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son4ous [18]
3 years ago
12

Write an expression to determine (represent) the ratio of the circle's circumference to its radius.

Mathematics
1 answer:
Agata [3.3K]3 years ago
4 0

Answer:

\frac{C}{r} = 2π

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

Divide both sides by r

\frac{C}{r} = 2π ← ratio of circumference to radius

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An online photo services charge $20 to make a photo book with 16 pages each extra page cost a dollar 75 the cost to ship the com
Alisiya [41]

Answer:

The expression to determine the total cost in dollars is y=25+0.75x.

Step-by-step explanation:

Given:

Service charge to make a photo book = $20

Cost per extra page = $0.75

Cost to ship the complete photo book = $5

We need to write expression to determine the total cost in dollars.

Solution:

Let the number of extra pages be denoted by 'x'.

Also Let the Total cost be denoted by 'y'.

Now we can say that;

Total cost will be equal to sum of Service charge to make a photo book and  Cost per extra page multiplied by number of extra pages and Cost to ship the complete photo book.

framing in equation form we get;

y=20+0.75x+5\\\\y=25+0.75x

Hence the expression to determine the total cost in dollars is y=25+0.75x.

3 0
3 years ago
Twice the difference of a number and 4 is equal to three times the sum of the number and 4.
Delvig [45]

Answer:

2(x-4)=3(x+4)

Step-by-step explanation:

that's easy.

6 0
3 years ago
Number 14 please thanks
katrin [286]
Your problem is:
$35.00 is what percentage of $437.50?

If you are given a part and the whole, and you want to know what percent the part is of the whole, divide the part by the whole and multiply by 100.

In this case, the whole is $437.50.
The part is $35.00.

35/437.5 * 100 = 8%

3 0
3 years ago
97. An elevator in a tall building goes up 7 floors, then
Komok [63]

so, start floor = x

x + 7 - 9 - 4 + 8 - 2 = 14

x = 14

the elevator started on the 14th floor.

to verify: 14 + 7 = 21 - 9 = 12 - 4 = 8 + 8 = 16 - 2 = 14

5 0
3 years ago
Find the HCF of 140,210,315
AVprozaik [17]
(On the far left, it says 140 at the top and then 5 to the left of 28)
The answer is 35, let me know if you can't read anything or have any questions. Hope this helped :)

3 0
3 years ago
Read 2 more answers
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