Can someone please answer and explain thank you! I’ll mark brainliest

Mathematics

2 answers:

k0ka [10]3 years ago

6 0

Answer:

Step-by-step explanation:

You first multiply the a with bx and c then after the answer when you multiply you "add" with it would be something like

ex: 6x+4=28

- 4 -4 subtract both sides

------------------------

6x=24 then divide 6 with 24.

x= 3

ra1l [238]3 years ago

6 0

You first distribute by multiplying A by what is in the parentheses

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−6 = x/8+4 ILL GIVE BRAINLIEST❤️❤️

Lorico [155]

Answer:

Step-by-step explanation:

6x=4+8

6x=12x= 12/6

x=2

8 0

3 years ago

A is a 4x4 matrix and A^2 + 4A - 5I = 0. If det(A+2I)>0, enter det(A+2I)

maw [93]

$\mathbf A^2+4\mathbf A-5\mathbf I=0$
$\implies\mathbf A^2+4\mathbf A+4\mathbf I=(\mathbf A+2\mathbf I)^2=9\mathbf I$
$\implies\det\bigg((\mathbf A+2\mathbf I)^2\bigg)=\det(9\mathbf I)$
$\implies\det(\mathbf A+2\mathbf I)^2=9^4\det\mathbf I$
$\implies\det(\mathbf A+2\mathbf I)=\pm\sqrt{9^4}$
$\implies\det(\mathbf A+2\mathbf I)=9^2=81$

where we take the positive root because we're told that the determinant is positive.

5 0

3 years ago

COULD YOU GUYS HELP ME WITH 6 AND 7 PLEASE

d1i1m1o1n [39]

Answer:

Answer is given below with explanations.

Step-by-step explanation:

$type \: 1 \: MSD \: s \: appropriate \: length : \\ vessels \: equal \: to \: or \: less \: than \: \: 65 \: \\ feet \: in \: length \\ option \: a) \: is \: the \: correct \: answer. \\ type \: 2 \: MSD \: s \: appropriate \: length \\ vessels \: that \: are \: greater \: than \: 65 \: \\ feet \: in \: length. \\ note : Vessels 65 \: feet \: or less in length \\ may use a Type I, II, or III MSD. \\ Vessels more than 65 feet in length must \\ install a Type II or III MSD.$