How much pure acid is needed to mix with 18L of 30% acid to increase the concentration of 50% acid

Explain 2 different ways why - 3.25< - 1.4

Kevin can ride his bike 2 miles in 12 minutes. At this rate, how many miles can he ride in 60 minutes?

Which is larger 80% or 1/8

F (x) = x^3+x^2-x-1 identify its relative maximum and minimum

If n is a positive integer greater than 6, what is the remainder when n is divided by 6? (1) n2 - 1 is not divisible by 3. (2) n2 - 1 is even.

A wave has a frequency of 100 Hz and a wavelength of 0.30 m. How do you find the wave speed?

Miguel made a histogram to show the ages of all participants involved in a fundraiser which of the histogram did Miguel forget to create

Y and x have a proportional relationship, and y = 25 when x = 60. What is the value of x when y = 30? -25 -36 -50 -72

2. During a 5-day training at your department, the number of visitors tripled each day. If the training started on a Monday with 345 attendees, what was the attendance on Thursday?

If prices increase at a monthly rate of 3.8 %, by what percentage do they increase in a year?