7th grade Math

posted by .

Over the summer in Albany, New York, the depth of the local reservoir decreased 15 inches. If the water depth decreased by 3 inches each week, how many weeks did it take for this change to occur?

HELP ASAP THX

  • 7th grade Math -

    The answer would be 5 weeks, because you can divide the 15 inches by 3 inches lost per week.

  • 7th grade Math -

    Think of it as losing three inches every week for five weeks, so what times 3 would be equal to 15?
    5

  • 7th grade Math -

    thx for helping but i already figured it out but thx and it's right

  • 7th grade Math -

    Alright. Just ask again anytime you need help!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    I have a table with this info. plant growth: Week 1 - 1 inch, week2 -4 inches, week 3 - 6 inches, week 4 - 11 inches, week 5 - 14 inches Question is: would you expect the plants height to be 10 inches, 16 inches, or 30 inches at week …
  2. Geometry

    A flush tank on a toilet is rectangular with dimensions of 21 inches by 6.5 inches and contain water to a depth of 12 inches. How many gallons of water per flush will be saved if the depth of the water is reduced by one-third?
  3. Math

    there was very little rain in Austin one summer. In june, the depth of lake travis fell 3 inches from its usual level. In july, it went down another 5 inches. in August it finally rained adding 2 inches to the lake depth. How many …
  4. College Algebra

    The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many …
  5. Math

    During a week-long dry spell,the water level in a pond decreased by 4 inches per day except for two days when it decreased by half of that amount. How much did the water level decrease in the pond in one week?
  6. algebra

    The Kwon family has a rainwater catchment system they use to water their garden. After 3 days without rain, the depth of water in the tank is 63 inches. After 5 days, the depth is 57 inches. What will the depth of water in the tank …
  7. algebra

    The Kwon family has a rainwater catchment system they use to water their garden. After 3 days without rain, the depth of water in the tanks is 63 inches. After 5 days, the depth is 57 inches. Write an equation in point-slope form describing …
  8. Algebra

    The water in a pond is 8 feet deep but the water level is dropping a rate of 1/2 inch per week. Write a equation for the depth in inches,d, of the pond after w weeks...
  9. math

    The inside of a trough is shaped like a rectangular solid, 25 feet long, 6 inches wide, and filled with water to a depth of 35 inches. If we wish to raise the depth of the water to 38 inches, how much water must be let into the tank?
  10. math

    The rate of change in the number of miles of road cleared per hour by a snowplow is inversely proportional to the depth of the snow. Given that 24 miles per hour are cleared when the depth of the snow is 2.2 inches and 13 miles per …

More Similar Questions