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elena-s [515]
3 years ago
5

I really need help plz

Mathematics
1 answer:
scoundrel [369]3 years ago
4 0
The answer is choice A.

In this problem, we are shrinking the poster by 1/4 of its size.

Which means you need to divide the sides by 4
For width:
w =  \frac{32}{4}  = 8
For length:
l =  \frac{28}{4}  = 7


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If the value of third order determinant is 11. Then what is the value of the determinant formed by its cofactors.
nordsb [41]

Answer:

146.41

Step-by-step explanation:

third order determinant = determinant of 3×3 matrix A

given ∣A∣=11

det (cofactor matrix of A) =set (transpare of cofactor amtrix of A) (transpare does not change the det)

=det(adjacent of A)

{det (cofactor matrix of A)}  ^2  = {det (adjacent of A)} ^2

 

(Using for an n×n det (cofactor matrix of A)=det (A)^n−1 )

we get

det (cofactor matrix of A)^2  = {det(A)  ^3−1 }^2

 

=(11)^2×2  = 11^4

 =146.41

5 0
3 years ago
(1000÷1)×10-5000 Giving Brainliest​
Y_Kistochka [10]
5,000 is the answer to the equation
6 0
2 years ago
X-5=17??????????????????
yKpoI14uk [10]

Answer:

x=21

Step-by-step explanation:

add 5 to both sides. it gives u 21

4 0
3 years ago
Anna can buy 3 sweatshirts for a total of $45.H
Masteriza [31]

Answer: Anna could buy 5 sweatshirts for $60.


Step-by-step explanation:

lets figure out the price of one sweatshirt.

45/3 = 15

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so 5 sweatshirts cost $60

6 0
3 years ago
28.47<br> % of <br> 637.38<br> cm
kykrilka [37]

Answer:

181.46 cm

Step-by-step explanation:

28.47 * 637.47 / 100 = 181.46

3 0
3 years ago
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