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Gwar [14]
2 years ago
13

6 is what percent of 96

Mathematics
1 answer:
sweet [91]2 years ago
4 0
0.06 times 96 equals 5.76
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For this exercise assume that all matrices are ntimesn. Each part of this exercise is an implication of the form​ "If "statement
inna [77]

Answer:

C. True; by the Invertible Matrix Theorem if the equation Ax=0 has only the trivial solution, then the matrix is invertible. Thus, A must also be row equivalent to the n x n identity matrix.

Step-by-step explanation:

The Invertible matrix Theorem is a Theorem which gives a list of equivalent conditions for an n X n matrix to have an inverse. For the sake of this question, we would look at only the conditions needed to answer the question.

  • There is an n×n matrix C such that CA=I_n.
  • There is an n×n matrix D such that AD=I_n.
  • The equation Ax=0 has only the trivial solution x=0.
  • A is row-equivalent to the n×n identity matrix I_n.
  • For each column vector b in R^n, the equation Ax=b has a unique solution.
  • The columns of A span R^n.

Therefore the statement:

If there is an n X n matrix D such that AD=​I, then there is also an n X n matrix C such that CA = I is true by the conditions for invertibility of matrix:

  • The equation Ax=0 has only the trivial solution x=0.
  • A is row-equivalent to the n×n identity matrix I_n.

The correct option is C.

5 0
3 years ago
ANSWER QUICKLYYYY 30 POINTS!!
adoni [48]

Answer:

36 , 0, 79

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Roy is purchasing dried apricots and cherries to use in his homemade trail mix, which requires at least 230 grams of fruit in to
gulaghasi [49]

Answer:

Step-by-step explanation:

If apricots is x, and each apricot weighs 5 grams, then the expression for that is 5x; if each cherry, y, weighs 2 grams, then the expression for that is 2y. If the mix Roy wants to make needs AT LEAST 230 grams of fruit, then

5x + 2y ≥ 230 where the inequality sign "greater than or equal to" satisfies the expression "at least".

4 0
2 years ago
Planet Fitness charges a one-time application fee of $50 plus $30 per session for a
Vsevolod [243]

Answer:

When the number of sessions is equal to 10, the total cost is the same in the two plans

Step-by-step explanation:

Let

y ---> the total cost

x ---> the number of sessions

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

Planet Fitness

we have

The slope is equal to

m=\$30\ per\ session

The y-intercept or initial value is equal to

b=\$50

substitute

y=30x+50 ----> equation A

Gold's Gym

we have

The slope is equal to

m=\$10\ per\ session

The y-intercept or initial value is equal to

b=\$250

substitute

y=10x+250 ----> equation B

Equate equation A and equation B

30x+50=10x+250

solve for x

30x-10x=250-50\\20x=200\\x=10

therefore

When the number of sessions is equal to 10, the total cost is the same in the two plans

6 0
3 years ago
A solid concrete wall 4.0 m by 2.4 m and 30 cm thick, with a thermal conductivity of 1.3 w/(m·k), separates a basement at 18°c f
Nastasia [14]
<span>THE AREA OF THE ROOM IS :A=4*2.4=9.6 m^2
THICKNESS t=0.30 m
DIFFERENCE IN TEMPERATURE dT=18-6=12
q=kAdT/dx=kA*dT/t
q=1.3(9.6)(12)/0.30=4992 W=499.2 J/s
In 1 hour or 3600 sec
P=q*T=(499.2 J/s)(3600 s)=1797120 J=1.8 MJ
1.8MJ OF HEAT FLOWS HTROUGH THE WALL IN ONE HOUR</span>
5 0
3 years ago
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