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il63 [147K]
3 years ago
10

Find the circumference of a circle with a radius of 2 inches. Give an exact answer.

Mathematics
1 answer:
pychu [463]3 years ago
4 0

Answer:C=2πr=2·π·2≈12.56637in

Step-by-step explanation:

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The Comparing the Shape, Center, and Spread of Data Sets and more
MatroZZZ [7]

Answer:

8

Step-by-step explanation:

7 0
3 years ago
Write an explicit formula for an, the nth term of the sequence 4, -24, 144, ....
nadezda [96]

Answer:

Tn = 4(-6)^n-1

Step-by-step explanation:

Write an explicit formula for an, the nth term of the sequence 4, -24, 144, ....

The sequence is a geometric sequence

Tn = ar^n-1

a is the first term

a = 4

r = -24/4 =144/-24

r = -6

Substitute

Tn = 4(-6)^n-1

3 0
3 years ago
There are 24 pens in a desk drawer. The pens are either red or blue. The ratio of red pens to blue pens is 5:1. How many pens ar
Flura [38]

Answer:

The number of red pens is 20.

The number of blue pens is 4.

Step-by-step explanation:

We are given that, the ratio of number of red pens to the number of blue pens is 5 : 1.

∴ Let us assume that the number of red pens be 5<em>x</em> and number of blue pens be <em>x</em>.

Total number of pens in the desk drawer = 24

Now, according to question :

Number of red pens + Number of blue pens = 24

⇒5<em>x</em> + <em>x</em> = 24

⇒6<em>x</em> = 24

⇒x=\frac{24}{6}=4

So, number of red pens in the drawer = 5<em>x</em> = 5 × 4 = 20

Number of blue pens in the drawer = <em>x</em> = 4

6 0
3 years ago
Please help me with the following questions. Thanks!
Natali5045456 [20]

Answer:

The answer to your questions  are in bold

Step-by-step explanation:

a)  

 C = \left[\begin{array}{ccc}-6&6\\-2&4\\\end{array}\right]

    = -24 + 12

   = -12

b)  -1   7          -4   -1                   -1  - 4        7 - 1               - 5      6

    -2 -6          -8    8      =          -2 - 8       -6 + 8              -10      2

     2 -3           2   -7                  2 + 2        -3 - 7               4       -10

   -1   10         -6     5                 -1 - 6         10 + 5              -7       15

5 0
3 years ago
The point (0, 0) is a solution to which of these inequalities? A. Y - 7 &lt; 2 x - 6 B. Y - 6 &lt; 2 x - 7 C. Y + 7 &lt; 2 x - 6
SCORPION-xisa [38]

Answer:

  A.  y - 7 < 2 x - 6

Step-by-step explanation:

When you put the given values into the inequalities, you get ...

  A: -7 < -6 . . . . true

  B: -6 < -7 . . . . false

  C: 7 < -6 . . . . .false

  D: 7 < 6 . . . . . false

4 0
3 years ago
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