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
Margaret [11]
3 years ago
13

Please anybody help please

Mathematics
1 answer:
wel3 years ago
5 0

Answer:

x= -3 and y = 6

Step-by-step explanation:

so basically what you are trying to do is reduce into finding x and y

what you do is you want to find a number to multiply one of the equations in order to get the same x or y value does not matter which

so,...

we can do

either 20x or 15y

we will go with the smallest 15y

so for both equations multiply the whole thing by 5 for the first equation and by 3 for the second

5 x 5x+3y=3 --> 1

3 x 4x+5y=18 --> 2

we then get

25x+15y = 15 -->1

12x + 15y = 54 -->2

then now that you have the same Y values you can subtract ! which cancels out both the 15y

25x+15y = 15 -->1

- 12x + 15y = 54 -->2

13x =-39

so now x=-3 and all you have to do with x = -3 is sub this into either one of the equations that you started with  !

x = -3

5(-3) +3y =3

-15 + 3y = 3

3y = 3+15

3y=18

y = 6!

You might be interested in
Josh has been saving $24 every 3 weeks. If he continues to save at this rate, how much money will he have in 12 weeks?
LUCKY_DIMON [66]

Answer:

96

Step-by-step explanation:

12 ÷ 3 = 4 (therefore he is saving $24 four times in 12 weeks)

24 × 4 = 96

6 0
2 years ago
What is the product of the two binomials below (3A+4B)(3A-4B)
Mariulka [41]

Answer:

9A^2 - 16B^2.

Step-by-step explanation:

(3A+4B)(3A-4B) = 9A^2 + 12AB - 12AB - 16B^2 = 9A^2 - 16B^2.

Hope this helps!

5 0
3 years ago
A 5-gallon bucket is full of pure water. Suppose we begin dumping salt into the bucket at a rate of 1/4 pounds per minute. Also,
Tatiana [17]

Answer and explanation:

1. In one minute, there would be zero pounds of salt in the bucket because there's 0.25 pounds of salt in one minute and 0.5 gallons of water leaves the bucket in same minute, eliminating the 0.25 pounds of salt.

2. In ten minutes there would be zero pounds of salt because theres 0.25×10= 2.5 pounds of salt and 0.5×10=5 gallons of water would leave the bucket, eliminating the salt.

3. In 60 minutes there would still be zero salt because water leaves the bucket more than salt enters

4. Zero salt too after bucket leaks

5. Zero salt

4 0
3 years ago
3102 base 4 to base 2 *show work please*
Shalnov [3]
3102 base4 = 3x4^3+ 1x4^2 + 2x1 = 3x64 + 1x16 + 2 = 210 base10
The powers of 2 are 2, 4, 8, 16, 32, 64, 128, 256
210 = 128 + 64 + 16 + 2 = 2^7 + 2^6 + 2^4 + 2^1 = 11010010 base2

A faster method is to each digit in base 4 to two digits in base 2
3 base4 = 11 base2
1 base4 = 01 base2
0 base4 = 00 base2
2 base4 = 10 base2
So 3102 base4 = 11010010 base2

If you wanted to convert base 4 to (say) base 5 you would need the first method and convert to base 10 first
5 0
3 years ago
Help me!!!!!pleaseeeee
Sedaia [141]
M + 7 = m + 7
0 = 0
Infinite many solutions
5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for m -mk-90>85
    10·1 answer
  • Someone help me and remember to show your work so I know how to do it!
    13·1 answer
  • What is 15,245 divided by 9​
    12·2 answers
  • What is the answer to t^2-8t+12=0
    6·1 answer
  • X 9 = 14 <br> Solve for x.
    5·1 answer
  • Plz help me I will be giving a brainliest to the first person to answer please help me​
    7·2 answers
  • A square matrix A is said to be idempotent iff A2 = A. (i) Show that if A is idempotent, then so is I − A. (ii) Show that if A i
    7·1 answer
  • Evaluate 1 + |32 - x| + 3 if x = 9
    10·1 answer
  • Find the area of the circle/please anyone :)
    5·2 answers
  • 4 1/3 divided by 4/7
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!