Which group 2A element has the largest iconic radius ?

Mathematics

2 answers:

erastova [34]3 years ago

7 0

Answer:

E.) radium on plato

Step-by-step explanation:

kipiarov [429]3 years ago

5 0

D.) Radium

Hope this helps! :)

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A line that includes the point (-4, 7) has a slope of 6. What is its equation in point-slope

aalyn [17]

Point slope formula: y-y1=m(x-x1). Answer: y-7=6(x-(-4))

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3 years ago

Will works 40 hours a week as a pharmacist. if he made 40,560 last year, how much was he paid per hour

kow [346]

19.5 apex hopes this helps

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isabel bought a shirt on sale for 35% off the regular price. the sale price was $27.63. what was the regular price? write an equ

ryzh [129]

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4 years ago

Simplify the expression 6C5.<br> a.6.<br> b. 24<br> C. 30<br> d. 720

Lana71 [14]

<h3>Answer: A) 6</h3>

=====================================================

Explanation:

Plug n = 6 and r = 5 into the nCr combination formula

$_n C _r = \frac{n!}{r!*(n-r)!}\\\\_6 C _5 = \frac{6!}{5!*(6-5)!}\\\\_6 C _5 = \frac{6!}{5!*1!}\\\\_6 C _5 = \frac{6*5*4*3*2*1}{5*4*3*2*1*1}\\\\_6 C _5 = \frac{720}{120}\\\\_6 C _5 = 6\\\\$

Or you could use the shortcut

$_n C _{n-1} = n\\\\$

Yet another path you could take is to use Pascal's Triangle. Locate the row that starts with 1,6,... and then locate the second to last item. That value in the triangle is 6.

A real world interpretation is to consider having 6 people and you are selecting 5 of them to form a group where order doesn't matter. How many ways are there to do this? Well there are 6 such ways because there are 6 ways to leave someone out of the group.

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2 years ago

A fence must be built to enclose a rectangular area of 20 comma 000 ftsquared. fencing material costs $ 2 per foot for the two s

Maslowich

The first thing we should do is write the functions.
For the area we have:
A = w * h = 20000 feet ^ 2
The price is:
Cost = (4 * 2 * h + 2 * 2 * w)
Substitute for h ::
C (w) = (4 * 2 * (20,000 / w) + 2 * 2w)
Rewrite we have:
C (w) = 160,000 / w + 4w
Take the derivative:
C '(w) = 160000 (-1 / w ^ 2) + 4
We equal zero and clear w:
0 = 160000 (-1 / w ^ 2) + 4
160000 / w ^ 2 = 4
w ^ 2 = 40000
w = 200 (approximately)
width = 200 ft; so cost is 2 * ($ 4) 200 = $ 1600
height = 20000/200 = 100 ft; so cost is 2 ($ 2) 100 = $ 400
Total cost = $ 2000
Answer:
The cost of the least expensive fence is:
Total cost = $ 2000

3 0

4 years ago