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3 years ago

Write a two-column proof

Mathematics

1 answer:

miskamm [114]3 years ago

6 0

I hope this helps you

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Can someone please help me on number 19

Sloan [31]

Answer:

$12\pi x^{2} +21\pi x+9\pi$

Step-by-step explanation:

$V=Bh=\pi r^{2} h = \pi (4x+3)^{2} (3x+3) = \pi (12x^{2}+12x+9x+9 )=12\pi x^{2} +21\pi x+9\pi$

5 0

3 years ago

How do you do this math 18-0.4 in long subtraction

Gwar [14]

18.0 1
- 0.4 17.0
_____ - 0.4
-------> ____
17.6

5 0

3 years ago

Read 2 more answers

Find the midpoint of the line segment joining points A and B. A(2, - 5); B(4,1)

Nookie1986 [14]

Answer:

(3, -2)

Step-by-step explanation:

Find the midpoint coordinates (x, y) of points A(2, - 5) and B(4, 1)

x-coordinate of the midpoint is (2+4)/2 = 6/2= 3

y-coordinate of the midpoint is (-5+1)/2 = -4/2= -2

The mid point coordinates are (3, -2)

6 0

3 years ago

A rectangular box has length 20cm, width 6cm and height 4cm. find how many cubes of size 2cm that will fit into the box.

Papessa [141]

Answer:

$\boxed{\pink{\sf The \ number \ of \ cubes \ that \ can \ be \ fitted \ is 60 .}}$

Step-by-step explanation:

Given dimensions of the box = 20cm × 6cm × 4cm .

Dimension of the cube = 2cm × 2cm × 2cm .

Therefore the number of cubes that can be fitted into the box will be equal to the Volume of box divided by the Volume of the cube. So ,

$\boxed{\red{\bf \implies No. \ of \ cubes \ = \dfrac{Volume \ of \ box}{Volume \ of \ cube }}}$

$\bf \implies n_{cubes} = \dfrac{20cm \times 6cm \times 4cm .}{2cm \times 2cm \times 2cm } \\\\\bf\implies n_{cubes} = 10 \ times 3cm \times 2cm \\\\\implies \boxed{\bf n_{cubes}= 60 }$

<h3>Hence the number of cubes that can be fitted in the box is 60 .</h3>

6 0

3 years ago

Derivative of this function Y= -7X³ -8X² +6X +3

zaharov [31]

In general, the derivative of a single term Ax^(n) is A n x^(n-1) .

And the derivative of a sum of many terms is the sum of the derivatives
of the individual terms.

Using these two rules, the derivative (with respect to 'x') of the expression
in the question is . . .

 Y' = -21x² - 16x + 6

7 0

3 years ago