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4 years ago

How to multiply 3x3 by 3x3 matrices

Mathematics

2 answers:

lyudmila [28]4 years ago

5 0

U do 3x3 then u get 9 then u do it again and u get 9 and multiply 9 by 9 and get 81

aev [14]4 years ago

3 0

Answer:

Step-by-step explanation:

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What is the answerrrrr to this

Alex_Xolod [135]

Area = 140

16 x 8 = 128

16-12 = 4

(6x4)/2 = 12

128 + 12= 140

8 0

3 years ago

Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d

Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

$n = 320$ --- the sample size

$\sigma = 2.9$ --- the standard deviation

$\bar x = 24$ --- the mean

$\alpha = 90\%$ --- the confidence level.

The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

$E = z \times \sqrt{\frac{10.24}{320}}$

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

$E = 1.645 \times \sqrt{\frac{10.24}{320}}$

$E = 1.645 \times \sqrt{0.032}$

Take square roots

$E = 1.645 \times 0.1789$

Multiply

$E = 0.2943$

Approximate

$E = 0.29$

Hence, the margin of error is 0.29

Read more about margin of error at:

brainly.com/question/14396648

5 0

2 years ago

Read 2 more answers

Use the following function rule to find f(4). f(x) = 5 + 7 x

vladimir2022 [97]

Answer:

Step-by-step explanation:

put 4 in for x and then solve

5+7(4)

5+28

6 0

3 years ago

Read 2 more answers

16) The manager of a bulk foods establishment sells a trail mix for $8 per

zaharov [31]

Answer:

The amount of peanuts to use is 5 pounds and that of cashews is 30 pounds.

Step-by-step explanation:

Let the amount of peanut to use to be x

Let the amount of cashews to use to be 35-x

Form equations to compare amounts for individual foods and the mixture

$8x+15(35-x)=35(14)\\\\8x+525-15x=490\\\\7x=35\\\\x=5\\\\$

So the pounds to be used for peanuts is 5 pounds

The pounds to be used for cashews will be 35-x= 35-5=30 pounds

Learn More

Mixtures : brainly.com/question/11497620

Keywords : Mixture

#LearnwithBrainly

5 0

4 years ago

Find the value of k so that the remainder is -5 for (3x+kx^2-7x+10) / (x+3).

Mekhanik [1.2K]

Answer:5

Step-by-step explanation:

6 0

3 years ago