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1 answer:
Answer:
20. The sum of a number and ten is three times the number
21. The sum of the product of two and a number and the product of four and another number is twenty
22. Four times the sum of a and b is the product of nine times a
23. The product of six and a number subtracted from eight is the sum of four and two times a number
24. The difference of the square of s and the square of n is equal to the product of two and b.
25. d
26. f
27. c
28. b
29. a
30. e
31. Real, Irrational
32. Real, Rational, Integer
33. Real, Rational
34. -
35.-
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Let KLMN be a trapezoid (see added picture). From the point M put down the trapezoid height MP, then quadrilateral KLMP is square and KP=MP=10.
A triangle MPN is right and <span>isosceles, because
</span>m∠N=45^{0}, m∠P=90^{0}, so m∠M=180^{0}-45^{0}-90^{0}=45^{0}.Then PN=MP=10.
The ttapezoid side KN consists of two parts KP and PN, each of them is equal to 10, then KN=20 units.
Area of KLMN is egual to
sq. units.
A triangle MPN is right and <span>isosceles, because
</span>m∠N=45^{0}, m∠P=90^{0}, so m∠M=180^{0}-45^{0}-90^{0}=45^{0}.Then PN=MP=10.
The ttapezoid side KN consists of two parts KP and PN, each of them is equal to 10, then KN=20 units.
Area of KLMN is egual to