Answer:
106 m²
Step-by-step explanation:
we can see in the figure that it is made up of one square and one trapezium
Formula to calculate the area of this polygon
Area of square + Area of trapezium
Area of square
side²
5²
25
Area of trapezium
<em>here a and b is the parallel sides</em>
<em> h is the height of trapezium </em>
(6+3)(9)
(9)(9)
81
Area of the polygon
25 + 81
106
The constant of variation is 1.3 kg per m³
Step-by-step explanation:
Direct variation is when one variable is equal to a constant times
another variable, with no additions or subtractions alongside
If y is directly proportional with x, then
- y ∝ x
- y = k x, where k is the constant of variation
- The graph of the variation is a line passes through the origin
∵ The weight of air is directly proportional to its volume
∴ The weight (w) ∝ the volume (v)
∴ w = k v
∵ w = 13 kg
∵ v = 10 m³
- Substitute these values in the rule of variation above to find k
∴ 13 = k (10)
∴ 13 = 10 k
- Divide both sides by 10
∴ k = 1.3
The constant of variation is 1.3 kg per m³
Learn more:
You can learn more about direct and inverse proportion in brainly.com/question/10708697
#LearnwithBrainly
Answer:
Presidential democracy
Step-by-step explanation:
Answer:
1) Solutions are x = 3 and x = 5/3
2) Solution are x ≤ 13/2 and x ≤ -3/2
Step-by-step explanation:
1) Given absolute inequality,
|3x-7| = 2
⇒ 3x - 7 = ± 2
⇒ 3x = 7 ± 2
2) l 2x-5 l ≤ 8
⇒ 2x-5 ≤ ±8
⇒ 2x ≤ 5 ± 8
Answer:
um I think it's f I'm not sure tho
