Find the value of x such that the data set has the given mean. 99, 86, 76, 95 x; mean 91

Step-by-step explanation:

We have been given a data 99,86,76,95,x

And mean =91

we have a formula for mean as below:

Here number of observations we have are 5

So, substituting values in the formula we get

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

the answer would be c:   ax + b = ax + c

step-by-step explanation: