X-intercept is when x = 0 so,
1.6y = 2.4
y = 1.5
y-intercept is when y = 0 so,
0.8x = 2.4
x = 3
(0, 1.5) and (3,0)
Answer:
Smaller Trapezoid: 12
Bigger Paralleogram: 24
Bigger Triangle: 22/40
Smaller Triangle : 2.75/ 5
Step-by-step explanation:
cross multiplication
Bigger Paralleogram: 9 x 16= 144 / 6= 24
Bigger Triangle: 5 x 22= 110 / 2.75 = 40
hope this helps
Step-by-step explanation:
x(x+2)-6(x+2)
x^2+2x-6x-12
x^2-4x-12
This is a pentagonal prism
- it has 6 faces
- 6 vertices
- 10 edges
2 is the lie and 1 and 3 are truths
Step-by-step explanation:
#1 : if you looking for x intercepts make y=0
0=2x^2+4x
0=2(x^2+2x)
Divide both sides by 2
0=x^2+2x
0=x(x+2)
Therefore x=0 or x=-2
1 is true
#2
We can sub in the value to see if it is true
2(-14,70)^2-42(-14.70)=1049,58
Therefore 2 is a lie
#3
we can solve
To find x we make y=0
0=3(x-5)^2-12
0=3(x^2-10x+25)-12
0=3x^2-30x+75-12
0=3x^2-30x+63
0=3(x^2-10x+21)
Divide both sides by 3
x^2-10x+21=0
Factorise
(x-7)(x-3)=0
Therefore x=7 or x=3
Therefore 3 is a truth