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Deffense [45]
3 years ago
9

PLEASE ANSWER EACH OF THESE QUESTIONS IM GIVING OUT BRAINLIEST !!!!! D:

Mathematics
2 answers:
Alexus [3.1K]3 years ago
3 0

Answer:

no 1

2x^2 + 6

no 2

x^2 + 63

no3

2x^2 + 20

no 4

3 x 3 x 4 divided by 3

=12cm^3

kompoz [17]3 years ago
3 0

Answer:

hypotenuse=15 ft

Step-by-step explanation:

(2x+1)(x+6)=2x^2+13x+6

(x+7)(x+9)=x^2+16x+63

(2x+4)(x+5)=2x^2+14x+20

4 no question

V=L*B*H/3

=3*3*4/3

=12 in^3

L=lenghth

B=breadth

H=height

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HELP ME IT'S URGENT I COULD FAIL
hjlf

Answer:

pm+2=8

Step-by-step explanation:

Given,

m=3

p=3

We know,

pm+2=3(3)+2

=3×3+2

=6+2

=8

5 0
2 years ago
Read 2 more answers
Solve the system using elimination. ''x-3y=9 and -x+3y=-9
DiKsa [7]

Answer:

Infinitely many solutions.

Step-by-step explanation:

Let's solve your system by elimination.

x−3y=9;−x+3y=−9

x−3y=9

−x+3y=−9

Add these equations to eliminate x:

0=0

<u>Answer:</u>

Infinitely many solutions.

6 0
2 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

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

 

=(11)^2×2  = 11^4

 =146.41

5 0
3 years ago
Please help, im two weeks behind on my math ):
bixtya [17]

Answer:

the surface of area is 14cm to 2cm to 6cm please rate my answer

3 0
3 years ago
​= <br> The solution set is <br> ​ 1/2(10x+16)-13=-3/5(15x-35)
-BARSIC- [3]

Answer: 13/7 or as a decimal 1.857142857

How did i get the answer:

Step 1: Simplify both sides of the equation.

so 1/2 of 10 is 5, 1/2 of 16 is 8

-3/5 of 15 is -9 and -3/5 of -35 is POSITIVE 21

all together should look like 5x+8+−13=−9x+21

(now we have to combine like terms)

8+ -13= -5

5x -5 = -9x+21

Step 2: Add 9x to both sides

5x + 9x= 14x

14x -5 = 21

Step 3: Add 5 to both sides.

21+5= 26

14x=26

Step 4: Divide both sides by 14.

26/14= 1.85714286 or 13/7

8 0
3 years ago
Read 2 more answers
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