Answer:
R2 = 43.03 ohms
Step-by-step explanation:
If R2=R4-15, then R4 = R2+15
According to the Wheastone bridge equation we have:
![\frac{R1}{R2} =\frac{R3}{R4}\\\frac{10}{R2} =\frac{6470}{R2+15}\\\\10*(R2+15) = 6470*R2\\10*R2+150 = 6470*R2\\150=(6470-15)*R2\\R2=\frac{6455}{150}= 43.03333](https://tex.z-dn.net/?f=%5Cfrac%7BR1%7D%7BR2%7D%20%3D%5Cfrac%7BR3%7D%7BR4%7D%5C%5C%5Cfrac%7B10%7D%7BR2%7D%20%3D%5Cfrac%7B6470%7D%7BR2%2B15%7D%5C%5C%5C%5C10%2A%28R2%2B15%29%20%3D%206470%2AR2%5C%5C10%2AR2%2B150%20%3D%206470%2AR2%5C%5C150%3D%286470-15%29%2AR2%5C%5CR2%3D%5Cfrac%7B6455%7D%7B150%7D%3D%2043.03333)
If Cheryl paid $8.10 using a ten dollar bill, then her change would be $1.90.
Answer: y=80/5x+80
Step-by-step explanation:
At one point graph goes from (0,400) to (25,800). So the y intercept is 400 because that’s where the line was at x=0. 0 to 25 is 25. 400 to 800 is 400. So the equation would be y=400/25x+400. But you can divide all of it by 5 to get y=80/5x+80.
The orthocenter is at (1, 5) hope this helps. If you need an explanation then ask me. Hope it helps :)
Answer:
x = 4
Step-by-step explanation:
Solve the inequality
2x - 3 > 11 - 5x ( add 5x to both sides )
7x - 3 > 11 ( add 3 to both sides )
7x > 14 ( divide both sides by 7 )
x > 2
The only value of x greater than 2 is 4, thus
x = 4 is in the solution set