Let
°
°
°
°
we know that
The interior angles formed by the sides of a quadrilateral have measures that sum to 360°
so
°

therefore
the answer is

3.9 * 5.3 ≈ 4 * 5
≈20
Well after doing your multiplication, you can place your decimal point by knowing that from estimation the answer is around 20.
So you can place your decimal point after the first two digits from the left.
Answer:
-2
Step-by-step explanation:
The equation of a line in slope intercept form is
y = mx +b where m is the slope and b is the y intercept
y = -2x+4
The slope is -2 and the y intercept is 4
Let's take the 2 numbers are a and b.
a + b =14
if a > b
a - 3b = -2
Subtract both numbers
4b = 16
b = 4
lesser number is 4.