Answer:
1) two pairs of parallel sides
2) four right angles and all sides congruent
3) all sides congruent
Step-by-step explanation:
#27.
First cross multiply
2 (2a-3) = 3 (a-1)
next use the distribute property on both sides
4a - 6 = 3a - 3
combine like terms, subtract 3a from both sides and add 6 to both sides
a = 3
#28
cross multiply
3x = 4, then divide both sides by 3
x = 4/3
#30
add 1/4 to both sides
3/x = 1/2 + 1/4, find a common denominator for the right side fractions
3/x = 2/4 + 1/4 = 3/4
therefore, x = 4
Answer:
75
Step-by-step explanation:
Let x be the total points
66/x = 0.88 (88%)
x = 75
La respuesta es 112, es una regla de tres simples
Answer:
4 times 312 = 1,248 = 312 times 4 = 1,248
Hope this helps, sorry if it didn't.
