Solve the following equations for x:
3=x-5
7=x+2
10=5x
4=\dfrac{x}{3}
15=2x+3
14=-2x
3=\dfrac{x}{2}-5
8=2\left(x-3\right)
Make x the subject of the following equations:
y = \dfrac{x}{4}
y = x + z
y = - 5 \left(9 + x\right)
\dfrac{x}{8} + \dfrac{n}{9} = 3
Make k the subject of the following equations:
m = \dfrac{5 k x}{8} - 4
r = \dfrac{k}{k - 9}
Make y the subject of the following equations:
\dfrac{x}{y} = h - k
15 x^{2} + 5 y = 20
Solve D = R T for R.
Make R the subject of V = I R - E.
Rearrange the formula for kinetic energy: K = \dfrac{1}{2} m v^{2}, to make v^{2} the subject.
Consider the Pythagoras formula: c^{2} = a^{2} + b^{2}.
Rearrange the formula to make a^{2} the subject.
Rearrange the same formula to make b^{2} the subject.
Make m the subject of the following equations:
y = 6 m x - 9
x = 8 k \left(n + m\right)
x = - 9 k \left(n + m\right)
Solve the following equations:
x + 4 = 9
x - 1.39 = 8.67
7 x + 14 = 0
8 m + 9 = 65
2 \left(x - 2\right) = x - 4
9 p - 6 = 3 p + 24
\dfrac{x + 9}{7} = 4
\dfrac{1}{n - 2} = \dfrac{1}{9}
Make x the subject of the following equations:
\dfrac{y}{2}+5 = \dfrac{x}{4}
\dfrac{2x}{3} + \dfrac{n}{5} = x
\dfrac{y}{3} = 3-\dfrac{x}{2}
x+2 = 4\left(k + x\right)
kx = m + nx
\dfrac{x}{2} = \dfrac{n+x}{5}
The relationship between F degrees Fahrenheit and C degrees Celsius is F = 1.8 C + 32.
Find the temperature in degrees Celsius, C, that is equivalent to 51.8 degrees Fahrenheit.
The formula that converts Celsius into Fahrenheit is F = \dfrac{9}{5} C + 32.
Describe the steps that must be taken to make C the subject of the formula.
The bend allowance for sheet metal is given by the formula B = 2 \pi \left(R + \dfrac{T}{2}\right) \times \dfrac{A}{360}.
Make T, the thickness of the sheet, the subject of the formula.
The life expectancy, y, of a person born in Japan is approximated by the equation \\ y = 0.27 x + 72, where x is the number of years since 1970.
Make x the subject of this equation.
Find the value of x for when the life expectancy will be 95. Round your answer three decimal places.
In what year will the life expectancy in Japan reach 95 years?
The amount of oil, y, imported to the United States from Canada in millions of barrels per day can be approximated by the equation y = 0.106 x + 1.37, where x is the number of years since 2000.
In what year will the approximate number of barrels imported from Canada be 3.5 million per day?