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sergejj [24]
3 years ago
6

What is the measure of <4 and why

Mathematics
1 answer:
Debora [2.8K]3 years ago
8 0

Answer:

o, m∠4 = 180° – 150° or 30°. 180° – 150° or 30°. given angle measure.

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A square matrix A is said to be idempotent iff A2 = A. (i) Show that if A is idempotent, then so is I − A. (ii) Show that if A i
muminat

Answer:

Step-by-step explanation:

Given that A is a square matrix and A is idempotent

A^2 = A

Consider I-A

i) (I-A)^2 = (I-A).(I-A)\\= I^2 -2A.I+A^2\\= I-2A+A\\=I-A

It follows that I-A is also idempotent

ii) Consider the matrix 2A-I

(2A-I).(2A-I)=\\4A^2-4AI+I^2\\= 4A-4A+I\\=I

So it follows that 2A-I matrix is its own inverse.

7 0
3 years ago
The what value complete the square for the expression x squared plus 16x
Troyanec [42]
Take the coefficient of the x-term, half it, then square that. add this to both sides

x² + 16x. coefficient of x is 16. half of 16 is 8. 8²=64

x² + 16x + 64 =64. this is your answer but to continue

x² + 16x + 64 = 64
(x+8)² = 64
x+8 = ✓64
x+ 8 = ±8
x = 0 or -16
6 0
3 years ago
Solve the following equations for x -11=3-7(x-1)
lesya692 [45]

Answer:

x = 21/8

Step-by-step explanation:

Step 1: Write equation

x - 11 = 3 - 7(x - 1)

Step 2: Solve for <em>x</em>

<u>Distribute -7:</u> x - 11 = 3 - 7x + 7

<u>Combine like terms:</u> x - 11 = 10 - 7x

<u>Add 7x on both sides:</u> 8x - 11 = 10

<u>Add 11 on both sides:</u> 8x = 21

<u>Divide both sides by 8:</u> x = 21/8

3 0
3 years ago
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If 16 ink pens cost $1.92, then ___<br> pens cost $1.32.
Ira Lisetskai [31]

Answer: 3

Step-by-step explanation: 2+2-1=3

7 0
2 years ago
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Hideki is collecting pennies . Each month in may, june, and july he put 200 pennies in a jug . He put 300 pennies in th jug in A
viktelen [127]
1200 might be your answer
6 0
3 years ago
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