3a+2(b+5a) plz answer this <br> I really tryied but noap I keep on get in it wrong

.54545454545454545 goes on for ever whats it as a fraction

weqwewe [10]

If you want it estimated it would be .55 which would be 55/100 which would simplify to 11/20

7 0

3 years ago

Write an equation of the graph:

katrin [286]

1. To translate to the left, add to x.
The equation is: y = |x + 2|

2. To translate down, add to y.
The equation is: y + 2 = |x| OR y = |x| - 2 (subtract 2 from each side)

Hope this helps!

5 0

3 years ago

Suppose the radius of a circle is7. What is its area?

Lena [83]

Area = πr^2
area = π(7)^2
area = 49π

5 0

3 years ago

PLEASE ANSWER QUICKLY

sammy [17]

By applying the definition of product between two <em>square</em> matrices, we find that $\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}1&2\\3&6\end{array}\right] \cdot \left[\begin{array}{cc}1&2\\3&6\end{array}\right]$ is equal to the matrix $\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}7&14\\21&42\end{array}\right]$ . (Correct choice: D)

<h3>What is the product of two square matrices</h3>

In this question we must use the definition of product between two <em>square</em> matrices to determine the resulting construction:

$\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}1&2\\3&6\end{array}\right] \cdot \left[\begin{array}{cc}1&2\\3&6\end{array}\right]$

$\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}7&14\\21&42\end{array}\right]$

By applying the definition of product between two <em>square</em> matrices, we find that $\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}1&2\\3&6\end{array}\right] \cdot \left[\begin{array}{cc}1&2\\3&6\end{array}\right]$ is equal to the matrix $\vec A \,\cdot \,\vec A = \left[\begin{array}{cc}7&14\\21&42\end{array}\right]$ .

To learn more on matrices: brainly.com/question/11367104

#SPJ1

6 0

2 years ago

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

a_sh-v [17]

Answer: A. 0.4899 B. 14

Step-by-step explanation:

If X = random variable

then, the standard deviation of the sampling distribution of X = $\dfrac{\sigma}{\sqrt{n}}$

A.

GIven: $\sigma= 1.2, \n= 6$

The standard deviation of the sampling distribution of X = $\dfrac{1.2}{\sqrt{6}}=0.4899$

B. Let n be the sample size,

$0.325=\dfrac{1.2}{\sqrt{n}}\\\\\Rightarrow\ \sqrt{n}=\dfrac{1.2}{0.325}\\\\\Rightarrow\ \sqrt{n}=3.69230769231\\\\\Rightarrow\ n= (3.69230769231)^2=13.6331360947\approx 14$

Hence, the required sample size = 14

3 0

3 years ago

3a+2(b+5a) plz answer this I really tryied but noap I keep on get in it wrong