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]
2 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]2 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
A truck is carrying cranberry juice, grape juice, and pineapple juice bottles in a ratio of
satela [25.4K]

Answer:

140

Step-by-step explanation:

7- Cranberry

2:Grape = 40 so 40/2 = 1

3:Pineapple

1= 20 juices

7+2+3 is 12

20 x 12 is 140

8 0
3 years ago
Read 2 more answers
Which statement is TRUE about the best measure of center to use when describing the data set?
Rudik [331]
C because median is all about the middle
5 0
3 years ago
Help me for all these
ad-work [718]
1.) 3+2=?  ?=5 brothers             2.) 54+9=?  ?=63 students              3.) 15-9=?  ?=4

4.) 60-20=?  ?=40 children        5.) 50-15=?  ?=35 trees          6.) 14+4=?  ?=18 times


Don't know why you needed help with this but ok.
5 0
3 years ago
Can someone please help me please I will give brainliest and please dont google
lana [24]

Answer:

Step-by-step explanation:

Correlation occurs when we can observe a trend between the response/dependent variable (y) and the explanatory/independent variable (x).  

When comparing two sets of data, we may observe and use correlation to determine whether or not the data presented if significant or not and whether or not it supports our hypothesis. We may want to see if this is just a fluke and whether or not the trend causes causation.

An example of this would be if we thought that the weight of female mice determines how many kids they have in a month.. Let's say that mice that weigh up to one ounce have 6 baby mice per month.

Let's say that the x variable is the weight which is between 0.25 oz and 1.25 oz and the y-variable is the amount of kids between each month. If another laboratory conducts the same study with the same type of mice with the same weights as us, we would need to determine if there is correlation and if there is causation and try to use this information to determine if both sets of data are significant to our hypothesis.

3 0
3 years ago
Read 2 more answers
HALP HALP HALP HALP HALP
MAXImum [283]

I believe it is C but i can’t be sure but I hope u get it right!
8 0
2 years ago
Other questions:
  • What is the y intercept of the line 2x + 5y = -10? a.2 b.-2 c.5 d.-5
    15·2 answers
  • What is 8/9 divising by three
    9·1 answer
  • machine produces 268 bolts in 28 minutes. At the same rate, how many bolts would be produced in 21 minutes?
    9·1 answer
  • Maranda had 4 lbs. 6 oz. of clay she divided it into 10 equal parts how heavy was each part
    10·2 answers
  • Y+3=-3(×+2) <br> Point slope form equation when graphed
    14·1 answer
  • JKLM Is a parallelogram?
    7·2 answers
  • What is the value of m∠3 if m∠5=70° and m∠2=60°?
    8·1 answer
  • A<br> 116°<br> 27°<br> .Y<br> 37°<br> Z<br> A. AZ<br> B. ZY<br> C. AY<br> D. ZW
    7·1 answer
  • Anyone under 14 wanna be friends? :)
    5·2 answers
  • A number consisting of two digit is three times the sum of its digit.if 45 is added to the numbers the digit are interchanged fi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!