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azamat
3 years ago
12

Help pleaseeeeeeeee thank youuuuu

Mathematics
1 answer:
zmey [24]3 years ago
7 0
23 balloons would cost 69$
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Suppose that A is nonsingular. Prove that its inverse A-1 is unique. [Hint: Show that if there exists two matrices, B and C, suc
Bogdan [553]

Answer with Step-by-step explanation:

Let A is non-singular

\mid A\mid\neq 0

We have to prove that A^{-1} is unique.

Suppose B and C are inverse of A such that

BA=I and AC=I

By using property AA^{-1}=A^{-1}A=I

C=C

(BA)C=B(AC)

I\cdot C=B\cdot I

C=B

Hence, the inverse of A is unique.

4 0
3 years ago
A tire has a diameter of 184 cm what is the circumference of the tire
viktelen [127]
Here is your answer

diameter of tyre= 184cm

So,

Circumference=\:{pi}×d

= 3.14 × 184 cm

= 577.76 cm

HOPE IT IS USEFUL
8 0
2 years ago
What is the solution to the system of equations? you must show all work to recieve full credit!
earnstyle [38]
Use the substitution method:
2x - 6y = -12
x - 2y = -8
Then x = 2y - 8
Substitute in the first equation:
2(2y - 8) - 6y = -12
4y - 16 - 6y = -12
-2y = 4
y = -2
Now substitute y in one of the two equations given you prefer:
For example x-2*(-2) = -8
x + 4 = -8
x = -12
The solutions are x = -12 and y = -2
5 0
3 years ago
Which of the following constants can be added to x2 - 10x to form a perfect square trinomial?
Nadusha1986 [10]
X=5 
is the answer/................
6 0
3 years ago
The st. joe company grows pine trees and the average annual increase in tree diameter is 3.1 inches with a standard deviation of
77julia77 [94]

Solution: We are given:

μ=3.1,σ=0.5,n=50

We have to find P(Mean <2.9)

We need to first find the z score

z= (xbar-μ)/(σ/sqrt(n))

=(2.9-3.1)/(0.5/sqrt(50))

=(-0.2)/0.0707

=-2.83

Now we have to find P(z<-2.83)

Using the standard normal table, we have:

P(z<-2.83)=0.0023

Therefore the probability of the sample mean being less the 2.9 inches is 0.0023

5 0
3 years ago
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