4 years ago

The Square Root Property is used in solving incomplete quadratic equations where b is equal to _______.

Mathematics

2 answers:

SOVA2 [1]4 years ago

7 0

Answer:

D. 3 and

because 3 is irrartional and to find the exact square root is almost impossible

Vadim26 [7]4 years ago

3 0

Answer: A. Zero

Step-by-step explanation: If the quadratic equation is incomplete, b will always equal 0.

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Find the area of the blue area if each<br> square represents 1.5 square meters.

Anni [7]

Check the picture below.

so the picture has a rectangle that is 8 units high and 12 units wide, and it has a couple of "empty" trapezoids, with a height of 5 and "bases" of 9 and 3.

now, if we just take the whole area of the rectangle and then subtract the area of those two trapezoids, what's leftover is the blue area.

$\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h=height\\ a,b=\stackrel{parallel~sides}{bases}\\[-0.5em] \hrulefill\\ h=5\\ a=9\\ b=3 \end{cases}\implies \begin{array}{llll} A=\cfrac{5(9+3)}{2}\implies A=30 \end{array} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\large Areas}}{\stackrel{rectangle}{(12\cdot 8)}~~ -~~\stackrel{\textit{two trapezoids}}{2(30)}}\implies 96-60\implies 36$