The lateral area is 192 cm².
The lateral area is the area of all of the lateral faces. Since the base of the pyramid is a quadrilateral, there are 4 lateral faces. The area of one lateral face is 48 cm²; this means the lateral area is 48(4) = 192 cm².
Answer:
∠ C = 36°
∠ D= 81°
∠ DEC= 63°
Step-by-step explanation:
<em>The exterior angle of a triangle is equal to the sum of the interior opposite angles. </em>
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∴ (11y + 4) + (5y + 1) = 117
11y + 4 + 5y + 1 = 117
16y + 5 = 117
16y = 117-5
16y = 112
y = 112÷16
y = 7
∠ C = 5×(7) + 1 = 36°
∠ D = 11×(7) + 4 = 81°
∠ DEC = 180- 117 = 63°
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<span>slope intercept form is : y = mx + b your looking for the slope it is just (y-y/x-x)
in other words... -2/36</span>
Answer:
Step-by-step explanation:
We need to find the sum of 
and 
first.
Adding +
Combining like terms, we get
-2ab+2ab = 0
Therefore,
.
Now, we need to find the sum of 
.
Adding 
.
Combining like terms, we get
.
Therefore,
Now, subtracting
.
Distributing minus sign over second parenthesis, we get
.
Combining like terms,
Therefore,
.
Therefore, the difference of the sum of + and 
is 
