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ss7ja [257]
4 years ago
12

What is the value of x? (x + 40° (3x)º

Mathematics
1 answer:
aniked [119]4 years ago
7 0

Answer:

3x2+120x

Step-by-step explanation:

=(x+40)(3x)

=(x)(3x)+(40)(3x)

=3x2+120x

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The scale of a map is 1 inch = 60 miles. Find the actual distance if the distance on the distance on the map is 3 1/2 inches.
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Answer:

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Step-by-step explanation:

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The ratio of sugar to flour used in a pudding recipe is 2:1. Which figure shows equivalent ratios? A graph is drawn. The title i
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3 years ago
Read 2 more answers
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

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