Sixth graders can have 4 groups of 4
seventh graders can have 5 groups of 4
Length of the outer frame: 4+2x
width of the outer frame: 3+2x
area of the outframe: (4+2x)(3+2x)=15
expand the equation: 12+8x+6x+12x^2=15
combine like terms: 4x^2+14x-3=0
The triangle BCD is an acute triangle
Answer:
x=63+86
Step-by-step explanation:
due to circle theory