pls answer them all
pls . tomorrow is my mock test pls pls.
with proper explanation
Answers
1.
In the given figure, AC = BD then,
From the figure,
AC = AB + BC & BD = BC + CD
On putting these values in eq 1,
⇒ AB + BC = BC + CD
According to Euclid’s axiom, when equals are subtracted from equals, remainders are also equal.
On Subtracting BC from both sides,
=> AB + BC – BC = BC + CD – BC
=> AB = CD.
Answer - Option (C)
2.
The graph of y = 6 is a line
=> parallel to X-axis at a distance 6 units from the origin..
Answer - Option(A).
3.
Given a9 = 0
So, a + (9-1)d = 0
a+8d=0
a= -8d
Now, 29th term = a+28d
=-8d+28d
= 20d = 2 x 10d
= 2(-8d + 18d)
=2(a+18d)
= 2 x 19th term
Thus, the 29th term of the AP is twice of the 19th term.
Answer - Option(B)
4.
Let the number = x.
=> 1/3 of x =x-10
=> 1/3 * x=x-10
=> x/3=x-10
=> 30=3x-x
=> 30=2x
=> x=15
Answer - Option(B)
Hope it helps