3.
1 answer:
Answer:
12.2 cm
Step-by-step explanation:
A triangle is a polygon with three sides and three angles. There are different types of triangles such as obtuse, scalene, equilateral and isosceles triangle. We say that two triangles are similar if the ratio of their corresponding sides are equal and their corresponding angles are also equal.
Since both triangles are similar, then the ratio of their corresponding sides are equal. Hence:
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Answer:
B
Step-by-step explanation:
x² - 12x + 11 = 0 ( subtract 11 from both sides )
x² - 12x = - 11
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 6)x + 36 = - 11 + 36
(x - 6)² = 25 ( take square root of both sides )
x - 6 = ± = ± 5 ( add 6 to both sides )
x = 6 ± 5
Then
x = 6 - 5 = 1 ⇒ (1, 0 )
x = 6 + 5 = 11 ⇒ (11, 0 )
Let x = score on next test
(85+91+x)/3
90
x94
(85+91+x)/3
x