Literal Equations: Quiz

8 September 2022
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10 test answers

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question
Marta is solving the equation S = 2ฯ€rh + 2ฯ€r2 for h. Which should be the result?
answer
A. s/2ฯ€r-r=h
question
The slope-intercept form of a linear equation is y = mx + b, where x and y are coordinates of an ordered pair, m is the slope of the line, and b is where the line crosses the y-axis. Which is an equivalent equation solved for the slope, m?
answer
B. y-b/x=m
question
The temperature measured in Kelvin (K) is the temperature measured in Celsius (C) increased by 273.15. This can be modeled by the equation K = C + 273.15. When solved for C, the equation is
answer
A. C = K - 273.15
question
Solve for w. 5w + 9z = 2z + 3w
answer
A. w=-7/2z
question
Solve for k. 8k + 2m = 3m + k
answer
D. k=m/7
question
The goals against average (A) for a professional hockey goalie is determined using the formula A = 60 (g/t) . In the formula, g represents the number of goals scored against the goalie and t represents the time played, in minutes. Which is an equivalent equation solved for g?
answer
A. At/60=g
question
The equation d = m/v can be used to calculate the density, d, of an object with mass, m, and volume, V. Which is an equivalent equation solved for V?
answer
C. m/d=V
question
Solve the equation for a. K = 4a + 9ab
answer
D. a= K / 4+9b
question
The formula for the area of a rhombus is A = 1/2d1d2, where d1 and d2 are the lengths of the diagonals. Which are equivalent equations? Select two correct answers.
answer
2. d1=2A/d2 4.d2=2A/d1
question
The formula for the circumference of a circle is C = 2ฯ€r, where r is the radius and C is the circumference. The equation solved for r is r = C/2ฯ€. Find the radius of a circle that has a circumference of 16ฯ€.
answer
B. r=8