Answer:
both are wrong
Step-by-step explanation:
raj's mistake: he did not multiply -2 by -5a/4
antonia's mistake: she went from -4a/4 to a which is wrong because -4/4 is -1.
Answer:
Two points no intersections
Step-by-step explanation:
Answer:
Area of plane surface of cylinder = 2772 sq.cm.
Step-by-step explanation:
Let r be the radius and h be the height of the cylinder.
Curved Surface Area = 1848 sq.cm
2πrh = 1848
2××rh = 1848
rh = 1848 × ×
rh = 294
Sum of radius and height = 35
r + h = 35 --- (1)
Now,
r - h =
=
=
=
= 7
r - h = 7 --- (2)
Adding (1) and (2),
2r = 42
r = 21 cm.
Area of the plane surface = 2 × π
= 2 × × 21 × 21
= 2772 sq.cm.
Answer:
6.75
Step-by-step explanation:
you cross multiply to get rid of the fractions
so it would be 4x = 27
divide the four on both sides
x = 27/4
x = 6.75
Answer:
Option A is correct.
Step-by-step explanation:
Between B and C, the value of height (y) remains constant, as shown as a horizontal line on the graph.