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
Delvig [45]
2 years ago
15

Solve this its not 48

Mathematics
1 answer:
algol132 years ago
7 0

\begin{cases} 3x+5y=50\\ x+5y=31\\[-0.5em] \hrulefill\\ x+5y=31\\ x = 31-5y \end{cases}\qquad \implies \stackrel{\textit{substituting in the 1st equation}}{3(31-5y)+5y=50} \\\\\\ 93-15y+5y=50\implies 93-10y=50\implies -10y=-43 \\\\\\ y=\cfrac{-43}{10}\implies \boxed{y=\cfrac{43}{10}} \\\\[-0.35em] ~\dotfill\\\\ x = 31-5y\implies x = 31-5\left( \frac{43}{10} \right)\implies x = 31-\cfrac{43}{2}\implies \boxed{x = \cfrac{19}{2}}

\stackrel{~\hfill \textit{\large total for 7x + 5y}}{7\left( \cfrac{19}{2} \right)+5\left( \cfrac{43}{10} \right)\implies \cfrac{133}{2}+\cfrac{43}{2}\implies \cfrac{133+43}{2}\implies \cfrac{176}{2}\implies 88}

You might be interested in
Please help I’m unsure
Delicious77 [7]

Step-by-step explanation:

3 answer.....

......dkdkdk

6 0
2 years ago
Selectie correct answer.
denis-greek [22]

Answer:

OD.0

Step-by-step explanation:

because 2(X+4)-1 = 2x+7

or, 2x+8-1 = 2x+7

or, 2x+7= 2x+7

and it cancels out eachother so it will be 0

4 0
3 years ago
4
Gala2k [10]

Answer:

yhjhgnxfvhjmnfdtjnnbnjyu

4 0
3 years ago
If t >0 and t^2-4=0 What is the value of t?
Maslowich
T=2
t^2=4
4-4=0
is that right?
6 0
3 years ago
Plz Help
soldier1979 [14.2K]

the answer is B)

we can check by multiply them

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the volume of a rectangular prism with a length of 3 ¾ meters, a width of 1 ½ meters, and a height of 2 meters. A. 11.25 cu
    15·1 answer
  • Hi I really need help on this I will give 60 points MAY YOU PLEASE HELP ME!!!
    14·1 answer
  • You pick a card at random.
    6·1 answer
  • What is the height of the trapezoid?
    11·2 answers
  • Kim is reading a book with 380 pages. She read 20 pages each day until she reached Part 2 of the book. Part 2 of the book is 160
    6·2 answers
  • Simplify the expression. (5x2 - x - 7) + (2x2 + 3x + 4)
    9·1 answer
  • Don and Dan went fishing. Don caught 6 times more mass of fish than his brother. Together they caught 4.2 kg of fish. What mass
    7·1 answer
  • 38. Calculate the value of c in the triangle below.
    10·2 answers
  • . -((-55) + 2)<br> How to solve this including step by step
    12·1 answer
  • Assume that all interest is simple interestBerger Car rental borrow $8500 at 4% interest to cover the increase cost of the auto
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!