120+25x=45x
Step 1: Simplify both sides of the equation.
25x+120=45x
Step 2: Subtract 45x from both sides.
25x+120−45x=45x−45x
−20x+120=0
Step 3: Subtract 120 from both sides.
−20x+120−120=0−120
−20x=−120
Step 4: Divide both sides by -20.
−20x
−20
=
−120
−20
x=6
Answer:
x=6
I think it's B. 168 units
Because I multiplied them all together and halved the answer
Answer:
427 feet.
Step-by-step explanation:
She has 30 pies. She needs 5 more pies.
1 cup = 1 pie
So 5 cups
Answer:
z = - 0.33
Step-by-step explanation:
Given that:
Mean (μ) = 73, standard deviation (σ) = 3.0
Z score is a measure in statistics to determine the number of standard deviation a value is above or below the mean of what is measured. If the value is above the mean it is positive but if it is below the mean it is negative. It is given by the equation:
![z=\frac{x-\mu}{\sigma}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D)
To calculate z-score for Umaima's exam grade, we need to calculate the z score of 72
For x = 72, the z score is:
![z=\frac{x-\mu}{\sigma}=\frac{72-73}{3} =-0.33](https://tex.z-dn.net/?f=z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D%3D%5Cfrac%7B72-73%7D%7B3%7D%20%3D-0.33)
z = - 0.33