The value of y is (-2)
Step-by-step explanation:
To solve the linear equation, Number of unknown variables and number of equations must be same.
In given equation,
-6x+4y=-62 Equation 1
-3x-5y=-17 Equation 2
The number of Variable are 2,
So, To solve for value of y, we need to make use of two given equation and it can't be found from one single equation
Let multiply Equation 2 with 2 units
we get, -6x-10y=-34
Now, Subtracting both the equations
(-6x+4y)-(-6x-10y)=(-62)-(-34)
4y+10y=(-28)
14y=(-28)
y=(-2)
Therefore, the value of y is (-2)
Answer:
+120/169 or -120/169
Step-by-step explanation:
- let
![cos^{-1}[\frac{5}{13} ] = \alpha](https://tex.z-dn.net/?f=cos%5E%7B-1%7D%5B%5Cfrac%7B5%7D%7B13%7D%20%20%5D%20%3D%20%5Calpha)
where, alpha is some angle that satisfies the assumed condition.
- so,
[ taking cos to the other side or applying cos on both sides]
- now, substitute this in the given expression
as sin
= 
[by general trigonometry formula: ![cos^{2}[\beta] +sin^{2}[\beta]=1](https://tex.z-dn.net/?f=cos%5E%7B2%7D%5B%5Cbeta%5D%20%20%2Bsin%5E%7B2%7D%5B%5Cbeta%5D%3D1)
]
so if , we can get sin
from the above formula as + or - 12/13
(because, after taking square root on both sides we keep + or -]
- as, sin
![2\beta = 2*sin[\beta ]*cos[\beta ]](https://tex.z-dn.net/?f=2%5Cbeta%20%20%3D%202%2Asin%5B%5Cbeta%20%5D%2Acos%5B%5Cbeta%20%5D)
[by general trigonometry formula]
- here, now
![sin[2\alpha ]=2*(+or- 12/13)*5/13\\](https://tex.z-dn.net/?f=sin%5B2%5Calpha%20%5D%3D2%2A%28%2Bor-%2012%2F13%29%2A5%2F13%5C%5C)
so, the final value can be 120/169 or -120/169.
Remember to follow PEMDAS and the "left-to-right" rule
39 x 2 = 78
67 - 78 = -11
-11 + 26 + 78
Combine
(-11 + 26) + 78
15 + 78
93 is your answer
hope this helps
Answer:
The sales of volume V, of a particular product with a net income of $5000 given a sales price of $40, a variable cost of $15?and $1000 in fixed cost is 240
Step-by-step explanation:
Given:
Net income= $5000
sales price= $40
variable cost =$15 and $1000
To Find:
sales of volume V=?
Solution:
We Know that
Where x= number of units sold
Similarily,
Substituting the known values,
Sloving the equation,
Answer:
B. Multiplication or Division property of equality
Step-by-step explanation:
Both sides of the equation have been multiplied by -1. The multiplication property of equality tells you that multiplying both sides of the equation by the same number does not change the truth of the equation (and the variables retain their values).
