Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?
Given: m = (y2 - y1)/x2 - x1), y = mx + b, and the points (-2, 2) and (2, 4). Find the y-intercept. Write the equation of the line in slope-intercept form
The sum of the digits of a two-digit number is 9. If the digits are reversed, the new number is 27 less than the original. Find the original number.
It takes Gary 1 hour to milk all the cows, and it takes Dana 1.5 hours. How long will it take them to do the job together? Please explain all the steps and models/equations used. Thanks so much.
when i was 2 years old my sister was half in my age now i am 100 years old then how old is my sister?
the volumes of two spheres are 729 in3 and 27 in3. what is the ratio of their radii, rounded to the nearest whole number?
Use the arithmetic sequence of numbers 1, 3, 5, 7, 9,.to find the following: a) What is d, the difference between any two consecutive terms? b) Using the formula for the nth term of an arithmetic sequence, what is 101st term? c) Using the formula for the sum of an arithmetic sequence, what is the sum of the first 20 terms?
Write the equation of the line passing through the given point with the indicated slope. Give your results in slope-intercept form. Point : (0,5) Slope: m=-3/5
