Question

What percent of Rs. 8 is Rs. 2?
a) 50
b) 25
c) 0.16
d) 4
ii) In A ABC, AB = AC. If ZBAC + ZACB = 130°, ZACB is -
a) 130°
b) 80°
c) 50°
d) 100°
iii/H.C.F of (a?x – x3) and 2x (a2 - ax) is –
a) (a + x)
b) x (a - x)
c) 2a (a - x)
d) (a - x)
iv In a graph, a point is situated 4 units away from the origin on the y-axis. The co-ordinate of the point is -
a) (4,0)
b) (0, 4)
c) (0,0)
d) (4,4)
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Answer 1

Step-by-step explanation:

What percent of Rs. 8 is Rs. 2? 25%

In A ABC, AB = AC. If ZBAC + ZACB = 130°, ZACB is 50°

H.C.F of (a?x – x3) and 2x (a2 - ax) is – x (a - x)

In a graph, a point is situated 4 units away from the origin on the y-axis. The co-ordinate of the point is - (4,0)

Answer 2

Answer:

i) b) 25

$\frac{2}{8} * 100 = 25%$ %

ii) c) 50°

Since, AB=AC,

Therefore, as we know, angles opposite to equal sides are equal.

So, ZABC = ZACB.

Also, we know that the sum of all the angles of a triangle = 180°

Also, it is given that ZBAC + ZACB = 130°

So, ZABC + ZBAC + ZACB = 180°

⇒ ZABC = 180° - 130° = 50° = ZACB

iii) b) x(a-x)

a²x - x³ = x(a²-x²) = x(a-x)(a+x)

2x(a²-ax) = 2ax(a-x)

HCF = x(a-x)

iv) b) 0,4

Since, the point lies on y-axis therefore, the y-coordinate cannot be 0 and the x-coordinate should be 0.

So, (x,y) = (0,4)

Hope this helps.....