Step-by-step explanation:
l = length
w = width
l = 3w
perimeter p = 2l + 2w = 56
using the identity of the first equation
p = 2(3w) + 2w = 56
6w + 2w = 56
8w = 56
w = 7 cm
l = 3w = 3×7 = 21 cm
so, the area is
l×w = 21×7 = 147 cm²
Answer:
See below.
Step-by-step explanation:
A)
The end behavior is basically how the function behaves as it approaches negative or positive infinity.
As the function approaches negative infinity, we can see that the graph is going up. In other words:

As the function approaches positive infinity, we can see that the graph is going down. In other words:

B)
In even-degree polynomials, both ends of the graph will be going the same way. In this graph, the two ends are going opposite ways so this is an odd-degree function.
C)
The number of real zeros is simply the amount of times the graph crosses the x-axis. In the graph, the function does this three times. Thus, the number of real zeros is 3.
Answer:
? = 22y^2
Step-by-step explanation:
Ask yourself, what times 20y will get me 40y^3?
The answer to this would be 2y^2.
When you multiply something to the denominator, you also have to do so to the numerator. Therefore, you are required to multiply 2y^2 to the 11 to get your '?' value.
11 x 2y^2 = 22y^2
Answer:
3.1 kg
Step-by-step explanation:
4.3+5.3+ 6.8+ 2.6 + 3.2 +4.4 +4.8= 31.4 kg
Last fish= y
(31.4 + y)÷ 8= 4.3125
31.4 + y= 4.3125 x 8
y= 34.5 - 31.4
∴ y= 3.1 kg