1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vladimir2022 [97]
3 years ago
5

The sum of a number and 3 times a second number is represented by a+3b= 39. The sum of half the of the first number and 1/3 of t

he second number is represented by 1/2a+1/3b=9. What is the first number a? What is the second number b?
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
5 0
If we multiply the second equation by 2 we get

a + 2/3b = 18 ............(3)
a + 3b = 39................(1) 
(1) - (3) gives:-
7/3 b = 21
b =  21 * 3/7 = 9 

plug b = 9 in equation (1):-

a + 3(9) = 39 

a = 39-27 = 12 

Answer:- a = 12 and b = 9.
You might be interested in
PLEASE HELP WILL MARK BRAINLIEST!!!
Gala2k [10]

     The Unit Rate is the start of the slope/the y-intercept of the slope.To find that we need to make the slope first.

(shown in the first picture)

      We can see that the slope is a linear function/a straight line, and if we just follow the line down the slope we can see that it has a y-intercept/unit rate of 2/3 of 1 whole.

(the second picture)

6 0
3 years ago
Imagine you had 40 one-metre sections of fencing.
Darya [45]

Answer: If I’m not mistaken, the largest area is 75 m2 and the smallest is 2 m2

Step-by-step explanation:

For both : since they are asking for the area, you should calculate the perimeter.

So for the largest area, since you know that you have 40 fences, and each are 1 meter long, and they’re also asking for the largest rectangular area, this means that only the opposite sides will have the same length, so in order to divide the rectangle with the 40 one-meter fences, the biggest sides have to be 15 meters long (so for both : 15x2=30 meters). Then you deduct from 40, 30 : 40-30 = 10 which then you can devide by 2 and find 5 + 5 and that means that the 2 smallest sides will be 5 meters long each. Then finally to calculate the perimeter you should do the biggest side multiplied by the smallest side : 15 x 5 and you find 75 m2 (squaremeters), if I’m not mistaken.

And for the smallest area you take the smallest possibilities knowing that only the opposite sides should have the same length and not all of them, so you do 1 x 2 and you find 2 m2.

8 0
3 years ago
Can you help me plz
Gelneren [198K]

i think the answer would be C

4 0
4 years ago
Find the missing angles
o-na [289]

Answer:

<b= 36 degrees, <c= 144 degrees

Step-by-step explanation:

144 and b are supplementary meaning they add up to 180.

144 and c are vertical angles meaning they are congruent.

8 0
3 years ago
Plz help me I really need help !!!!!!!!!!
Delvig [45]

Answer:

What would you like me to help you with? ╰_╯

3 0
3 years ago
Other questions:
  • I WILL MAKE YOU BRAINLIEST! 46 POINTS!!!!! PLEASE HURRY! BRAINLIEST, THANKS, AND 5 STARS! PROMISE!
    11·1 answer
  • 14+6 :)) ILL GIVE BRAINLIEST ITS 100 POINTS :))
    11·1 answer
  • Order the group of quadratic functions from widest to narrowest graph.
    6·2 answers
  • How to solve sum of integers between square roots?
    7·1 answer
  • T is the midpoint of PQ. PT = (6x-3) and QT = (2x+5)
    11·2 answers
  • An area of a square is 16cm2. Find the missing side
    14·1 answer
  • Please help promptly
    13·1 answer
  • What is the measure of BCD
    6·1 answer
  • What is the general form of the equation for the given circle?
    9·1 answer
  • HELPSKANDNEKSJJF nakajf
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!