Step-by-step explanation:
For the point (5,8) to be a solution to the equations, when you insert x=5 and y=8 , they have to equal to the given values
substituting (5,8) into 4x+y
4(5)+8
=20+8
=28
substituting(5,8) into x-y=3
5-8
= -3
Step-by-step explanation:
15.50n +10=72
15.50×4+10=72
62+10=72
Since it's an estimate, probably 103<span />
77 because 4.9 Times 10 Times 3 equals 147 and 1.4 Times 10 Times 5 equals 70 then you would subtract 70 from 140 and get 77
Theorem: If two chords intersect within a circle, then the product of the lengths of the segments (parts) of one chord is equal to the product of the lengths of the segments of the other chord.
In oyur case,
![2\cdot x=3\cdot 4.](https://tex.z-dn.net/?f=2%5Ccdot%20x%3D3%5Ccdot%204.)
Solve this equation to find x:
![x=\dfrac{3\cdot 4}{2}=6.](https://tex.z-dn.net/?f=x%3D%5Cdfrac%7B3%5Ccdot%204%7D%7B2%7D%3D6.)
Answer: 6, choice B.