zirconium16

04.02.2020 • 

Mathematics

Ineed !

"a quadrilateral is a trapezoid if and only if it has exactly one pair of parallel sides."

if this statement is true, then which of the following statements must also be true?

a. a trapezoid has exactly one pair of parallel sides if and only if it is a quadrilateral.

b.a quadrilateral has exactly one pair of parallel sides if and only if it is a trapezoid.

c.a quadrilateral is not a trapezoid if and only if it has exactly one pair of parallel sides.

d.a quadrilateral does not have exactly one pair of parallel sides if and only if it is a trapezoid.

Ответ:

aimeeoconnor20p6b43o

17.01.2022

Mathematics

---

I am 100% sure it’s B

Step-by-step explanation:

---

0,0(0 оценок)

Ответ:

sotoamerica0814

09.03.2020

Mathematics

---

Right triangle so 
Pythagorean theorem:
c^2 = a^2 + b^2
a = 6 and c =√117
to find b:
b^2 = c^2 - a^2
b^2 =  (√117)^2 -  6^2
b^2 = 117 - 36
b^2 = 81
b = √81
b = 9

x = 9 cm

---

0,0(0 оценок)