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13 questions
How is the distance formula correctly written:
d = (y1 − y2)2 −(x2 − x1)2
d = (x2 − x1)2 + (y2 − y1 )2
d = (y1 − y 2)2 + (x2 − x1)2
d = (x)2− (y)2
A(3,1) B(-2,-1) written correctly is:
(−2−3)2 + (−1−1)2
(1−3)2 + (−1−2)2
(−2−3)2 − (−1−1)2
(−2−3)2 − (−1−1)2
Find the midpoint of the segment with the endpoints:(6, 7) and (6, -5)
(0, -1)
(6, 1)
(1, 6)
(0, 1)
The x coordinate of a point P is twice its y- coordinate. If P is equidistant from Q(2,-5) and R(-3,6), find the x coordinate of P.
Find the ratio in which y-axis divides the line segment joining the points A(5,-6) and B(-1,-4).
Show that 3 7 is an irrational number.
Write all the steps. The steps will be checked and scored later.
Find whether the following pair of linear equations is consistent or inconsistent :
3x+2y=8
6x−4y=9
consistent
inconsistent
17×5×11×3×2+2×11 Explain why the above is a composite number.
Write the explanation. The question will be marked later.
3x−y=7 2x+5y+1=0
Solve the above
x=2, y=-1
x=-1, y=2
x=2, y=2
x=-1, y=-1
A boat goes 30km upstream and 44 km downstream in 10 hours. The same boat goes 40km upstream and 55km downstream in 13 hours. what is the speed of boat?
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