Answer:
B. 3⁄4
Step-by-step explanation:
In a proper fraction the numerator is less than the denominator.
Option A is not a proper fraction because the numerator is equal to the denominator.
Option B is a proper fraction because the numerator (3) is less than the denominator (4)
Option C is not a proper fraction since 4>3
Option D is not a proper fraction because 7>6
3x + 1 + 5x = 7 +15 + 7x
Move unknown terms to the left of the equal with changed sign and the known terms to the right of the equal with changed sign.
3x + 5x - 7x = 7 + 15 - 1
x = 21
Answer:
20,9
Step-by-step explanation:
this is how I did=x=1st, y=2nd; x=4y-16 and x+y=29; thus 4y-16+y=29; 5y-16=29; 5y=45; y=45/5=9, once you know y=9, put in equation, 4y-16=×, (4*9)-16=x, 36-16=x, 20=x
Answer:
1 3/8
Step-by-step explanation:
Possible derivation:
d/dx(1/8 (-2 + 3 x))
Factor out constants:
= 1/8 (d/dx(-2 + 3 x))
Differentiate the sum term by term and factor out constants:
= 1/8 d/dx(-2) + 3 d/dx(x)
The derivative of -2 is zero:
= 1/8 (3 (d/dx(x)) + 0)
Simplify the expression:
= 3/8 (d/dx(x))
The derivative of x is 1:
Answer: = 1 3/8