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Sauron [17]
3 years ago
15

Assuming the standard definitions of addition and scalar multiplication, decide whether or not the following sets are vector spa

ces.Justify your answers by verifying that all properties of a vector space are satisfied or that at least one of the properties fails to hold.(a) The setVof all3×3lower triangular matrices (all entries above the main diagonal are zero).(b) The setVof all2×2matrices whose determinants are 0.

Mathematics
1 answer:
nadezda [96]3 years ago
4 0

Answer:

See attached pictures.

Step-by-step explanation:

See attached pictures.

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Which equation represents a line which is parallel to the x-axis?
Allushta [10]

Answer:

y = 8

Step-by-step explanation:

The equation of a line parallel to the x- axis has equation

y = c

where c is the value of the y- coordinates the line passes through.

Then

y = 8 ← is equation of line parallel to the x- axis

3 0
2 years ago
Please help me!
Alexxandr [17]

A right triangle has one leg with unknown length, the other leg with length of 5 m, and the hypotenuse with length 13 times sqrt 5 m.

We can use the Pythagorean formula to find the other leg of the right triangle.

a²+b²=c²

Where a and b are the legs of the triangle and c is the hypotenuse.

According to the given problem,

one leg: a= 5m and hypotenuse: c=13√5 m.

So, we can plug in these values in the above equation to get the value of unknown side:b. Hence,

5²+b²=(13√5)²

25 + b² = 13²*(√5)²

25 + b² = 169* 5

25+ b² = 845

25 + b² - 25 = 845 - 25

b² = 820

b =√ 820

b = √(4*205)

b = √4 *√205

b = 2√205

b= 2* 14.32

b = 28.64

So, b= 28.6 (Rounded to one decimal place)

Hence, the exact length of the unknown leg is 2√205m or 28.6 m (approximately).

5 0
3 years ago
What is the least common multiple<br> 8 and 12?
Anna35 [415]

Answer:

24

Step-by-step explanation:

8 x 3 = 24

12 x 2 = 24

so 24 is your least common multiple

5 0
2 years ago
Read 2 more answers
Which of the following is the equation of a line perpendicular to the line 7= –3/2 x + 4
frosja888 [35]

Answer:

Option c is correct !!

Step-by-step explanation:

[ Refer to the attachment ]

As y = mx + c is an equation to represent the straight line ; we equate the given line with this equation !!

Where m is slope of the line

and c is y intercept !!

We get , m = -3/2 and c = 4

Also, two perpendicular lines follows the equation :-

(m1)(m2) =  - 1

Where m nth is slope of nth line !!

8 0
3 years ago
To find the sum of 4 and -5.
Katen [24]

Answer:

-1

Step-by-step explanation:

-5 + 4 = 1

5 0
3 years ago
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