Answer:
C) {6+√43, 6-√43}
Step-by-step explanation:
Applying,
x = [-b±√(b²-4ac)]/2a.................... Equation 1
From the question,
Given: a = 1, b = -12, c = 7
Substitute these values into equation 1
x = [-(-12)±√(-12²+4×1×7)]/2×1
x = [12±√(144+28)]/2
x = [12±√172]/2
either,
x = (12-√172)/2
x = (12-2√43)2
x = (6+√43)
or
x = (12+√172)/2
x = (12+2√43)/2
x = (6+√43)
Hence,
The right answer is C). {6+√43, 6-√43}
In a equilateral triangle, all sides are equal.
hence each slant side = 12cm
to find the height of the triangle :
use Pythagoras’ Theorem (A^2 + B^2 = C^2)
A = height
B = 6
C = 12
A^2 = 108
A = 10.392... (5s.f.)
area = ½ x base x height
= ½ x 6 x 10.392...
= 31.176
= 31.2 (3s.f.)
Answer: 122509
Step-by-step explanation:
lol
Answer:7x^14
Step-by-step explanation: You multiply 2X to the power of 2×7 which equals 14 X to the power 14 and then seven times -3 equals -21
Answer:
104.12 > 104.002
Step-by-step explanation: