Which figure has just one line of symmetry? A B C D

Mathematics

2 answers:

babunello [35]3 years ago

7 0

Answer:

Step-by-step explanation:

That isosceles triangle has just one line of symmetry.

Ivahew [28]3 years ago

3 0

The answer to this is D, because it is an isosceles trapezoid which only has one line of symmetry. The line of symmetry is the perpendicular bisector of the base.

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Anastasy [175]

Answer:

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What is the value of this expression when a = 3 and b = -2?

weqwewe [10]

The first step: Simplify the expression with:

$\dfrac{x^n}{x^m}=x^{n-m}\\\\(xy)^n=x^ny^n\\\\(x^n)^m=x^{nm}\\\\x^{-n}=\dfrac{1}{x^n}$

$\left(\dfrac{3a^{-2}b^6}{2a^{-1}b^5}\right)^2=\left(\dfrac{3}{2}a^{-2-(-1)}b^{6-5}\right)^2=\left(\dfrac{3}{2}a^{-1}b^1\right)^2\\\\=\left(\dfrac{3}{2}\right)^2(a^{-1})^2b^2=\dfrac{9}{4}a^{-2}b^2=\dfrac{9b^2}{4a^2}$