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Makovka662 [10]
3 years ago
14

Solve 2x-5=7Pls tell me

Mathematics
2 answers:
velikii [3]3 years ago
7 0

Answer: if solving for x....

x= 6

Step-by-step explanation:

2x-5=7

2x-5+5=7+5

2x-5+5=7+5

2x/2= 12/2

x= 6

Rina8888 [55]3 years ago
4 0

Answer:

-10=7 (If your evaluating the expression.

Step-by-step explanation:

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The mass of Earth is 5.97 >< 1024 kilograms. The mass of the Moon is 7.34 x 1022 kilograms. What is the combined mass of E
LuckyWell [14K]

Answer:

7.34x10^22 kg can also be written as 0.0734 * 10^24 kg

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3 years ago
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

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=(11)^2×2  = 11^4

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5 0
3 years ago
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