Answer: Concave down
Explanation:
An example is shown below. We have the concave down parabola 
marked in red. The trapezoidal sum is in blue. The three trapezoids combine to something just a bit smaller than the true area under the curve from x = -2 to x = 1. Therefore, this trapezoidal sum is an underestimate of the true area under the curve.
Every part of each trapezoid is completely below the red curve. In other words, no part of the blue pieces spill above the parabola.
Answer:
Ans. 64 cm
Step-by-step explanation:
we have to use the ratio of actual distance and distance on projection here.
Given,
Ratio of distance in projection and actual distance is 1:200,000
That means, 1 cm in projection will be 200,000 cm in actual distance.
Here,
Actual distance is 128 km.
we know, 1 km=100,000 cm
Now, 128 km=128,00,000 cm
So, actual distance is 128 00 000 cm.
Since, 200000 cm in actual distance means 1 cm in projection.
So,
for 12800000 cm in actual distance means 12800000/200000 cm in projection.
So, in the screen distance will be-
12800000 / 200000
=64 cm
Answer:
Not today you thought but it is 48
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
On the top there are 4 x and 1 one.
On the left, there are 2 x and 3 one.
You put those together and you get (4x+1)(2x+3), which is C.
You could also check.
Answer:
35
Step-by-step explanation:
360-(155×2)=50
50÷2=25
180-25-25=130
180-35=145
180-145=35
