Answer:
x = 2
Step-by-step explanation
The main goal of solving this equation is getting the variable by itself.
For me personally, I prefer to have the variable on the left side of the equation, so I am just going to flip it over to look like this:
-6x - 4 = -16
Next, we must eliminate the constant on the left side of the equation, which is the four. So <u>add</u> four to both sides to get rid of the negative four. Remember, what you do to one side, you must also do to the other!
-6x - 4 = -16
<em>+4 +4</em>
Now, we have this:
-6x = -12
But wait! We aren't done yet! There is still the negative six with the variable. To get rid of it, we must divide both sides of the equations by negative six, as a negative divided by a negative is a positive. There is always an imaginary one next to a variable, so if we divide the negative six by itself, we will get one! Then, the variable will be by itself!
-6x = -12
<em>÷-6 ÷-6</em>
Now we have: x = 2
Remember that a negative divided by a negative is a positive, so the answer is 2, <u>not</u> negative two!
6.
Intersecting chords:
RT x ST = PT x TQ
2 x 6 = 3 x TQ
12 = 3TQ
TQ = 12/3
TQ = 4
7.
AD = 90 -BE = 90-18 = 72
ADE = 180. DE = 180 - AD = 180-72 = 108
AE = 180. AB = 180-18 = 162
DE = 108
BD = BE +DE = 18 + 108 = 126
DAB = 72 + 162 = 234
ADE = 90 degrees
8.
AB^2 = BC* (BC +x)
8^2 = 2 * (2 +x)
64 = 4 + 2x
60 = 2x
X = 60/2
X = 30
Answer:
B - 16466
C - 13362
total value - 35170
Step-by-step explanation:
to find B add 11124 to 5342 (11124+5342=16466)
to find C subtract 3104 from 16466 (16466-3104=13362)
total value - add them all together
Answer:
c
Step-by-step explanation:
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)