3 years ago

Cora is getting balloons for her uncle,s birthday party she wants each balloon string to be 6 feet long

Mathematics

1 answer:

astra-53 [7]3 years ago

7 0

Answer:

how many balloons did she get

Step-by-step explanation:

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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

2 years ago

frank is wrapping a present. the box measures 6 cm wide by 9 cm long by 5.1 cm tall.what amount of wrapping paper,not counting o

Montano1993 [528]

(2 × (6cm x 9cm)) + (2 × (6cm x 5.1cm)) + (2 × (9cm x 5.1cm)) = 261 square cm

3 0

3 years ago

Brainlyist to whoever answers first

levacccp [35]

Answer:

The answer is 106

Step-by-step explanation:

angle B is equal to angle D

so do 91 + 15= 106

and the math at angle D is x - 15

hope this helps! :D

8 0

3 years ago

Read 2 more answers

2. What is the value of x if the angles<br> within a triangle are 2x +1, 7x-2 and 3x<br> +5?

noname [10]

Answer:

$x=14.67\\$ °

Step-by-step explanation:

The sum of all the three angles of any triangle is 180°

Putting sum of all the angles given equals to 180°

$(2x+1)+(7x-2)+(3x+5)=$ $180$ °

$2x+7x+3x+1-2+5=180$ °

$12x+4=180$ °

$x=\frac{180-4}{12}$

$x=14.67\\$ °

The value of the x is found on solving the given angles of the triangles.

8 0

3 years ago

Triangle ABC is a right triangle. The length of one leg is 30 cm and the hypotenuse is 78 cm. What is the length of the other le

Liono4ka [1.6K]

Answer:

Step-by-step explanation:

there is 180 degrees in a triangle

4 0

3 years ago