Answer:
x,y,z=4,3,-4
Step-by-step explanation:
2x+4y-6x=44 = x+2y-3z=22
x+2y-3z=22
x+2y+3z=-2
x+2y-3z=22
3x-4y+4z=-16
x+2y-3z=22 ------>
2x+4y=20
x+2y+3z=-2 ------>
x+2y-3z=22 ------>
13x-4y=40
3x-4y+4z=-16 ------->
2x+4y=20
13x-4y=40
y=3
x=4
4+2x3-3z=22
z=-4
(x,y,z)=(4,3,-4)
2x4+4x3-6x(-4)=44
4+2x3+3x(-4)=-2
44=44
-2=-2
-16=-16
(x,y,z)=(4,3,-4)
I am so sorry if it is incorrect I tried :<
8^(-1-3+1) = 8^-3
answer is
B. the sum of the exponents is -3
D. the value of the expression is 1/512
E. an equivalent expression is 8^7*8^-10 (answer will be 8^-3)
Answer:
4n+44, you have to distribute the 4 into the parentheses.
Step-by-step explanation:
Order of operations or PEMDAS is as follows: parenthesis, Exponents, Multiplication and division, addition and subtraction.
So for this equation you have to do the devision first because their is not parenthasis or exponents. So you end up with the equation
5+3+6+1
then you just add all the numbers together to get your final answer of 15
Answer:
24 ways
Step-by-step explanation:
Given that
Number of students = 4
Lecturer have to stand in the middle position.
We have five places in which middle place is for lecturer,now we have four places and we have to arrange four students on that four places.So there will 4! ways to arrange those students.
4!= 4 x 3 x 2 x 1
4! =24
So we have 24 ways to arrange 4 students and one lecturer .
