Answer:
(2, 8)
Step-by-step explanation:
Given the system of equation
3x+2y=22 ... *4
-4x+3y=16 .... *3
Using the elimination method
12x + 8y = 88
-12x + 9y = 48
Add
8y + 9y = 88+48
17y = 136
y = 136/17
y = 8
Recall that
3x+2y=22
3x+2(8)=22
3x + 16 = 22
3x = 22-16
3x = 6
x = 6/3
x = 2
Hence the required solution (x, y) is (2, 8)
Answer:
probability = 0.9286
Step-by-step explanation:
given data
mean = $8.30
standard deviation = $4.70
waits parties over a weekend of work = 60
solution
when we earn at least $550 in 60 parties
so average per party will be x =
average x = 9.1667
so now we get here z value that is
...............1
put here value and we get
z =
z = 0.184404
so
P(x>9.1667) = P(z>0.184404)
use standard normal table
probability = 1 - 0.0714 = 0.9286
Hey there!
y = 74 - 7
START at 74 and go back 7 spaces to your left and you should be left on your result of the y-value
y = 67
Therefore, your answer is: y = 67
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Answer:
<h3>
<u>X=5</u></h3>
Step-by-step explanation:
![12x + 19 + 22x - 9 = 180](https://tex.z-dn.net/?f=12x%20%2B%2019%20%2B%2022x%20-%209%20%3D%20180)
![12x + 22x = 180 - 19 + 9](https://tex.z-dn.net/?f=12x%20%2B%2022x%20%3D%20180%20-%2019%20%2B%209)
![\frac{34x}{34} = \frac{170}{34}](https://tex.z-dn.net/?f=%20%5Cfrac%7B34x%7D%7B34%7D%20%3D%20%20%5Cfrac%7B170%7D%7B34%7D%20%20)
![x = 5](https://tex.z-dn.net/?f=x%20%3D%205)
hope it helps....
Answer:
x = 1/3 or x = -2/3
Step-by-step explanation:
Let's solve your equation step-by-step.
9x2+3x−2=0
For this equation: a=9, b=3, c=-2
9x2+3x+−2=0
Step 1: Use quadratic formula with a=9, b=3, c=-2.
![x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D)
![x=\frac{-(3)\pm\sqrt{(3)^2-4(9)(-2)} }{2(9)}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-%283%29%5Cpm%5Csqrt%7B%283%29%5E2-4%289%29%28-2%29%7D%20%7D%7B2%289%29%7D)
![x=\frac{-3\pm\sqrt{81} }{18}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-3%5Cpm%5Csqrt%7B81%7D%20%7D%7B18%7D)
x = 1/3 or x = -2/3