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
podryga [215]
2 years ago
5

Solve the simultaneous equations 2x+3y=13 4x-y=-2

Mathematics
1 answer:
kherson [118]2 years ago
4 0
From eq1 ,
2x = 13-3y
x = 6.5-1.5y (eq 3)
sub eq 3 into eq2,
4(6.5-1.5y)-y=-2
26-6y-y=-2
-6y-y=-2-26
-7y=-28
7y=28
y=4 ( eq 4 )
sub eq4 into eq3 ,
x=6.5-1.5(4)
x=6.5-6
x=0.5


You might be interested in
Square root of 129 is greater than, less than or equal to 95/8?​
Tanzania [10]

√129 is less than \frac{95}{8}.

\large\mathfrak{{\pmb{\underline{\purple{Step-by-step\:explanation}}{\purple{:}}}}}

Let us first solve for √129.

➝\:\sqrt{129}

➝\:11.3578

Now,

➝\: \frac{95}{8}

➝\:11.875

Clearly,

➵\:11.3578 < 11.875

➵\: \sqrt{129}  <  \frac{95}{8}

Hence, √129 is less than \frac{95}{8}.

\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35☂}}}}}

5 0
3 years ago
The thickness of glass sheets produced by a certain process are normally distributed with a mean of μ = 3.50 millimeters and a s
Lina20 [59]

Answer:

ok dhufybggoe7sggeu8r7e

Step-by-step explanation: omg fydvrhuguysegegg7e8se is actdgyhuy ting syfdpuo cjzivs8r8hhy9ahesyehu8y7es8eseyhues

6 0
3 years ago
Simplity.<br> 2+{8-2 [32+5(1+2)]}<br> Enter your answer in the box.
V125BC [204]

Answer:

284

Step-by-step explanation:

You have to start out multiplying the (parentheses), then the [brackets], then the {curly brackets}. After you're done with those you would add 2.

5 0
3 years ago
Find the value of C that completes the square for x^2-2x + C
solniwko [45]

Answer:

C = 1.

Step-by-step explanation:

x^2 - 2x = (x - 1)^2 - 1   so:

x^2 - 2x + C = (x - 1)^2 - 1 + C

So to get a perfect square  C must be 1 ( as -1 + 1 = 0):-

(x - 1)^2 - 1 + 1 = (x - 1)^2

Checking  this:

x^2 - 2x + 1

= (x - 1)(x - 1) which is a perfect square./

3 0
3 years ago
The area of the U.S. is about 3.931 million square miles. Approximately 570000 square miles are worked for food production. What
PSYCHO15rus [73]

Answer:

Step-by-step explanation:

Just estimating, about 15%

% = Land used for food production/ Total Area  * 100

% = (570000 / 3.931 * 10^6) * 100%

% = 14.5%

3 0
3 years ago
Other questions:
  • The flower color of bigleaf hydrangeas is determined by the soil's pH. A gardener growing blue hydrangeas believes that lime may
    6·1 answer
  • What is the mean of your data 341, 237, 143,185,248,403,374,451,84,267,178,258,284,465,224
    7·1 answer
  • Juan’s classroom is shaped like a rectangle.the room is 40 feet long and 25 feet’s wide which rectangle could be scale drawing o
    10·1 answer
  • What is the answer to this question. Please help!
    6·1 answer
  • Lanie reads 25 pages in 30 minutes. If Paine reads 200 pages at the same rate how long will it take her?
    11·2 answers
  • Two hot air balloons are flying above a park. One balloon started at a height of 3,000 feet above the ground and is decreasing i
    12·2 answers
  • Which soap deal has the lowest price per ounce?
    5·1 answer
  • Which is the net for this rectangular prism?
    13·1 answer
  • Which ordered pair is a solution to - 8x + 6y &lt;3x - 30?
    11·2 answers
  • PLEASE HELP IM STUCK PLS
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!