Answer:
~ 17.4
Step-by-step explanation:
The number of students per teacher in 1999 is approximately 17.4
(x4)(3x2 - 2)(4x2 + 5x)
= (12x3 - 2x4) (4x2 + 5x)
= 48x5 + 60x4 - 8x6 - 10x5
= - 8x6 + 48x5 - 10x5 + 60x4 ...//
= 2x4 ( - 4x2 + 24x - 5x + 30 )
= 2x4 ( - 4x2 + 19x - 30 ) ...//
Answer:
4/15 = x
Step-by-step explanation:
(2/6)(8/10) =x
(2)(8) / (6)(10)
16/60
Simplify.
4/15=x
Answer:
girls = 125
boys = 87
Step-by-step explanation:
Total number of students in the 8th grade class = 212
Let g represent girls and b represent boys
Number of girls, g = 2b -49
Note that boys and girls in the class give a total of 212
So,
g + b = 212 ....eq 1
Slot in the value of g in the equation
2b - 49 + b = 212
2b + b - 49 = 212
3b - 49 = 212
Add 49 to both sides
3b - 49 + 49 = 212 + 49
3b = 261
Divide both sides by the coefficient of b which is 3
b = 87
Now that we've found the number of boys, let's find that of girls
We will slot in the value of b in eq 1
g + 87 = 212
Subtract 87 from both sides
g + 87 - 87 = 212 - 87
g = 125
So the number of boys is 87 and the number of girls is 125
Answer:
Step-by-step explanation:
13. -2(4)= -8 14. 6(-5)= -30 15. 3(-5)(2)= -30
16. -12(4)= -48 17. -4(2)^2= -64 18. (-5)^2= -25
19. -5(-3)(4)= =60 20. 13(-5)(2)= -130. 21. 3(-3)= -9
Hope this helps!