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3 years ago

$20 iteam marked down 40%

Mathematics

1 answer:

Lana71 [14]3 years ago

5 0

Answer:

$12

Step-by-step explanation:

Multiplier=0.6

20 times 0.6 = 12

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Need ASAP if you don’t know the answer don’t answer

zubka84 [21]

Answer:

Hmm

Step-by-step explanation:

8 0

3 years ago

Help plsss <br> find length..

posledela

I think it’s been awhile but just ur 140/360 then times that by pi then 2 then times r= 12.22

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3 years ago

The spinner shown is spun 300 times.

Ann [662]

Answer:

A) 60

B) 72/300

C) 150

Step-by-step explanation:

A) P(green) = ⅕

⅕ × 300 = 60

B) purple: 72

45+37+52+94+72 = 300

Therefore, 72/300

C) 1000 × (45/300)

150

8 0

3 years ago

Need help with this problem

professor190 [17]

A represents 1/9 and B represent 8/9

3 0

3 years ago

If A is a square matrix such that A^2=2I,then A^-1=?

Afina-wow [57]

$A^2=2I$

Recall that $I=AA^{-1}=A^{-1}A$ , so

$A^2=2(A^{-1}A)$

Multiply on the right by $A^{-1}$ and regroup terms:

$A^2A^{-1}=2(A^{-1}A)A^{-1}$

$A(AA^{-1})=2A^{-1}(AA^{-1})$

$A=2A^{-1}$

and finally solve for $A^{-1}$ :

$\boxed{A^{-1}=\dfrac12A}$

3 0

3 years ago