives the height of an object in free fall at time t and acceleration g.

Mathematics
1 answer:
ale4655 [162]3 years ago
3 0

t must equal √2h/g but I don't see that in the choices above

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Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference
ollegr [7]

Answer: 1unit.

Step-by-step explanation:

Area of the rectangle

A = length × width

Since the area = 20 and the width is x and the length is x + 1.

We now substitute for the values in the above formula and solve for x

20 = x × x + 1

20 = x( x + 1 ), we now open

20 = x² + x , then re arrange.

x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means

Here, I am going to solve using factorization by grouping

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x( x + 5 ) - 4( x + 5 ) = 0

( x + 5 )( x - 4 ). = 0

Therefore, the solution for x will be

x = -5 or 4, but x can not be -5 ( negative), so x = 4.

Now the difference between width and the length can easily be calculated from the above,

Width = 4 (x) , and length = 5 (4 + 1),

Now difference will be

5 - 4 = 1unit.

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3 years ago
What is the slope of the line through (-1, 2) and (-3,-2)?
Burka [1]

The answer of the slope or Gradient of the line is 2

8 0
2 years ago
Round to the nearst hundredh 58.635
Aleonysh [2.5K]
58.635 rounded to the nearest hundreth is:

58.6 because 3 is less than 5

Hope I Helped You!!!
5 0
3 years ago
Pls help me with this question. Thank you!
Masja [62]
All I can help with is that the very bottom left angle is 60 degrees
6 0
3 years ago
Six more than five times a number (x) is at least twenty-one
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The answer to this would be 5x+6>=21. Just wanted points :P
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3 years ago
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