PE2_Module 02 [Level 01, Qtr 2_Wk 2]

Quiz by Lilibeth Pulido

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15 questions

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Q1
30s
Q2
It is a type of variation in which two or more variables vary directly on each other.
Joint
Inverse
Combined
Direct
30s
Q3
What is the initial step in solving joint and combined variation?
Write the correct equation
Rewrite the equation by substituting in the value of k
Use the information given in the problem to find the value of k.
Use the equation and the remaining information given in the word problem to answer the question asked.
30s
Q4
Suppose y varies jointly as x and z. If y =180 when z=15 and x = -3, then find y when x = 7 and z = -5
$y=-140$
$y=140$
$y=4$
$y=-4$
30s
Q5
Suppose p varies directly as r, and p and varies inversely as t. If t=20 when p=4 and r=2, then find t when r=10 and p= -5
$t=-80$
$t=-4$
$t=4$
$t=80$
30s
Q6
30s
Q7
30s
Q8
Translate this variation statement into its variation equation: “In Anthropology, cephalic index is used to estimate the dimensions of the bones. The cephalic index c varies directly as the width w of the head and inversely as the length L of the head when viewed from the top.”
$c=kwL$
$c=\frac{kw}{L}$
$c=\frac{w}{L}$
$c=wL$
30s
Q9
Translate this variation statement into its variation equation: “The appropriate length s of a rectangular beam varies jointly as its width w and its depth d”
$s=\frac{k}{w}$
$s=kwd$
$s=wd$
$s=\frac{kw}{d}$
30s
Q10
Translate this variation statement into its variation equation: “The drag force F on a boat varies jointly with the wet surface area A of the boat and the square of the speed s of the boat.”
$F=\frac{kA}{s}$
$F=kA$
$F=\frac{kA}{s^2}$
$F=kAs^2$
30s
Q11
Which of the following best translates the given situation into its corresponding mathematical equation?
$P=\frac{kT}{I}$
$I=kPT$
$P=kTI$
$I=\frac{kT}{P}$
30s
Q12
What is the constant of variation?
$k=40$
$k=\frac{1}{40}$
$k=1$
$k=\frac{1}{12}$
30s
Q13
How much interest will be earned on Php 8,000 in 4 years?
Php 700
Php 800
Php 900
Php 600
30s
Q14
What is the constant of variation?
$k=5$
$k=6$
$k=7$
$k=8$
30s
Q15
How many minutes will it take 6 people to solve 42 problems?
56 minutes
1 hour and 6 minutes
46 minutes
2 hours and 6 minutes
30s

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PE2_Module 02 [Level 01, Qtr 2_Wk 2]

Quiz by Lilibeth Pulido

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