Answer:
The values of x and y to the given equations are x=5 and y=7
Step-by-step explanation:
Given equations are 
To solve the given equations by elimination method :
Multiply the equation (1) into 2 we get
Multiply the equation (2) into 5 we get
Now subtracting the equations (3) and (4) we get
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Therefore x=5
Now substitute the value of x=5 in equation (1) we get
4(5)-5y=-15
20-5y=-15
-5y=-15-20
-5y=-35
Therefore y=7
The values are x=5 and y=7
Answer:
It is a symbol used to denote an angle (or something else)
Step-by-step explanation:
Alpha(α) is a greek letter, it's one of the letters used to denote angles. Other such letters you'll often see in math are Beta (β), Gamma (γ), Delta (δ), these are used to denote angles. Also, pi (π), which is a mathematical constant. The letters phi (φ) and theta (θ) are also used for angles very often, especially in formulas. You'll see some of these in physics too.
It can be used as variable too, not necessarily for angles, but it's mostly used for them.
Thing to solve <span>√121 is 11
11</span>²=121
Answer:
The length of PQ is 3 Length of QR is 2
Step-by-step explanation:
