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Grace [21]
3 years ago
13

To the nearest tenth, what is the circumference of a circular pond with a radius of 14 meters? Use 3.14 for π.

Mathematics
1 answer:
Semmy [17]3 years ago
4 0
Since the formula for circumference is
2 pi r, you can multiply 28 by pi to get 87.92

Answer: 87.92
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Does the graph represent y as a function of x?​
Dimas [21]

Answer:

yes

Step-by-step explanation: i think cause the line is crossing both of the x and y axis

6 0
3 years ago
please help me answer this question! it’s due in soon. could you do this?
ASHA 777 [7]

Answer:

a:) Integer Sequences

b:) 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, ...

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the quadratic regression equation for the data set? ​ ​ ​ <br><br> PLEASEE HELP ME
Soloha48 [4]
You're trying to find constants a_0,a_1,a_2 such that \hat y=a_0+a_1\hat x+a_2{\hat x}^2. Equivalently, you're looking for the least-square solution to the following matrix equation.


\underbrace{\begin{bmatrix}1&6&6^2\\1&3&3^2\\\vdots&\vdots&\vdots\\1&9&9^2\end{bmatrix}}_{\mathbf A}\underbrace{\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}}_{\mathbf x}=\underbrace{\begin{bmatrix}100\\110\\\vdots\\70\end{bmatrix}}_{\mathbf b}

To solve \mathbf{Ax}=\mathbf b, multiply both sides by the transpose of \mathbf A, which introduces an invertible square matrix on the LHS.

\mathbf{Ax}=\mathbf b\implies\mathbf A^\top\mathbf{Ax}=\mathbf A^\top\mathbf b\implies\mathbf x=(\mathbf A^\top\mathbf A)^{-1}\mathbf A^\top\mathbf b

Computing this, you'd find that

\mathbf x=\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}\approx\begin{bmatrix}121.119\\-3.786\\-0.175\end{bmatrix}

which means the first choice is correct.
8 0
4 years ago
Jeff rode his bike around a bike trail that was 1/3 of a mile long. He rode around the trail 9 times. Write a fraction greater t
Lisa [10]
Well, \frac{1}{3} * 9 = 3  So he rode 3 miles, or if they want it as a fraction, it would be \frac{9}{3}
8 0
3 years ago
Read 2 more answers
3x -4y= -20 -x +2y =10 whats the value of y
Anni [7]
3x-4y=10
-20-x+2y=10 then -30+2y=x now plug this in the other equation:
3(-30+2y)-4y=10
-90+6y-4y=10
2y=100
y=50
4 0
3 years ago
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