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ludmilkaskok [199]
3 years ago
15

Refer to matrix A and identify the matrix element a31.

Mathematics
1 answer:
Blizzard [7]3 years ago
5 0
<h3>Answer:  D) 7</h3>

===================================================

Explanation:

a31 means "the value in the third row, first column". That value is 7

As another example, a22 = 3 since 3 is in the second row, second column.

Another example: a12 = -1 because we're in the first row and second column.

This is a 3x2 matrix due to it having 3 rows and 2 columns.

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If their is 300 unicorns and 200 dragons and 50 dragons fly away then 30 unicorns walk away how many are of each left?
Lilit [14]

Answer:

If 30 unicorns out of 300 walk away then it will be 300-30=270 unicorns left.

If 50 dragons fly away out of 200 then it will be 200-50=150.

Therefore there are 270 unicorns and 150 dragons left.

I hope this helps you...Thank you...

7 0
3 years ago
What 38x28 becase i d k
nlexa [21]

Answer: 1,064

Explanation:

38x28=

5 0
2 years ago
Read 2 more answers
Which of the statements below is true for the following set of numbers 20,5,50,95,75,60
alina1380 [7]

Answer:

they are all multiples of 5

Step-by-step explanation:

when you count by five you will meet each number =D

3 0
3 years ago
Out of a group of 120 students that were surveyed about winter sports 28 said they ski 53 said they snowboard Sixteen of the stu
hjlf

Answer:

P ( snowboard I ski)​ = 0.5714

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Ski

Event B: Snowboard.

28 out of 120 students ski:

This means that P(A) = \frac{28}{120} = 0.2333

16 out of 120 do both:

This means that P(A \cap B) = \frac{16}{120} = 0.1333

P ( snowboard I ski)​

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1333}{0.2333} = 0.5714

So

P ( snowboard I ski)​ = 0.5714

7 0
3 years ago
Read 2 more answers
I need the answer for this question please
inna [77]

The sum of √30 + √50 lies between 12 and 13.

<h3>What is the sum of the numbers?</h3>

The square root of a number can be described as number that when multiplied with itself yields that number.

√30 = 5.48

√50 = 7.07

5.48 + 7.07 = 12.55

The consecutive integers are 12 and 13

To learn more about how to calculate square root, please check: brainly.com/question/8085738

#SPJ1

7 0
2 years ago
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