Nisha did the work below to solve an equation.

step 1 7 b + 3.2 b minus 5 = 18.92
step 2 10.2 b minus 5 = 18.92
step 3 5.2 b = 18.92
step 4 b = 3.64

in which step did nisha make her first error?
step 1
step 2
step 3
step 4

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

What is the value of the discrimination for the quadratic equation 0=×2+2+×2