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Alexandra [31]
3 years ago
7

What numbers are perfect numbers

Mathematics
1 answer:
alekssr [168]3 years ago
5 0
A perfect number is a number where the sum of its divisors is equal to the number.

For example 6: 1 + 2 + 3 = 6

Another example is 28: 1 + 2 + 4 + 7 + 14 = 28

Here is a short list of perfect numbers: 6, 28, 496, 8128, <span>33550336, and the numbers get way bigger as we go on.</span>

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NEED HELP FAST!!!
faust18 [17]

In order to solve the formula

C=\pi d

in terms of d, you simply have to divide both sides by pi:

d=\dfrac{C}{\pi}

The total height of the earring is the sum of the diameters of the circles. Given their circumferences, the diameters are

d_1=\dfrac{6}{\pi},\quad d_2=\dfrac{8}{\pi}

So, the total height is

h=d_1+d_2=\dfrac{6}{\pi}+\dfrac{8}{\pi}=\dfrac{14}{\pi}

6 0
3 years ago
Parking in a student lot costs $2 for the first half hour and $1.75 for each hour thereafter. A partial hour is charged the same
Masteriza [31]

An easier way to think of this problem is just keep adding for each additional hour: 


0.5 hours --> $2 

1.5 hrs --> $3.75 

2.5 hrs --> $5.50 

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3 0
3 years ago
Read 2 more answers
ASAP NO WORK JUST ANSWER
Hunter-Best [27]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
What is the weight of a square on this hanger if a triangle weighs 3 grams?<br>​
Sedbober [7]

Answer:

it would be 36grms

Step-by-step explanation:

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count how many sides in a cube

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3 0
3 years ago
Someone help me plzz
galina1969 [7]
Answer: y=5x+3
Step by step explanation:
Perpendicular meaning that the product of the slope/gradient is -1 hence ...
-1/5 * x = -1
x = -1/-1/5
x = 5
The equation perpendicular to y=-1/5x-3 is y=5x-c
Now it contains the points (1,2)
x variable is 1 and y variable is 2 plug them into the line equation
2=5(1)-c
2=5-c
2-5=-c
-3=-c divide by -1
3=c
Hence the perpendicular equation is y=5x+3
Hopefully it’s correct :)
5 0
2 years ago
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