![eelebron0905](/avatars/25228.jpg)
eelebron0905
10.03.2020 •
Mathematics
Alana has run many marathons and keeps track of all of her finishing times. At a marathon last month, she finished in 290 minutes. The other day, she ran another marathon and finished with a time of 261 minutes. What is the percent of decrease in Alana's marathon time?
Solved
Show answers
More tips
- C Computers and Internet Make Easy Accessible Screenshots on iPad in Just a Few Minutes...
- H Health and Medicine Heartburn: Causes and Ways to Get Rid of It...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- W Work and Career Мерчендайзинг – все, что нужно знать...
- O Other Everything You Need to Know About Kudyabliks...
- F Food and Cooking How to cook crayfish? Everything you need to know...
- F Food and Cooking Homemade kvass: recipe and brewing process...
- H Health and Medicine How to Choose the Right Tanning Cream?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
Answers on questions: Mathematics
- M Mathematics PLEASE HELP: Click on the graph to choose the correct answer to the equation. x + y 0 (the ones with multiple are all separate I just couldn t attach all.)...
- M Mathematics Which number line represents -3 x 1? H -5 4 3 2 1 1 2 3 3 4 5...
- M Mathematics A rectangular prism is slice through its vertex and perpendicular to its base as shown in the figure what is the shape of the race salting two dimensional cross-section select...
- M Mathematics Kate and Nate play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty. Kate makes 6 goals and 3 penalties,...
- M Mathematics Referring to the labels from the graph you selected above....
- M Mathematics Question 9 of 10 In the diagram below, AB is parallel to CD. What is the value of y? A. 50 OB. 150 ООО C. 30 D. 60...
- M Mathematics Can someone help with this question ...
- M Mathematics Help please ASAP ASAP...
- M Mathematics Please help me this is due very soon!(Q13)...
- M Mathematics Find the vertex and the x-inter of the function given below. y = x^2 + 2x + 6...
Ответ:
the percentage of decrease in Alana's marathon time is 10%
Step-by-step explanation:
To start we have to know the fraction that represents what ran in the second marathon with respect to the first
to do it we have to divide the second marathon over the first
261/290 = 0.9
if we multiply this by 100 we will obtain the percentage
0.9 * 100 = 90%
if the first marathon was 100% and the second marathon was 90%
100% - 90% = 10%
the percentage of decrease in Alana's marathon time is 10%
Ответ:
x = 8
Step-by-step explanation:
4x - 12 = 20
+12 +12
4x = 32
x = 8