Answer
x= w/3y
Step-by-step explanation:
to isolate x you divide each side by 3y, which results in x= w/3y
: )
Answer:
B) -2x+2y=-2
Step-by-step explanation:
we have
----> equation A
----> equation B
Solve the system by graphing
Remember that the solution of the system of equations is the intersection point both graphs
using a graphing tool
The solution is the point (6,5)
see the attached figure
Remember that
If a equation is added to the system so that the solution does not change, then the solution of the system must be a solution of the equation added
<u><em>Verify each case</em></u>
The solution of the system is (6,5)
substitute the value of x and the value of y in each equation
case A) x-y=2
6-5=2
1=2 ----> is not true
therefore
This equation can't be added to the system
case B) -2x+2y=-2
-2(6)+2(5)=-2
-12+10=-2
-2=-2 ----> is true
therefore
This equation can be added to the system
case C) 3x+y=20
3(6)+5=20
18+5=20
23=20 ----> is not true
therefore
This equation can't be added to the system
case D) x+2y=18
5+2(6)=18
5+12=18
17=18 ----> is not true
therefore
This equation can't be added to the system
Answer:
1/5
Step-by-step explanation:
Hi there!
To find the answer, use inverse operations to solve.
Multiply 7/15 by 3/7 to isolate the unknown number.
7/15 * 3/7 is equal to 0.2, which can be simplified into fraction form as 1/5.
I hope this helps!
:)
range is 31.5, variance is 161.3 and standard deviation is 12.7 for a sample of top 10 annual TV personalities.
Step-by-step explanation:
- Average is mid-point is the mid-point of the data but can skew....
- On the Left or Right is there are higher or lower values.
- Range is difference between maximum and minimum value of data.
- Variance, measure of variability of data but squared or mean deviation.
- Standard deviation is the most important variability.
- It helps in finding out variability with 3 sigma deviations.
- Standard deviation is square root of variance and each sigma explains...
- The data lieing between or within the extreme values.
We need to calculate which is higher...2.5% OR $40.
1950 * .025 = $48.75
Thus, 2.5% is higher than $40. So, if allowed, she would opt for the $40 payment.