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Paul [167]
2 years ago
14

What are the dimensions of the matrix?. i need help pls​

Mathematics
1 answer:
Olin [163]2 years ago
5 0

Answer:

5 X 5

Step-by-step explanation:

The dimensions of a matrix $ \implies number of rows and columns of that matrix. If it is as an $ m \times n $ (read as $m$ by $n$ it means that it has $m$ number of rows and $n$ number of columns.

In the given problem, the rows and columns are 5. So, we write it is a $ 5 \times 5 $ matrix. We call it a Square matrix, since the number of rows equals the number of columns.

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Evaluate<img src="https://tex.z-dn.net/?f=10%5E%7B6%7D" id="TexFormula1" title="10^{6}" alt="10^{6}" align="absmiddle" class="la
katovenus [111]
121,000,000,000
this is because:
10^6= 1,000,000
10^3= 1,000
121^1= 121
3 0
3 years ago
Assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the given sta
Leno4ka [110]

Let p be the proportion. Let c be the given confidence level , n be the sample size.

Given: p=0.3, n=1180, c=0.99

The formula to find the Margin of error is

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

Where z (α/2) is critical value of z.

P(Z < z) = α/2

where α/2 = (1- 0.99) /2 = 0.005

P(Z < z) = 0.005

So in z score table look for probability exactly or close to 0.005 . There is no exact 0.005 probability value in z score table. However there two close values 0.0051 and 0.0049 . It means our required 0.005 value lies between these two probability values.

The z score corresponding to 0.0051 is -2.57 and 0.0049 is -2.58. So the required z score will be average of -2.57 and -2.58

(-2.57) + (-2.58) = -5.15

-5.15/2 = -2.575

For computing margin of error consider positive z score value which is 2.575

The margin of error will be

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

= 2.575  \sqrt{\frac{0.30*(1-0.3)}{1180}}

= 2.575 * 0.0133

ME = 0.0342

The margin of error is 0.0342

7 0
2 years ago
Given the speeds of each runner below, determine who runs the fastest.
alexandr402 [8]

Answer:

Brooke

Step-by-step explanation:

We can solve this by figuring out how far each person runs a second

Stephanie runs 12 feet a second so nothing needs to be done here

Liz runs 306 feet in 38 seconds. To solve for the distance ran in 1 second we can divide (306/38)= around 8 feet

Will runes 1 mile in 491 seconds. A quick search will tell use that 1 mile is equal to 5280 feet and 5280/491 = 10.75

Brooke runs 851 feet in 1 minute or 60 seconds. 851/60 =14.18

Brooke obviously runs the furthest in one second and therefore she's the fastest runner

5 0
2 years ago
Read 2 more answers
How can i do that problem
7nadin3 [17]
Just write down the question dum dum
4 0
3 years ago
Which number sentence shows the correct placement of the decimal point in the product, based on the two factors?
aliina [53]
3.48 x 42.37 = 147.4476
7 0
2 years ago
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