![jjelzy](/avatars/8497.jpg)
jjelzy
21.12.2019 •
Mathematics
The sum of three numbers is 98 . the first number is 7 less than the second. the third number is 3 times the second. what are the numbers?
Solved
Show answers
More tips
- H Health and Medicine What Are the Best Vitamins? A Scientific View on Vitamin Supplements...
- F Food and Cooking From Latte to Espresso: Which Coffee Drink is the Most Popular on Earth?...
- C Computers and Internet How to Set Up Internet on iPhone? Detailed Guide with Step-by-Step Instructions...
- P Philosophy 8 привычек, чтобы достичь счастливой жизни...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- G Goods and services How to Choose the Right Iron: Purchase Tips...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- H Health and Medicine How to Choose the Right Glasses?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine AKDS Vaccination: Ensure Your Child s Safety...
Answers on questions: Mathematics
- M Mathematics Either I m late to school or I m early... most likely late.. :D...
- M Mathematics MATH PHYS PLEASE HELP MATH PHYS MATH PHYS HELPPPPPPPP PLEASEEE MAYH PHYS...
- M Mathematics What is 20x - y = -40 in slope-intercept form?...
- M Mathematics The cost of renting a canoebtonuse on River Y costs $35. The cost of renting a canoe to use on River Z costs $4 per hour plus a $15 deposit. The total cost, c, of renting a canoe...
- M Mathematics Is the following relation a function? 27 1A X -5 -4 -3 -2 A1+1 1 2 3 4 2 5 picture shown above .....
- M Mathematics Will mark the brainliest...
- M Mathematics children at recess are either playing or sitting down. The ratio of kids playing to resting is 3:1 If there are 8 children resting, Then how many children are playing?...
- M Mathematics Which data set could be represented by the box plot shown below?...
- M Mathematics A bicycle shop charges customs $20 plus $4.50 per hour to rent a bicycle. Rylie paid $47 to rent a bicycle. For how many hours did Rylie rent the bicycle? a) 5 hours b) 6 hours c)...
- M Mathematics A bag contains 16 peaches. How many bags are needed for 264 peaches?...
Ответ:
14, 21, and 63
Step-by-step explanation:
we can set the three unknown numbers as x, y, and z
so
x + y + z =98
now we are given that the first (x) is seven less than the second (y)
x = y - 7
the third number (z) is three times the second (y)
z = 3y
since we have an equation for z and x in terms of y, we can plug it into the first equation and solve for y.
(y-7) + y + (3y) =98
y - 7 + y + 3y =98
y + y + 3y =105
5y = 105
y=21
now that we know y, we can plug its value into either the second or the third equation to find x or z (I chose to find z first)
z = 3y
z = 3(21)
z = 63
now we can plug in y to find x
x = y - 7
x = 21 - 7
x = 14
so the three numbers should be 14, 21, and 63
Ответ:
Answer
what you mean
Step-by-step explanation: