What is the square root of -25:
- (A) 5
- (B) -5
- (C) -2.5
- (D)None of these
- (D)None of these
The square root of -25 is not a real number. The square root of a negative number is an imaginary number. Therefore, the answer is (D) None of these.
Let x = – 4x + 4 the value of x will be:
- (A) 4/5
- (B) -4/3
- (C) 5/4
- (D) None of these
- (A) 4/5
If sum of all 10 values in the data set are 10, then what will be average:
- (A) 1
- (B) 10
- (B) 5
- (D) None of these
- (A) 1
Let (x ½) (x-1/2) then, find the correct answer:
- (A) 0
- (B) -1/4
- (C) 1
- (D) None of these
- (C) 1
Let (- 2x)3 then find the correct answer:
- (A) 8x
- (B) – 8x
- (C) – 8x3
- (D) None of these
- (C) – 8x3
Let (x/2) – (x / 4) = 2 then find the correct answer:
- (A) 2
- (B) 4
- (C) 8
- (D) None of these
- (C) 8
Let x22/3=64 then find the value of x:
- (A) 4
- (B) 16
- (C) 8
- (D) None of these
- (C) 8
Let x22/3 = 64. Find the value of x:
To solve the equation:
x22/3 = 64
Simplify the exponent:
22/3 = (22)1/3 = 41/3
Since 41/3 = 2, the equation becomes:
x2 = 64
To solve for x, take the square root of both sides:
x = √64 = 8
The value of x is 8.
The angle made by two lines is called:
- (A) Segment
- (B) Rays
- (C) Vertex
- (D) None of these
- (C) Vertex
The attitude made by using traces is referred to as the vertex. The vertex is the point where the two strains meet and where the angle is formed.
So, the precise solution is:
(C) Vertex
A polygon which consist of 8 sides is called;
- (A) Nonagon
- (B) Octagon
- (C) Decagon
- (D) None of these
- (B) Octagon
A polygon with 8 sides is referred to as an Octagon. Here’s a quick explanation of the phrases for polygons with exceptional numbers of sides:
Nonagon: A polygon with nine facets.
Octagon: A polygon with 8 sides.
Decagon: A polygon with 10 sides.
So, the appropriate answer is:
(B) Octagon
The time period “Octagon” comes from the Latin word “octo,” that means “8,” blended with “-gon,” which means “angled” or “sided.” Hence, an octagon is a polygon with 8 aspects and angles.
A measure of angle which is complement of itself is called:
- (A) 30°
- (B) 90°
- (C) 45°
- (D) None of these
- (C) 45°
