Answer:
x=−7
Step-by-step explanation:
Step 1: Add 5 to both sides.
−3x−5+5=16+5
−3x=21
Step 2: Divide both sides by -3.
−3x/−3=21/−3
Answer :
Let the first term of both the terms be 
and last term be 
Now, by using the mid point formula to find the mid point of the segment -
Now, by substituting the values of both x and y -
Adding -7 and 6 -
Now, move the negative in front of the fraction -
4x + 6 = 9 is the equation
Answer:
D. 0.925x + 0.88y = 0.91(x + y)
Step-by-step explanation:
The important point to remember is that the total mass of pure silver is the same on each side of the equation.
0.925x = mass of pure silver in first alloy
0.88 y = mass of pure silver in second alloy
The final alloy has a mass of (x + y) g and is 91 % pure silver, so
0.925x + 0.88y = 0.91(x + y)
Answer:
2x+23
Step-by-step explanation:
