Answer:
The speed of Sara is 78.4 km/h.
Step- by-step explanation:
Manuel and Sara travel a certain distance, and the times they use are in the ratio 21/15. Manuel's speed is 56km / h. What is Sara's speed?
Let the distance is d.
speed of Manuel = 56 km/h
time taken by Manuel = 21 t
time taken by Sara = 15 t
Let the speed of Sara is v.
Distance = speed x time
For Manuel:
d = 56 x 21 t ..... (1)
For Sara:
d = v x 15 t ..... (2)
From (1) and (2)
56 x 21 t = v x 15 t
v = 78.4 km/h
The slope of line AB, BC, CD and AD are 1, -1/6, 2, -4/6 respectively. Quadrilateral ABCD with the given vertices is not a parallelogram because neither pair of opposite sides is parallel. Option C
<h3>How to determine the slope</h3>
Formula for slope is given as;
Slope =
A(-4 -1)
B(-1 2)
C(5 1)
D(1 -3)
a. Slope of line AB = = = = 1
b. Slope of line BC = =
c. Slope of line CD = = = 2
d. Slope of line AD = =
Quadrilateral ABCD with the given vertices is not a parallelogram because neither pair of opposite sides is parallel. Option C
Thus, the slope of line AB, BC, CD and AD are 1, -1/6, 2, -4/6 respectively.
and quadrilateral ABCD with the given vertices is not a parallelogram because neither pair of opposite sides is parallel. Option C
Learn more about a parallelogram here:
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The simplified expression is c^5
Answer:
18
Step-by-step explanation:
60% 0f 30 is 18
D. 18