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Alinara [238K]
3 years ago
5

A rectangle has a height of 3 and a width of 3x^2 + 4x.​

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:

Step-by-step explanation:

Zolol [24]3 years ago
5 0

Answer:

9x^2+12x

Step-by-step explanation:

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Find the area of a floor that measures 12.75 ft. by 10.5 ft. 133.875 11.775 11.875 132.875
kompoz [17]
133.875
This is the answer because we are given the length and the width of this floor. We are assuming it is a regular rectangle.
So we just multiply the length and the width which is 12.74 x 10.5, which comes out to 133.875
4 0
3 years ago
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What is the surface area of a circle that has a diameter of 14 inches
Anna007 [38]
The area of any circle is        (pi) · (radius)² .

The radius is 1/2 of the diameter.

For your circle, the radius is 1/2 of 14 inches  =  7 inches,
and the area is

                            (pi) · (7 inches)²

                         = (pi) · (49 square inches)

                         =      153.9 square inches  (rounded)
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3 years ago
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3 0
2 years ago
Find dy/dx if y=(4x^2-5x)^8
musickatia [10]

dy/dx = 8(8x - 5)(4x² - 5x )^ 7

differentiate using the ' chain rule '

dy/dx = 8(4x² - 5x)^ 7 × d/dx (4x² - 5x)

         = 8(4x² - 5x)^ 7  × (8x - 5)

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6 0
3 years ago
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HELP ASAP ALL THREE PLEASE 1. if a cyclic alkene has 12 carbon atoms, how many hydrogen atoms does it have 2.if a cyclic alkene
Marina CMI [18]

Answer:

1. 24

2. 6

3. No

Step-by-step explanation:

The formula for cyclic alkene is C^{n} H^{2n}, so if it has 12 carbon atoms, it will have double the amount of hydrogen atoms, therefore, 24 hydrogen atoms.

The same works in reverse. If we have 12 hydrogen atoms in this, then there will be half the amount of carbon atoms, therefore 6.

Since the relationship between Carbon and Hydrogen here is double and half, odd numbers can't be divided by 2 and end up with a whole number, so an odd number of hydrogen atoms is not possible.

Hope this helped!

5 0
3 years ago
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