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Harshit
Subject: Maths
, asked on 9/5/18
Solve x-y=3 and 4x-y=60 by substitution and find value of X and y
Answer
7
Muskaan Jain
Subject: Maths
, asked on 8/5/18
Solve this:
Answer
1
Neha
Subject: Maths
, asked on 7/5/18
Ques.
Draw the graph of the following pair of linear equations in two variable graphically.
1) 2x-3y+13=0, 3x-2y+12=0
Answer
1
Neha
Subject: Maths
, asked on 7/5/18
Q. Solve x and y
2
x
a
+
y
b
=
2
a
n
d
x
a
+
y
b
=
4
Answer
8
Sparsh Khandelwal
Subject: Maths
, asked on 7/5/18
Solve this:
Q.
Sum of the common but proper divisors of
x
=
2
3
.
3
4
a
n
d
y
=
2
4
.
3
3
w
i
l
l
b
e
(A) 597 (B) 599
(C) 598 (D) 615
Answer
0
Sparsh Khandelwal
Subject: Maths
, asked on 6/5/18
Let p(x) = a
2
+ bx, q(x) = lx
2
+ mx + n. If p(1) – q(1) = 0, p(2) – q(2) = 1 and p(3) – q(3) = 4, then p(4) – q(4) equals
(B) 5
Answer
1
Neha
Subject: Maths
, asked on 5/5/18
Pls answer 18th question 2nd one??
Q.18. Solve :
2)
b
x
a
+
a
y
b
=
a
2
+
b
2
,
x
+
y
=
2
a
b
(x = y = ab)
Answer
1
Neha
Subject: Maths
, asked on 5/5/18
Pls answer
16
.
2
y
e
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r
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a
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o
a
f
a
t
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5
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d
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s
h
i
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d
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r
.
2
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e
a
r
s
l
a
t
e
r
,
h
i
s
a
g
e
w
i
l
l
b
e
8
m
o
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.
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10
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e
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19
.
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5
%
l
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15
%
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s
7
.
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5
%
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m
o
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a
t
10
%
g
a
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n
,
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g
a
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n
s
R
s
13
.
F
i
n
d
t
h
e
a
c
t
u
a
l
p
r
i
c
e
o
f
t
h
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e
a
s
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t
a
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m
o
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t
.
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e
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t
,
R
s
100
a
n
d
t
h
e
l
e
m
o
n
s
e
t
,
R
s
80
Pls answer
Answer
2
Neha
Subject: Maths
, asked on 5/5/18
Explain 15 th question
Q15. 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish the same in 14 days. Find the time taken by 1 man alone to finish the work and that taken by one boy alone to finish the work.
Answer
1
Neha
Subject: Maths
, asked on 4/5/18
Solve this:
Q.12. A group consists of honest and extremely kind people. If 2 honest people and 7 extremely kind people can finish a piece of work in 4 days while 4 honest and 4 extremely kind people can finish it in 3 days then find the time taken by one honest people alone and that by extremely kind people alone to finish the work? Which of the above values you prefer?
Answer
1
Neha
Subject: Maths
, asked on 4/5/18
Solve
15
.
S
o
l
v
e
t
h
e
f
o
l
l
o
w
i
n
g
p
a
i
r
o
f
l
i
n
e
a
r
e
q
u
a
t
i
o
n
s
b
y
c
r
o
s
s
m
u
l
t
i
p
l
i
c
a
t
i
o
n
m
e
t
h
o
d
:
x
+
2
y
=
2
x
-
3
y
=
7
16
.
S
o
l
v
e
f
o
r
x
:
3
x
2
-
2
2
x
-
2
3
=
0
Answer
1
Neha
Subject: Maths
, asked on 3/5/18
Explain 9 th question??
Q.9. Find the values of m and n for which the following system of linear equations have infinitely many solutions.
a) 3x + 4y = 12
(m + n) x + 2(m - n) y = 5m - 1
(m = 5, n = - 1)
b) 2x - 3y = 7
(k + 1) x + (1 - 2k) y = 5k - 4.
(k = 5)
Answer
1
Neha
Subject: Maths
, asked on 3/5/18
Solve this:
7
.
S
o
l
v
e
:
2
3
x
+
2
y
+
3
3
x
-
2
y
=
17
5
5
3
x
+
2
y
+
1
3
x
-
2
y
=
2
8
.
S
o
l
v
e
:
1
2
x
+
2
y
+
5
3
3
x
-
2
y
=
-
3
2
5
4
x
+
2
y
-
3
5
3
x
-
2
y
=
61
60
Answer
1
Aaradhya Verma
Subject: Maths
, asked on 2/5/18
Solve this :
Q.
After covering 30 km there is some defects in rail engine and that's why it's speed reduce to
4
5
t
h
and that's why it reaches it's destination 45 min late. Had it happen after covering 18 km more the train reaches 9 min. earlier. Find the speed of train and distance of journey.
Answer
1
Aaradhya Verma
Subject: Maths
, asked on 2/5/18
Solve this
A
s
a
y
s
t
o
B
.
I
a
m
5
t
i
m
e
s
a
s
o
l
d
a
s
y
o
u
w
e
r
e
w
h
e
n
I
w
a
s
a
s
o
l
d
a
s
y
o
u
a
r
e
n
o
w
.
I
f
t
h
e
s
u
m
o
f
t
h
e
i
r
p
r
e
s
e
n
t
a
g
e
i
s
64
y
e
a
r
s
.
F
i
n
d
t
h
e
i
r
a
g
e
s
.
Answer
1
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Next
What are you looking for?
1) 2x-3y+13=0, 3x-2y+12=0
Q. Sum of the common but proper divisors of
(A) 597 (B) 599
(C) 598 (D) 615
(B) 5
Q.18. Solve :
2)
(x = y = ab)
Pls answer
Q15. 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish the same in 14 days. Find the time taken by 1 man alone to finish the work and that taken by one boy alone to finish the work.
Q.12. A group consists of honest and extremely kind people. If 2 honest people and 7 extremely kind people can finish a piece of work in 4 days while 4 honest and 4 extremely kind people can finish it in 3 days then find the time taken by one honest people alone and that by extremely kind people alone to finish the work? Which of the above values you prefer?
Q.9. Find the values of m and n for which the following system of linear equations have infinitely many solutions.
a) 3x + 4y = 12
(m + n) x + 2(m - n) y = 5m - 1
(m = 5, n = - 1)
b) 2x - 3y = 7
(k + 1) x + (1 - 2k) y = 5k - 4.
(k = 5)
Q. After covering 30 km there is some defects in rail engine and that's why it's speed reduce to and that's why it reaches it's destination 45 min late. Had it happen after covering 18 km more the train reaches 9 min. earlier. Find the speed of train and distance of journey.