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irga5000 [103]
4 years ago
13

4. Find the circumference of a circle with radius 20 ft., rounded to the nearest tenth

Mathematics
1 answer:
Reil [10]4 years ago
4 0

Answer:

C= 125.6

Step-by-step explanation:

The formula to find the circumference is :

c = 2\pi \: r

So the equation is:

c = 2(3.14  \times 20)

Simplify:

c = 2 \times 62.80

Simplify:

c = 125.6

And it asks to round to the nearest tenth, but it is already rounded to the nearest tenth.

Hope this helps : )

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The price of mailing a small package is $0.32 for the first ounce and $0.21 for an additional ounce. Simone paid $1.16 to mail h
patriot [66]
<h3>The weight of small package is 5 ounces</h3>

<u><em>Solution:</em></u>

The price of mailing a small package is $0.32 for the first ounce

$0.21 for an additional ounce

Let "x" be the additional ounces

From given,

Simone paid $1.16 to mail her package

First ounce = $ 0.32

Therefore,

Money paid for additional ounces = 1.16 - 0.32 = $ 0.84

Given that,

$0.21 for an additional ounce

Therefore,

\text{ Weight of additional ounces } = \frac{0.84}{0.21} = 4

Thus weight of package = first ounce + 4 additional ounces = 5 ounces

Thus the weight of small package is 5 ounces

3 0
3 years ago
SOMEONE PLZ HELP ME WITH 10 and 8!!!!!
Allisa [31]

Answer:

10.23.75^{o}

8. 34.76^{o}

Step-by-step explanation:

10. each step is 36, so i added it twice to get 72.

     then add 16 twice = 32

      this gives us two sides to our triangle.

      We can now use tan since we know opp and adj

      tan 32/72 = .44

      arctan = 23.75

8. since we again know the opposite and adjacent sides to the angle e are trying to find we can use tan again.

  tan 12.5/18 = .694

  arctan= 34.76

5 0
3 years ago
How do you find the missing base of an exponent? Example:<br><img src="https://tex.z-dn.net/?f=%20%20%7B%3F%7D%5E%7B3%20%7D%20%2
iVinArrow [24]
Well ? Multiplied by it self would be the answer so ?=5
7 0
3 years ago
One eidtion of alices adventures in wonderland has 352 pages. how many 4's were used in the page numbers?
aalyn [17]
In the first 100 pages  there  are 10 pages with numbers 40-49 ( that is total of 11 4's) and  another 4 in the units, 10's , 20's, .... 90's ( not including 40's) That is  total of 9 4's.

So in first 100 pages there are 20 4's.

therefore there are  20 4's  on pages 101-200  and another 20 4's on pages 201-300.

On pages 301 to 352  there are 15 4's.

answer is  3*20 + 15  = 75.

4 0
3 years ago
Use substitution to write an equivalent quadratic equation.<br> (3x + 2)2 + 7(3x + 2) – 8 = 0
ANEK [815]
Let z = 3x+2. Then, by substitution, your equation is
.. z^2 +7z -8 = 0

_____
This equation can be factored as
.. (z +8)(z -1) = 0
.. x = -8 or +1
Then
.. 3x +2 = -8 or +1
.. 3x = -10 or -1
.. x = -10/3 or -1/3

6 0
3 years ago
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