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
Nina [5.8K]
3 years ago
8

Solve the following pair of simultaneous:

20%20%5C%5C%204x%20%2B%203y%20%3D%204" id="TexFormula1" title=" 5x + 2y = - 2 \\ 4x + 3y = 4" alt=" 5x + 2y = - 2 \\ 4x + 3y = 4" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Vladimir [108]3 years ago
8 0

Answer:

x = -2 , y = 4

Step-by-step explanation:

given:

5x + 2y = -2                            <em>*4</em>

4x + 3y = 4                             <em>*5</em>

Solving simultaneously,

    20x + 8y = -8 ....eq 1

(-)  20x +15y = 20  ...eq 2

.............................................

-7y = -28

y = -28 / -7

y = 4

  • if y = 4

using equation 2,

20x +15(4) = 20

20x = -40

x = -2

You might be interested in
When statisticians collect information to find characteristics of a large group of people They survey part of the group. What is
SpyIntel [72]
It is called a sample.

Hope this helps!
8 0
3 years ago
Read 2 more answers
Can Somebody Please Explain How To Do It? THANKS
sergejj [24]

Hello from MrBillDoesMath!

Answer:

9


Discussion:

Solution 1:

Distance between two points (x1, y1), (x2,y2) is given by the formula

sqrt(  (x1-x2)^2 + (y1-y2)^2).  In our case this becomes

sqrt( (0-0)^2 +  (12 -3)^2 ) =

sqrt( 9^2) =

9.


Solution 2:

Note points D and E both have x = 0 so segment DE is a vertical segment. The length is simply the difference of the y coordinates: 12- 3 = 9 as before.


Thank you,

MrB

6 0
3 years ago
You are planning on using circles to compare the populations of California 37,691,000, Texas 25,675,000, and New York 19,465,000
Aneli [31]
The areas of the circle will represent the population, so:
Area = πr²

5² : 19,465,000
C² : 37,691,000

California circle radius = 6.96 cm

For Texas:
5² : 19,465,000
T² : 25,675,000

Texas circle radius = 5.74 cm
8 0
3 years ago
What is the answer???????????
Vesnalui [34]
A. =4^(-11/3)*4^(2/3)
=4^(-9/3)
=4^(-3)
=1/64
3 0
3 years ago
Which of the following is equivalent to x^-1/2<br><br>1) -1/2x <br>2) -√x<br>3) 1/√x<br>4) -1/2x
irina [24]

Answer:

Option (3) is correct.

Step-by-step explanation:

We need to find the expression that is equivalent to x^{-1/2}.

The property is : x^{-a}=\dfrac{1}{x^a}

Here, a = 1/2

So,

x^{-1/2}=\dfrac{1}{x^{1/2}}

We know that, x^{1/2}=\sqrt{x}

\dfrac{1}{x^{1/2}}=\dfrac{1}{\sqrt{x} }

So, x^{-1/2} is equivalent to \dfrac{1}{\sqrt{x} }

Hence, the correct option is (3).

3 0
3 years ago
Other questions:
  • THE ANSWER IS NOT 12 OR 36 SO DO THE RSM ANSWER PLS ASAP PLS OH PLS 0-0 a * b=ba−ba+ab, find (2*3)×(3*2).
    5·1 answer
  • Please some one help me
    11·1 answer
  • PLEASE HURRY my question is in the picture​
    8·2 answers
  • Abdullah earns $10 an hour delivering newspaper on his bicycle. He started with $20 in his banks account.
    15·1 answer
  • Over 25.5 days, a pond's water level changed by an average of −0.32 centimeter each day. What was the total change in the water
    11·2 answers
  • How many times does 9 go into 204​
    5·1 answer
  • What is ittttt someone please help me
    6·1 answer
  • Dan earns £356 over the course of a five-day week. How much is that per day?
    7·2 answers
  • Write the fraction as a product of a whole number 6/10
    13·1 answer
  • . What is the place value of the 3 in the number 2.703? 3 0.03 0.3 0.003 HERRY IM TIMED I WILL GIVE
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!