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vaieri [72.5K]
3 years ago
5

Multiply the binomials (4x+2)(5x+1) *

Mathematics
1 answer:
strojnjashka [21]3 years ago
3 0
The answer is 20x^2 + 14x + 2
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Pls help
KATRIN_1 [288]

Answer:

169.04 in² (nearest hundredth)

Step-by-step explanation:

Surface area of a cone = \pir² + \pirl

(where r = radius of the base and l = slant height)

Given slant height l = 10 and surface area = 188.5

Surface area  = \pir² + \pirl

188.5 = \pir² + 10\pir

\pir² + 10\pir - 188.5 = 0

r = \frac{-10\pi +\sqrt{(10\pi )^2-(4\times\pi \times-188.5)} }{2\pi } = 4.219621117...

Volume of a cone = (1/3)\pir²h

(where r = radius of the base and h = height)

We need to find an expression for h in terms of l using Pythagoras' Theorem a² + b² = c², where a = radius, b = height and c = slant height

r² + h² = l²

h² = l² - r²

h = √(l² - r²)

Therefore, substituting found expression for h:

volume of a cone = (1/3)\pir²√(l² - r²)

Given slant height l = 10 and r = 4.219621117...

volume = 169.0431969... = 169.04 in² (nearest hundredth)

5 0
3 years ago
Read 2 more answers
You are in charge of planning a reunion party for your high school alumni. The food will cost $12 per person. The rental fee for
castortr0y [4]

Answer:

$3820 total, $32 per alumnus.

Step-by-step explanation:

The total cost will be 12\times120+650+730+1000=3820

Each alumnus pays \frac{3820}{120} =31\frac{5}{6}

Rounding to nearest whole number = $32 per alumnus.

5 0
2 years ago
Find the dimensions and maximum area of a rectangle, if it’s perimeter is 24 inches
Andru [333]
Perimeter = 24

triangle perimeter = 2W + 2L

24= 2W + 2L

12 = W + L

L= 12-W

AREA = W*L

AREA = (W)(12-W)
A = 12W-W^2
 
maximum occurs when you take the derivative 

d/dw=12-2w = 0 
w=6

after this i think we can say 6 * 6 = 36 is the maximum area.. not to sure, havent done a problem like this in a while

hope this helps 

or if we know what w=6 we can find L

L = 12-w which we still get 6<span />
6 0
3 years ago
Anyone can answer this
kolezko [41]

Answer:

y smaller than - 1/3

Step-by-step explanation:

.................

5 0
3 years ago
What numbers are not square or even?
muminat

Answer:

Search Results

Featured snippet from the web

Odd and even square numbers

As all even square numbers are divisible by 4, the even numbers of the form 4n + 2 are not square numbers. As all odd square numbers are of the form 4n + 1, the odd numbers of the form 4n + 3 are not square numbers.

Step-by-step explanation:

6 0
4 years ago
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