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
amm1812
3 years ago
7

X+y=40 0.08x+0.03y=1.7

Mathematics
1 answer:
Roman55 [17]3 years ago
7 0
SOLVING:

\begin{cases}&x+y=40\quad\Longrightarrow\ Equation\ 1\\&0.08x+0.03y=1.7\quad\Longrightarrow\ Equation\ 2\end{cases}\\ \\ \\y=40-x\\ \\\textbf{Replace\ "y"\ in\ equation\ 2:}\\ \\0.08x+0.03(40-x)=1.7\\ \\0.08x+1.2-0.03x=1.7\\ \\0.05x+1.2=1.7\\ \\0.05x=1.7-1.2\\ \\0.05x=0.5\\ \\x= \dfrac{0.5}{0.05}\\ \\x=10\quad\to\boxed{\boxed{\spadesuit\ First\ answer.\ \spadesuit}}\\ \\ \\y=40-10\\ \\y=30\quad\to\boxed{\boxed{\spadesuit\ Second\ answer.\ \spadesuit}}


\textbf{Testing\ in\ first\ equation:}\\10+30=40\\40=40\ \checkmark\\ \\\textbf{Testing\ in\ second\ equation:}\\0.08(10)+0.03(30)=1.7\\0.8+0.9=1.7\\1.7=1.7\ \checkmark\\ \\\textbf{HOPE\ THIS\ HELPS...!!}
You might be interested in
What is the equation of the line that passes through the point (-6,7) and has a slope of -5? Write the equation in slope interce
Vedmedyk [2.9K]

Answer:

y = -5x - 23

Step-by-step explanation:

Point-slope form:

y - 7 = -5(x + 6)

rearrange:

y - 7 = -5x - 30

y = -5x - 23

4 0
3 years ago
I need help on this and the first person who answer correctly gets a BRANLIST​
Alborosie

Answer:

It would be D

Step-by-step explanation:

All the coordinates are divided by half.

6 0
3 years ago
What is the prime factorization of 28? Please Help! This is due tomorrow! I really want to get an A! Help, please!!!!!!!!!!!!
vovangra [49]
The answer is 2•2•7
Hope this helps
4 0
3 years ago
Which graph represents the solution to the system of equations below?
blsea [12.9K]
C. -4,-5 hope this helps :)
4 0
3 years ago
Read 2 more answers
Apply the distributive property to create an equivalent expression. 6(3c-5d+6)=
Illusion [34]

Answer:

18c - 30d + 36

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Solve 6b<24 or 4b+12>4
    11·1 answer
  • In a circle with an 8-inch radius, a central angle has a measure of 60°. How long is the segment joining the endpoints of the ar
    8·2 answers
  • Need help with this math problem
    10·1 answer
  • Suppose a casino invents a new game that you must pay $250 to play. The game works like this: The casino draws random numbers be
    15·1 answer
  • 2 and 1 fourth divided by 3 and 1 fifth simplified
    5·1 answer
  • What is<br> 4 hr 51 min 19 sec<br> +2 hr 53 min 23 sec
    15·1 answer
  • (-q^2 + 3q + 4) - (7q^2 + 7q)
    14·1 answer
  • You plant a garden in the shape of a triangle as shown in the figure. What is the perimeter of the garden? Find the values of x
    12·1 answer
  • Please help with question ​
    5·2 answers
  • 8x -6=18 what does x equal
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!