Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
When any value satisfies the equation, you would simply state "all real numbers." There is a symbol for it, and even though it is difficult to explain, I will attempt to. It is simply an R with an extra line making it kind of look like |R, but it's connected to the furthermost left parallel line. I hope that helps!
Recall the equation A = pi * r^2. You've given the information that A = 289 pi. Now, simply solve the equation for r: A = pi * r^2 289 pi = pi * r^2 289 = r^2 sqrt(289) = r 17 = r
If v = r * h then> r = v / h
x = (r + st)/r is the expression that represents x in the equation rx - st = r.
R+14=39
r + 14 = 39 r = 25
39-14=25 so R=25 25+14=39
25
25
r = 25
28
In the equation g = rz, r represents a variable or a constant value. The specific value of r would need to be provided in order to determine its numerical value in the equation.
It is an equation and the value of r is 66
Without an equality sign the given expression can't be considered to be an equation.
For the question to have any meaning, the volume should be in cubic metres, not metres. The surface area of a sphere of radius r is 4*pi*r*r and its volume is 4/3*pi*r*r*r. Use the second equation to find the value of the radius, r and then use that value in the first equation to calculate the surface area.
y=a(1-r)^t where a is the initial value, r is the rate as a decimal and t is the time in years.