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trasher [3.6K]
3 years ago
5

Simplify this equation, also what is the sign beside 150 and what does it do

Mathematics
1 answer:
Solnce55 [7]3 years ago
6 0

Answer:

<h2><em><u>hope </u></em><em><u>it </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>see </u></em><em><u>the </u></em><em><u>attachment </u></em><em><u>for </u></em><em><u>further </u></em><em><u>information </u></em><em><u>✌</u></em><em><u>✌</u></em><em><u>✌</u></em><em><u>✌</u></em><em><u>✌</u></em></h2>

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PLEASE HELP I'm having trouble ​
Anastasy [175]

Answer:

c_{11}=56.1

c_{12}=12.1

c_{13}=236

Step-by-step explanation:

  • The product of two matrices X_{m\times{n}} and  Y_{n\times{r}} equals a matrix M_{m\times{r}}, where the first element of the subscript represents the amount of files of the matrix and the second element represents the amount of columns of the matrix.
  • Then, in this case  A_{1\times{3}}   B_{3\times{3}}, therefore, its product will result a matrix C_{1\times{3}}.
  • Because C matrix is going to have an only file and three columns, we now have to find the values of the elements in each column, based on the elements of A and B.
  • Commonly, to obtain the values of the resulting matrix, we just have to multiply each file of the first matrix by each column of the second matrix and sum, as follows:
  1. c_{11}=77\times1.2+39\times2.2-33\times3.7=56.1
  2. c_{12}=77\times1.4+39\times1.1-33\times4.2=12.1
  3. c_{13}=77\times3.1+39\times5.6-33\times6.7=236
  • Finally, C matrix is \begin{pmatrix}\56.1 & 12.1& 236\end{pmatrix}
4 0
2 years ago
23/5+99/5-5/5 <br> Help LOL kk want random points
mojhsa [17]

Answer:

23.4

Step-by-step explanation:

23/5+99/5-5/5= 23.4

hope this helps....

5 0
2 years ago
Read 2 more answers
A randomly selected sample of n =51 men in Brazil had an average lifespan of 59 years. The standard deviation was 10 years. Calc
Aloiza [94]

Answer:

59-2.40\frac{10}{\sqrt{51}}=55.639    

59+ 2.40\frac{10}{\sqrt{51}}=62.361    

The 98% confidence interval would be given by (55.639;62.361)    

Step-by-step explanation:

Information given

\bar X= 59 represent the sample mean

s= 10 represent the sample deviation

n= 51 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=51-1=50

The Confidence is 0.98 or 98%, the significance would be \alpha=0.02 and \alpha/2 =0.01,and the critical value would be t_{\alpha/2}=2.40

And replacing we got:

59-2.40\frac{10}{\sqrt{51}}=55.639    

59+ 2.40\frac{10}{\sqrt{51}}=62.361    

The 98% confidence interval would be given by (55.639;62.361)    

3 0
3 years ago
The base of a regular pyramid is a hexagon
Readme [11.4K]

Answer:

Below in bold.

Step-by-step explanation:

The hexagon is made up of 6 equilateral triangles.

So the Base = 12 cm.

Height a = 12 cos 30 = 10.392 cm

So area of 1 triangle =  1/2 * 12 * 10.392 cm^2

- and total area =  6 *  1/2 * 12 * 10.392

= 36 * 10.392

= 374.11 cm^2 to the nearest hundredth.

7 0
1 year ago
Darren is 30 and is debating whether he should start investing $100 a month now for retirement at 60 or if he should wait until
faltersainse [42]
Hi there
The formula of the future value of annuity due because you invest now means you invest at the beginning of each month

Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]×(1+r/k)
The first option you invest 100 at the beginning of each month for 30 years (60-30) therefore
Fv=100×((((1+0.1÷12)^(12×30)
−1)÷(0.1÷12))×(1+0.1÷12))
=227,932.53...is higher

The second option you invest 200 at the beginning of each month for 20 years (60-40) therefore
Fv=200×((((1+0.1÷12)^(12×20)
−1)÷(0.1÷12))×(1+0.1÷12))
=153,139.38...is lower

So I would choose the first option which is invest 100 due to higher amount

Hope it helps

7 0
3 years ago
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