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
Luda [366]
3 years ago
5

Which of these strategies would eliminate a variable in the system of equations?

Mathematics
2 answers:
valentinak56 [21]3 years ago
4 0
8x+8y=2
-) 8x+5y=1
——————
3y=1
y=1/3
8x+8(1/3)=2
24x+8=6
24x=-2
x=-1/12
(-1/12,1/3)
MrMuchimi3 years ago
3 0

Answer:

Step-by-step explanation:

8x + 8y = 2 -------(1)

8x + 5y = 1 -------(2)

subtract equation (2) from equation (1)

The 8x will be eliminated, leaving us with;

3y = 1

Divide bothside of the equation by 3

y = 1/3

substituting y = 1/3 in equation (1)

8x + 8y = 2

8x + 8(1/3) = 2

8x + 8/3 = 2

subtract 8/3 from both-side

8x + 8/3 -8/3 = 2 -8/3

8x = 2 - 8/3

8x = 6 - 8 / 3

8x = - 2/3

Divide both-side of the equation by 8

8x / 8 = -2/3 ÷ 8

x = -2/3 × 1/8

x = -1 / 12

You might be interested in
EASY MATH PLEASE HELP!! : )
GenaCL600 [577]

Answer:

Option A

Step-by-step explanation:

The area of the big Square is 216.

the Smaller Square is 9

subtract both of those, you get option A, 207.

have an amazing day!

4 0
2 years ago
Read 2 more answers
Board is 17 ft only need 5/8
lakkis [162]
We have an equation: ?/17= 5/8

Cross multiply:
8*?= 5*17
⇒ ?= 5*17/8= 10 5/8

We only need 10 5/8 ft~
4 0
3 years ago
Apply the distributive property to create an equivalent expression<br> (-7c+ 8d)0.6=
Citrus2011 [14]
The answer is -4.2c+4.8d
3 0
2 years ago
five years ago a man was seven times as old as his son. five years hence the gather would be three times as old as his son. find
babymother [125]
Father = x
son = y
x-5 = 7(y-5)
x +5 = 3(y+5) solve the system

x-5 = 7y-35
x+5 = 3y +15

x-5 = 7y-35
-x-5 = -3y -15
-10 = 4y -50
+50 +50
40 = 4y
10 = y

Solve for X
x+5 = 3(10) + 15
x+5 = 45
x = 40

The father is 40yrs old and the son is 10yrs old.
5 0
3 years ago
The length of the segment from –3 to 0 on a number line is shown.
Serga [27]
I believe it’s A! Hope this helps I’m very sorry if I’m wrong
4 0
2 years ago
Read 2 more answers
Other questions:
  • Pls answer this and hurry
    10·2 answers
  • Calculate the Laplace transforms of the following from the definition. 1. y = t^2. y = t^3
    9·1 answer
  • What is the domain of this function
    14·2 answers
  • I need help plz help
    12·1 answer
  • 2c + 1 = -31.......................................
    15·2 answers
  • What is the x-intercept of y=5x+20?
    10·1 answer
  • Help me with this I need help
    7·1 answer
  • Please answer this question!! whoever answers correctly will get brainiest!!!
    10·2 answers
  • How to find the number of students who like football or volleyball
    14·1 answer
  • Please do the following step by step ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!