Answer:
im not great at math but i believe the answer is 24mm^2
Step-by-step explanation:
triangle area formula- (B*H)/2
large triangle:
6+4+2=12
H=12
B=5
5*12=60
60/2=30
small trangle:
4*3=12
12/2=6
30-6=24
therefore answer should be 24mm^2
Answer:
0.2 g/mL
Step-by-step explanation:
Density is equal to the mass of substance divided by its volume.
Answer:
2x/(x+3) +3/(x-3) = 8/(x^2
[2x(x-3) +3(x+3)]\( x^2 - 9) =8/(x^2 -9)
2x^2 -6x +3x +9=8 (x^2 -9) /(x^2 -9)
2 x^2 -3x +9 -8=0
2 x^2 -3x +1 =0
2x^2 -2x -1x +1 =0
2x(x-1) -1(x-1)=0
(x-1)(2x-1)=0
either, or, 2x-1=0
x-1 =0 2x =1
x =1 x= 1/2
hence, x= 1, 1/2
4(x+2)=3(x-2)
Multiply the first bracket by 4
Multiply the second bracket by 3
4x+8=3x-6
Move 3x to the left hand side, whenever moving a number with a letter the sign changes ( positive 3x to negative 3x)
4x-3x+8=3x-3x-6
x+8=-6
Move positive 8 to the right hand side
x+8-8=-6-8
x=-14
Check answer by using substitution method
Use x=-14 into both of the equations
4(-14+2)=3(-14-2)
-56+8=-42-6
-48=-48
Answer is -14- D)
To get 70% of 60, you multiply 0.7 by 60 to get 42, so 42 students own a pet
