Our missing number we are solving for is X.
We are told x will equal 2x (number doubled) plus -16.
x = 2x + -16 We want to move the smaller variable to the right to sit with the larger one and move the -16 to the left by subtracting it from both sides. Remember that subtracting a negative is the same as adding it. So essentially we add 16 to both sides.
16 = 2x - x Combine the variables
16 = x or x = 16
I chose to put the variable on the left in this problem to avoid having a -x on the left side. It doesn't matter which side the variable is on to solve, but when you state it - we usually say x = 16.
Answer:
B
Step-by-step explanation:
Comment
√15 = 3.87
<u>√12 = 3.46 </u> Subtract these 2
Difference = 0.41
Answer:
-8
Step-by-step explanation:
you add 5 to -7 to get -2
7 x -1 is -7
so x = -1
8 x -1 = -8
Answer: D.
The y-intercept of the line means that the weight of the empty jar is about 160 grams.
Step-by-step explanation:
We know that the equation of line is given by
, where m is the slope of the line and c is the initial amount .
For the given linear equation 
where x is the number of marbles added, and y (dependent variable ) is the weight of the jar.
Slope of line m= 4.95 which is approximately 5 , thus, for every increase in marble, weight of jar increased by approx 5 gram.
To find the y intercept , put x=0, we get
y=160.03 which means if there is no marble then the weight of the jar = 160.03 grams or approximately 160 grams.
Thus, The y-intercept of the line means that the weight of the empty jar is about 160 grams.