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
Llana [10]
3 years ago
5

10. x- 8y= 17 --3x + 24y=-51 Solve by substitution

Mathematics
1 answer:
Crazy boy [7]3 years ago
6 0

Answer:

[1]    x - 8y = 17

  [2]    -3x + 24y = -51

Step-by-step explanation:

// Solve equation [1] for the variable  x  

 

 [1]    x = 8y + 17

// Plug this in for variable  x  in equation [2]

  [2]    -3•(8y+17) + 24y = -51

  [2]    0 = 0 =>  Infinitely many solutions

You might be interested in
Convert this fraction 12/111 into a decimal ?
lesya [120]

Answer:

Simply divide 12 by 111.

12/111 = 0.10810811       (you can round it to 0.11 though)

Hope this helps! :)


5 0
4 years ago
How do you solve a triangle theorem
Artist 52 [7]

Answer:

I don't no how

gave him the quiz and he was a good night

7 0
3 years ago
The area of a photograph is 35 square inches. Its length is two inches longer than its width. Find the length and width of
devlian [24]

Answer:

length is  7 inches and the width is 5 inches

Step-by-step explanation:

Hello, I think I can help you with this

the area of a rectangle is given by:

(equation1)Area=length * width\\

Step 1

According to the question data,the  length is two inches longer than its width.which means that you can take the width and add 2 inches to obtain the length, in mathematical terms

(equation 2)Width + 2 inches = length

Step 2

Now, put equation 2 into equation 1

Area=length * width\\Area=(width + 2 )*width\\Area=width^{2}+2widht\\Let\ width=w

Step 3

replace and solve for w

Let

A=35

A=35\\Area=w^{2} +2w\\35=w^{2} +2w\\w^{2} +2w-35=0\\use\ quadratic\ formula\ to\ solve\\if\\ax^{2} +bx+c=0\\x=\frac{-b +- \sqrt[2]{b^{2}4ac } }{2a}\\ +- means\ there\ are\ 2\ solutions, we\ will\ take\ the\ positive\ one, because\ it\ is\ a\ distance.\\Now, replacing\\a=1,b=2,c=35\\\\w=\frac{-2 + \sqrt[2]{2^{2}-4*1*-35 }  }{2*1}\\w=\frac{-2 + \sqrt[2]{4+140}  }{2}\\w=\frac{-2+\sqrt{144} }{2} \\w=\frac{-2+12}{2}\\w=\frac{10}{2}\\w=5

so, the width is 5 inches,

replacing this value in equation 2

Width + 2 inches = length

5 in +2 in =length

7 in = length

so , the length is 7 inches

Have a good day.

4 0
3 years ago
Quick its timeddddd: What is the length of the third side of the window frame below? (5 points)
Lena [83]

Answer:

42 inches

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
(x – 10) + (3x – 6) =<br> please someone help?
lyudmila [28]

Answer:

4x-4

Step-by-step explanation:

x-10+3x+6=4x-4

Hope helps :3

7 0
3 years ago
Read 2 more answers
Other questions:
  • What 2 consecutive numbers add to 257
    7·1 answer
  • Jamie places fifteen 1 inch cubes in the bottom of a box. She adds 4 more layers of the same number of cubes to completely fill
    6·1 answer
  • Solve the following equation for y<br> 6y=x
    10·1 answer
  • A gold mine has two​ elevators, one for equipment and another for the miners. The equipment elevator descends 77 feet per second
    6·1 answer
  • What is 1 4/5 + 1 1/5??
    11·1 answer
  • Concrete workers are busy preparing to pour a rectangular patio on the rear of Miguel's new house. The workers have laid out, us
    14·1 answer
  • Consider the following problem: a box with an open top is to be constructed from a square piece of cardboard, 3 feet wide, by cu
    13·1 answer
  • Multiply<br><br> 71.8 X 0.32
    14·2 answers
  • Jimmy earned $8 for every pizza he delivers.
    9·1 answer
  • Drop down answers are
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!