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kupik [55]
3 years ago
12

Find the area of the circle.Use 3.14 for TT.d = 12 ftA = [?] ft2A=1tr2​

Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0

Answer:

A = 113.04 ft^2

Step-by-step explanation:

We need the radius to find the area of a circle

d = 2*r

12 =2*r

6 =r

A = pi r^2

A = 3.14 (6)^2

A = 113.04 ft^2

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Marty is taking piano lessons. She is going to practice every afternoon. The 1st week she practiced for 11 minutes each day. The
defon

Answer:

m=7w+4

Step-by-step explanation:

<u>Linear Modeling</u>

It consist is setting up a linear relationship between two variables, given some experimental data. Only 2 points are needed to set up the equation of a line, but if more than 2 points are used, then the result should use statistical approaches like linear regression to find the best-fit line.

For the question at hand, Marty practices his piano lessons 11 minutes the week #1. It provides the first point (1,11). He practices 25 minutes per day on the third week. It gives us another point (3,25). This is enough to find the equation of a line. The general formula for a line, having two points (m1,w1) (m2,w2) is

\displaystyle m-m_1=\frac{m_2-m_1}{w_2-w_1}(w-w_1)

Let's plug in our values

\displaystyle m-11=\frac{25-11}{3-1}(w-1)

Simplifying:

m-11=7w-7

\boxed{m=7w+4}

3 0
3 years ago
Niko Bought 4 stamps each week for 3 weeks. He wants to put 6stamps on each page of his album. How many pages will niko use
MaRussiya [10]
<span>Niko Bought 4 stamps each week for 3 weeks. He wants to put 6stamps on each page of his album. How many pages will niko use. 2</span>

4x3=12
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3 years ago
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Ohio's license plates have 4 letters followed by 3 numbers. If the same number CANNOT be repeated, how many license plates can b
spin [16.1K]

Answer:

175,760, 000 plates

Step-by-step explanation:

There are 3 spots where there are 26 choices each

(=26^3)

and 4 spots where there are 10 choices each (the digits 0 through 9, =10^4). This gives:

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Hope this helps!

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Whats 18 over 50 simplified
Harlamova29_29 [7]
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Which of the following is a solution of x2 + 2x + 8? (1 point)
Mrrafil [7]

<u>Answer</u>

−1 + i times the square root of 7


<u>Explanation</u>

x² + 2x + 8

I will use the complete square method to find the value of x.

x² + 2x + 8

x² + 2x = -8

x² + 2x + (2/2)² = -8 + (2/2)²

x² + 2x + 1 = -7

(x + 1)² = -7

x + 1 = √(-7)

x = √(-7) - 1

    = i√7 - 1

   = -1 + i√7

<em>−1 + i times the square root of 7 </em>


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