9th Grade Algebra 1 Mathematics Test Two Unit
Mathematics 9th-grade algebra 1Unit2,10 Time Allowed:- 1 h
Name |
| Obtained Marks |
|
Roll No. | 9th-grade algebra 1 | Total Marks | 30 |
Q.No.1 Select the correct answer of the followings9th grade algebra 1. Cutting or erasing is not allowed. (6)
Sr.no | Questions | A | B | C | D |
1 | Real part of 2ab(𝑖 + 𝑖 2 ) is | 2ab | -2ab | 2ab𝑖 | -2ab𝑖 |
2 |
(27x-1)-2/3 = |
Öx2/9 |
3Öx2/8 |
Öx3/8 |
3Öx2/9 |
3 | The Symbol 𝑖 for the number Ö-1 was first used by the mathematician | Arthur Cayley | Jobst Burgi | Leonard Euler | Henry Briggs |
4 | The set solution of x2 + 1= 0 is | {𝑖,-𝑖} | {1,-1} | {0,-1} | None of these |
5 | The symbol used for 1⎯1 correspondence is | ⟶ | ⟺ | ≅ | ⟷ |
6 | If perpendicular from two vertices of a triangle to the opposite side are congruent, then the triangle is |
Equilateral |
Isosceles |
Scalene |
All of these |
Q.No.2 Give short answers to the following. (14)
(i) What is meant by S.A.S postulate?
| (v) Find a rational number b/w 3/4 and 5/9 |
(ii)Find the value of unknowns for the given congruent triangles. | |
(iii) Find x and y if x + 𝑖 y + 1 = 4 - 3𝑖 | (vi)Evaluate 𝑖27 |
(iv) Simplify (8/125)-4/3 | (vii) Write in the form a +𝑖b of (2 - Ö-4) (3 - Ö-4) |
Q.No.3 (a) Simply (b) Separate the real and imaginary part of Ö(216)2/3 x (25)1/2 (0.04)-3/2 (3) (-1 + Ö -2 )2 (3) |
(c) If Z=2+3𝑖 and W= 5 - 4𝑖 then prove that 1/2𝑖( Z – Z) is the imaginary part of Z (4) |
Q.No.4 Prove that the right bisectors of the sides of a triangle are congruent. |