Answer:
2/3 or 0.66
Step-by-step explanation:
=>5 1/4 / 7 7/8
=>21/4 / 63/8
=>21/4 * 8/63
=>2/3 or 0.66
Answer:
Step-by-step explanation:
First add the shoes and the toys: 63+54 = $117
Second subtract 45 dollars from $117 = 72
Third divide 72 by 9 = 8 weeks
Answer: 8 weeks
3(4x+2)
(3*4x) + (3*2)
12x+6
2(6x+3)
(2*6x) + (2*3)
12x+6
These 2 equations are equivalent because of the distributive property that you have to apply to each equation to get your answer
140 quarts of oil
49 quarts÷7 cars=7 quarts per car
7 quarts×20 cars=140 quarts
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