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telo118 [61]
3 years ago
14

one number is equal to two times a second number. two times the first number plus two times the second number is 24. if you let

x stand for the first number and y for the secoond, what are the two numbers?
Mathematics
1 answer:
ziro4ka [17]3 years ago
5 0
X = 2y
2x + 2y = 24
So if x = 2y that means 2x = 4y. Which means that 2x + 2y = 24 can be written as 4y + 2y = 24. Simplified to 6y = 24. Now we need to get 1y so we divide both sides by 6, 6y/6 = y and 24/6 = 4. so y = 4. so x= 2y can be written as x = 8.
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Kenny has $1,400 in the bank. He earns $150 every week at his afterschool job. What is the rate of change for the scenario descr
Vadim26 [7]
<span>The rate of change would be equal to the amount of money that Kenny is earning every week, since there are no expenses that are removing money from his account. In this case, it would be the $150 that he is putting into the account weekly.</span>
6 0
3 years ago
What is the equation of a line, in general form, that passes through point (1, -2) and has a slope of 1/3. 1.x - 3 y - 7 = 2.x -
Nutka1998 [239]

Answer:

x- 3y - 7=0

Step-by-step explanation:

the line in the slope-intercept form:

  • y= mx+b

m= 1/3 and point given (1, -2) by using which we find y-intercept:

  • b= y-1/3x
  • b= -2- 1/3*1= - 7/3
  • y= 1/3x- 7/3

General form of a line is: ax+by+c= 0

converting:

  • y= 1/3x- 7/3  ⇒  3y= x- 7  ⇒  x- 3y - 7=0
5 0
3 years ago
Question 27 <br> twice a number x added to another number y gives 35 <br><br> how ??
kenny6666 [7]

Answer:

y+2x=35

so how to get that answer if you divided 35/2= 17.5  so 17 *2= 34 +y= 35

y =1

round it down one number so y can equal 1 then you get 35

5 0
2 years ago
Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid $1,326 interest on $47,600 at 4%
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation

Note that

Interest is represented by I=1326

The principal is represented by P=47,600

Rate is R =4%

And Time is year

Interest is calculated using the formulae,

I =PRT/100

From the above formulae, time can be calculated as

T=100I/PR

T= 100×1326/(47600×4)

T= 132600/190400

T= 0.6964 years

To convert to days, multiply by 365(since those no of days make a year)

T= 0.6964×365=254 days

This was approximated to the nearest day

Answer is 254 days

6 0
3 years ago
Graph a system of equations to approximate the value of x, the rate of depreciation. Give your answer as a percent. about 4% abo
muminat

Answer:about 13%

Step-by-step explanation:

9 0
3 years ago
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