2 years ago

2 x ( x 7 ) - ( x 6 )

Mathematics

2 answers:

Maslowich2 years ago

7 0

That acc makes no sense

Kryger [21]2 years ago

5 0

So i replaced the blanks with a variable
2(7x)- (6x)
14x-6x
8x

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What is 37.04 +56.20?<br><br> Show your work

Tomtit [17]

37.04
+ 56.20
----------------
93.24

6 0

3 years ago

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2 good 2 be truee???? pls help

Kaylis [27]

Answer:

the correct answer is 23$

Step-by-step explanation:

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4 0

3 years ago

Use matrix inversion to solve the collection of systems of linear equations. HINT [See Example 4.] (a) −x − 4y + 2z = −10 x + 2y

omeli [17]

Answer:

Step-by-step explanation:

given is a system of linear equations in 3 variables as

$-x - 4y + 2z = −10\\ x + 2y - z = 11 \\x + y - z = 14$

This can be represented in matrix form as

AX=B Or

$\left[\begin{array}{ccc}-1&-4&2\\1&2&-1\\1&1&-1\end{array}\right] *\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}-10\\11\\14\end{array}\right]$

So solution set

X would be $A^{-1} B$

|A|=-1(-1)+4(0)+2(-1)=--1

Cofactors of A are

-1 0 -1

-2 -1 -3

0 1 2

So inverse of A is

1 2 0

0 1 -1

1 3 -2

Solution set would be

x=12

y=-3

z=-5

8 0

2 years ago

I need help on number #16

SCORPION-xisa [38]

It only equals positive 12, that symbol means it equals positive and negative 12

4 0

2 years ago

Another brainliest if its right

tekilochka [14]

Answer:

16 : 14 = 30 : 26.25

Step-by-step explanation:

If rounded:

16 : 14 = 30 : 26

8 0

2 years ago

Read 2 more answers

2 x ( __ x 7 ) - ( __ x 6 )

2 x ( x 7 ) - ( x 6 )