Answer=2x+21 do you want the whole solution?
Given:
Population mean, μ = 10
Population standard deviation, σ = 1.5
Random variable, x = 11.
By definition, the z-score is
z = (x - μ)/σ
= (11 - 10)/1.5
= 0.667
Answer: 0.667
Answer:
−
1
⋅
9
2
=
1
2
x-1 \cdot \frac{9}{2}=12x
x−1⋅29=12x
Solve
1
Multiply the numbers
−
1
⋅
9
2
=
1
2
x{\color{#c92786}{-1}} \cdot {\color{#c92786}{\frac{9}{2}}}=12x
x−1⋅29=12x
−
9
2
=
1
2
x{\color{#c92786}{-\frac{9}{2}}}=12x
x−29=12x
2
Add
9
2
\frac{9}{2}
29
to both sides of the equation
3
Simplify
Step-by-step explanation:
Answer:
Step-by-step explanation:
y=-2x-4
y=5x+5
------------
-2x-4=5x+5
-2x-5x-4=5
-7x-4=5
-7x=5+4
-7x=9
x=9/-7
x=-9/7
y=5(-9/7)+5
y=-45/7+35/7
y=-10/7
Answer: x=-9/7, y=-10/7. (-9/7, -10/7).
----------------------------------------------------
-3x+y=8
2y=6x-10
----------------
6x-2y=10
-3x+y=8
-------------
y=8-(-3x)=8+3x
6x-2(8+3x)=10
6x-16-6x=10
-16=10
no solution
Answer: No Solution
--------------------------------
2y=4(x+3)
y-2x=6
--------------
y=4x+12
y=2x+6
--------------
4x+12=2x+6
4x-2x+12=6
2x+12=6
2x=6-12
2x=-6
x=-6/2
x=-3
y=2(-3)+6=-6+6=0
Answer: x=-3, y=0. (-3, 0).
-------------------------------------
x+2y=4
4x-2y=16
---------------
5x=20
x=20/5
x=4
4+2y=4
2y=4-4
2y=0
y=0/2
y=0
Answer: x=4, y=0. (4, 0).
