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
klasskru [66]
3 years ago
6

Solve by elimination 3x+2y=19 -9x+8y=-29

Mathematics
1 answer:
Alja [10]3 years ago
4 0

Step-by-step explanation:

(3x + 2y =19)(3)

-9x + 8y =-29

9x + 6y = 57 <em><u>NOTE</u></em><em><u>:</u></em> we cross here 9x in first

-9x + 8y = -29 we cross here - 9x in second

Since 9x and - 9x are opposite

___________

6y +8y = 57 - 29

14y = 28

Y=28/14

Y=2

Replace y in second equation of this system:

-9x + 8y = - 29

-9x +8(2)= - 29

-9x + 16 = - 29

-9x = -29 - 16

-9x = - 45

X= -45/-9

X=5

Hope this helps..

You might be interested in
For what values of X are the statements below true
Galina-37 [17]

Answer:

See solutions below

Step-by-step explanation:

For what values of X are the statements below true

A. 1x>x+1

x >x+1

x-x>1

0x > 1

x > 1/0

X >∞

B) |1-x|>3

The fucntion can both be positive and negative

For the negative function

-(1-x) > 3

-1+x > 3

x > 3+1

x > 4

For the positive function

1-x > 3

-x > 3 - 1

-x > 2

x < -2

Hence the required solutions are x > 4 and x < -2

c) For the equation

|x-15| < 0

-(x - 15) < 0

-x + 15 < 0

-x < -15

x > 15

Also x-15 < 0

x < 0+15

x < 15

Hence the required solution is x > 15 and x < 15

3 0
3 years ago
An automated assembly line produces 840 units per hour. At the same production rate, how many units could be produced in 45
WARRIOR [948]

Answer:

The 630

Step-by-step explanation:

i took the test on usa test prep

6 0
3 years ago
david, another student in the classdecides to sell hot chocolate for $0.75 per cup. He began to record his earnings below. the t
Fed [463]

Answer: $787

Step-by-step explanation:

4 0
3 years ago
Two numbers add to 436 and the front is 134 bigger than the second. What are the two numbers?
Ugo [173]

Lets say x is the smaller number and y is the bigger number.


x + y = 436

x + 134 = y


We can substitute the second equation into the first (substitute x + 134 in for y)


x + (x+134) = 436


2x + 134 = 436


2x = 302


x = 151


We can now plug this back into either formula (i use the second)


151 + 134 = b


b = 285


The 2 numbers are 151 and 285

4 0
3 years ago
Read 2 more answers
The value of q varies directly withp2,andq=16whenp=2.What is the value of q whenp=12?
lisov135 [29]
\bf \qquad \qquad \textit{direct proportional variation}\\\\&#10;\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby &#10;\begin{array}{llll}&#10;k=constant\ of\\&#10;\qquad  variation&#10;\end{array}\\\\&#10;-------------------------------

\bf \textit{q varies directly with p}^2\qquad q=kp^2&#10;\\\\\\&#10;\textit{we also know that }&#10;\begin{cases}&#10;q=16\\&#10;p=2&#10;\end{cases}\implies 16=k2^2\implies \cfrac{16}{2^2}=k&#10;\\\\\\&#10;4=k\qquad therefore\qquad \boxed{q=4p^2}&#10;\\\\\\&#10;\textit{when p = 12, what is \underline{q}?}\qquad q=4(12^2)
7 0
3 years ago
Other questions:
  • How do I solve this equation for x?
    9·1 answer
  • A cone has a diameter of 18 in. and a height of 14 in.
    14·1 answer
  • Bryce is solving this problem.
    8·1 answer
  • Next number in sequence 3 -6 12 4 20 ?
    10·1 answer
  • Plzzz help need it right nowww.....
    6·1 answer
  • For each of the following hypothetical studies, identify the primary caution each researcher should have when drawing conclusion
    12·1 answer
  • Does anyone one know how to make a factor a decimal on the calculator
    10·2 answers
  • Help ASAP I need to get this question correct
    10·1 answer
  • Similar Triangles
    14·1 answer
  • Solve.<br><br>(Sorry About my handwriting)<br>​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!