MATHEMATICS 7

What is the value of x in the equation 3x + 4 = 13?

• a) 3

• b) 4

• c) 5

• d) 6

Answer explanation

Explanation: Subtracting 4 from both sides of the equation gives us 3x = 9. Dividing both sides by 3 gives us x = 3.

Subtract 4a + 5b - 3c from 6a - 3b + c

• 2a - 8b + 4c

• -2a + 8b + 4c

• 12a - 2b + c

• 2a + 8b - 4c

Which of the following passes through the center of the circle and twice the length of the radius?

• Arc

• Secant

• Tangent

• Diameter

• a

• b

• c

• d

Which of the following is the secant line of the circle? Refer to Figure 2.

• JL

• JM

• KM

• NS

In naming circle, how many letters do we use?

• One capital letter indicating the center

• Two capital letters

• Three capital letters

• The letter of the diameter

________________ is the acronym for the steps in subtracting integers.

• KOSA

• AKOS

• SOAK

• KSOA

What do you call a line segment joining any two points on the circle?

• Arc

• Chord

• Diameter

• Radius

Which of the following is true about the diameter?

I. It is the longest chord.

II. It is twice the length of the radius.

III. It passes through the center of the circle.

• I only

• I and II only

• I and III only

• I, II and III

Simplify: (5x³ + 3y³ - 4z³ - 2xyz) + (7z³ - 3x³ + 5y³ - xyz) - (4x³ + 6y³ + 3z³ + 3xyz)

• 2y³ - 6xyz - 2x³

• y³ - 4xyz - 4x³

• 12y³ + 6xyz - 12x³

• 2y² - 6xyz - 2x²