![sdolina5](/avatars/9032.jpg)
sdolina5
26.06.2020 •
Mathematics
Solve the problem.
43) The sum of two numbers is 56. The second number is three times as large as the first number. What are the numbers?
A) 11,45
B) 14,42
C) 12,36
D) 12,44
Solved
Show answers
More tips
- P Photography and Videography How to Choose a Digital Camera?...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- F Food and Cooking How to Calculate the Gender of Your Child with Blood?...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Which of the following is a true statement about functions...
- H History What religion dominated western and eastern europe in 1050?...
- B Business Lindon Company is the exclusive distributor for an automotive product that sells for $54.00 per unit and has a CM ratio of 30%. The company’s fixed expenses are $388,800 per...
- M Mathematics In Store A, a book that regularly sells for $24.99 is on sale at 15% off. In Store B the same book regularly sells for $27.99 and is on sale at 25% off. Which store sells...
- M Mathematics The position function of an object moving along a straight line is given by s=f(t). the average velocity of an object over the time interval [a,b] is the average rate of change...
Ответ:
14,42
Step-by-step explanation:
x + y = 56
x = 3y
Substitute for x in the first equation:
x + y = 56
x = 3y
3y + y = 56
Combine like terms:
4y = 56
Divide both sides by 4:
y = 14
So if y = 14, and x = 3y, then x = 42.
Now substitute for both x and y in both of the original equations to prove they are the correct values.
x + y = 56
x = 42
y = 4
42 + 14 = 56
56 = 56
x = 3y
x = 42
y = 14
42 = 3*14
42 = 42
I hope this helped. I am sorry if you get this wrong.
Ответ: