Answer:
C, D, E
Step-by-step explanation:
Given
- 3x - 3 < 6 ( add 3 to both sides )
- 3x < 9
Divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity.
x > - 3
From the list 0, 2 and 4 are all greater than - 3, thus
C, D, E
Answer: 17.9
Step-by-step explanation:
Using Heron's formula:
Area of a triangle is given by:
√s(s-a)(s-b)(s-c)
Where a, b and c ara sides of the triangle and
S = (a+b+c) / 2
In the question above sides are :
XY=XZ= 20 and YZ=18
S = (20 + 20 + 18) / 2 = 58/2 = 29
Area = √29(29-20)(29-20)(29-18)
Area = √29(9)(9)(11)
Area = √25839
Area = 160.74513
Altitude = height(h)
Area = 0.5 × base × height
Base = yz = 18
160.74513 = 0.5 × 18 × h
160.74513 = 9 × h
h = 160.74513 / 9
h = 17.9 (3 s.f)
Length=1.5 m=1.5 m(100 cm/m)=150 cm
breadth=80 cm
area=length x breadth
area=(150 cm)(80 cm)=12000 cm²
answer: 12000 cm²