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4 years ago

Help pls What is the rref of the identity matrix? Thanks!

1 answer:

5 0

The rref of the identity matrix is the identity matrix because the identity matrix itself is already in Row Reduced Echelon Form.

Thus, no elementary row operations are required to change the identity matrix into Row Reduced Echelon Form.

Have an awesome day! :)

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Plz help me with this question

irga5000 [103]

Answer:

122

Step-by-step explanation:

$x^6+y^2$

Plug in 1 for x and 11 for y

$=1^6+11^2$

1 to the power of any number will always equal 1

$=1+11^2\\=1+121\\=122$

I hope this helps!

7 0

3 years ago

What would the domain and range of this graph be? In interval form, if it can be.

skad [1K]

Answer:

Step-by-step explanation:

Domain is the x values. The interval of x-values that the function encompasses are from 0 inclusive to 7 exclusive. In interval notation that is [0, 7). The range is the y values. The interval of y-values that the function encompasses are from what looks like -2 to 4. In interval notation that is [-2, 4]. The domain goes from the lowest x-value to the highest; the range goes from the lowest y-value to the highest.

6 0

3 years ago

Solve the equation thanks

sashaice [31]

X=-2y+3
Is your answer hope this helps

4 0

3 years ago

Bamboo Plant A is 1.2 meters tall and growing at a rate of 0.45 meter per day. Bamboo Plant B is 0.85 meter tall and growing 0.5

pashok25 [27]

Answer:

7 days

Step-by-step explanation:

Bamboo plant A = 1.2 + 0.45d

Bamboo plant B = 0.85 + 0.5d

Where,

d = number of days

Equate the two growth

Bamboo plant A = Bamboo plant B

1.2 + 0.45d = 0.85 + 0.5d

Collect like terms

1.2 - 0.85 = 0.5d - 0.45d

0.35 = 0.05d

Divide both sides by 0.05

d = 0.35 / 0.05

d = 7 days

Plant B be taller than Plant A after 7 days

3 0

3 years ago

What is |-8| ? -16

olga nikolaevna [1]

Answer:

Those little "sticks" are called absolute value.

For example, the absolute value of 2 is 2, and the absolute value of −2 is also 2. The absolute value of a number may be thought of as its distance from zero along real number line.

Thus, it doesn't matter if the number is positive or negative. As it only counts its distance from 0, on the number line.

I hope it helps.

5 0

2 years ago

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