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3 years ago

9

Solve this absolute value /x+2/-/x/=6

1 answer:

stira [4]3 years ago

6 0

Answer:

x € ø

Step-by-step explanation:

-(x + 2) -(-x) =6,x +2 <0,x<0

x € ø, x<-2, x<0

x € ø, x €❮-∞-,2❯

x € ø

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Please help me, I am so confused. Thanks

miskamm [114]

Answer:

c. 80

Step-by-step explanation:

cos x = sin(x-70)

cos x = cos [90-(x-70)]

cos x = cos (90-x +70)

cos x = cos 160 -x

x= 160-x

2x = 160

x =80

8 0

3 years ago

Will give brainliest

Vesnalui [34]

Answer:

1/5... 1 on top 5 on bottom

Step-by-step explanation:

sub in the values:

$\frac{5+y}{6x}$ will now be $\frac{5+7}{6(10)}$

now add:

$\frac{12}{60}$

simplify:

1/5

4 0

2 years ago

3/4 is 1/3 of what number? Write a division expression to match this expression

WITCHER [35]

It would be 9/4. To find 1/3 of something you have to multiply it by 3. 9/4 should be considered as a division expression. Hope this helped!

7 0

3 years ago

Arrange the entries of matrix A in increasing order of their cofactors values

givi [52]

To find the cofactor of

$A=\left[\begin{array}{ccc}7&5&3\\-7&4&-1\\-8&2&1\end{array}\right]$

We cross out the Row and columns of the respective entries and find the determinant of the remaining $2\times 2$ matrix with the alternating signs.

$Ac_{11}=\left|\begin{array}{ccc}4&-1\\2&1\end{array}\right|$

$Ac_{11}=4\times 1- -1\times 2$

$Ac_{11}=4+ 2$

$Ac_{11}=6$

$Ac_{12}=-\left|\begin{array}{ccc}-7&-1\\-8&1\end{array}\right|$

$Ac_{12}=-(-7\times 1- -1\times -8)$

$Ac_{12}=-(-7- 8)$

$Ac_{12}=15$

$Ac_{21}=-\left|\begin{array}{ccc}5&3\\2&1\end{array}\right|$

$Ac_{21}=-(5\times 1- 3\times 2)$

$Ac_{21}=-(5-6)$

$Ac_{21}=1$

$A_c{23}=-\left|\begin{array}{ccc}7&5\\-8&2\end{array}\right|$

$Ac_{23}=-(7\times 2 -8\times 5)$

$Ac_{23}=-(14-40)$

$Ac_{23}=26$

$A_c{31}=\left|\begin{array}{ccc}5&3\\4&-1\end{array}\right|$

$Ac_{31}=5\times -1 -4\times 3$

$Ac_{31}=-5-12$

$Ac_{31}=-17$

$A_c{33}=\left|\begin{array}{ccc}7&5\\-7&4\end{array}\right|$

$Ac_{33}=7\times 4- -7\times 5$

$Ac_{33}=28+35$

$Ac_{33}=63$

Therefore in increasing order, we have;

$Ac_{31}=-17,Ac_{21}=1,Ac_{11}=6,Ac_{23}=26,Ac_{12}=15, Ac_{33}=63$

7 0

3 years ago

Read 2 more answers

Which is the better deal: $33/10 gallon or $47.05/15 gallon

marishachu [46]

$47.05/15 is better deal

33/10=3.3

47.05/15=3.13666666

4 0

3 years ago

Read 2 more answers