Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Answer the number 28
![varies inversely as y and x = 6 when y = 3, what is y when x is 9?
a. 6
b. 2
c. 4
d. 8
26. Determine which statement is always true?
a. A kite has congruent diagonals.
b. A kite has perpendicular diagonals.
c. A kite has 2 pair of parallel sides.
d. A kite has diagonals that bisect each othe
27. In 16:4 = x: 2, find x.
a. 8
b. 6
c. 4
d. 2
28. Which of the following can be the sides of a right triangle?
b. 15, 20, 25
29. Which of the following formulas shows the Law of Cosines?
a. 5V3, 3V5, 60
c. 2v3, V16, 30
d. 4, 6, 9
a. c = a? + b² – 4ac + cos A
b. c2 = a? -b2 - 2abcosC
30. Which of these triangles is not an oblique triangle?
c. c a2 + b2- 2abcosC
d. (cos A)/a (cosB)/b
P.S
%3D
a. Scalene Triangle
b. Obtuse Triangle
c. Right Triangle
d. Equilateral Triangle
31. Solve the quadratic equation x2-x-20 0 by factoring.
c. -4 and 5
a. 4 and 5
b. 4 and -5
d. -4 and -5
32. The length of the garden is 5 meters longer than its width and the area is 14 m2. How long is the garden?
с. 5m
a. 9m
b. 7m
d. 2m
33. Ify varies inversely as x and y 8 when x = 2, which is the correct way to solve for the constant of the
variation?
%3D
b. y = kx
c. k =2
d. x = ky
a.
=y
34. Translate "The current (x) in a wire varies directly as the potential energy (P) and inversely as the square
of its diameter (d)" to variation equation.
kd
C. X=
kP
d. x=
d2
b. P= kxd
a. x = kPn
35. By identifying the constant of variation of m to n, which will complete the table?
m 20 40 60 80 100
10 20
40 50
d. 90
b. 30
с. 120
a. 60](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5d08d512-d39a-4fcc-854a-e75dc5e577e1%2Feece37d9-9b91-41ed-b05a-e627586e86f5%2Fbi09wn9_processed.jpeg&w=3840&q=75)
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