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mcckenziee
03.05.2020 •
Mathematics
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Ответ:
23. x= -2/5 x= -5
24. x= 3/4 x= -1/6
25. x= 7/3. x= -5/4
26. x= 3 x= -2/3
27. x= 1. x= -2/7
28. x= 9/4. x= -1/3
29. x= 2/5 x= 1/3
30. x= 2/3 x= 1/2
Ответ:
PQRS is a rectangle.
PS = 5cm
PQ = 12cm
To Find:The length of qr ,sr and the two diagonals pr and qs.
Solution:Opposite sides of a rectangle are equal.
QR = PS = 5cm
SR = PQ = 12cm
By using Pythagoras Theorem, we get
PR = √PS^2 + SR^2
or, PR = √25 + 144
or, PR = √169
or, PR = 13cm
Diagonals of a rectangle are equal.
QS = PR = 13cm
QR = 5 cm
SR = 12 cm
PR = 13 cm
QS = 13 cm