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
zimovet [89]
3 years ago
13

Solve for substitution 8x+2y=13 and 4x+y=11

Mathematics
1 answer:
damaskus [11]3 years ago
7 0
Solving for X:
1) y=-8x+6.5   y=-4x+11
2) -8x+6.5=-4x+11
3) -8x=-4x+11-6.5        (Subtract 6.5 from both sides)
4) -8x+4x=11-6.5         (Add 4x to both sides)
5)-4x=4.5
5)x=-1.125

Solving for Y:
y=-8(-1.125)+6.5
y=9+6.5
y=15.5

y=-4(-1.125)+11
y=4.5+11
y=15.5

x=-1.125
y=15.5
or
(-1.125,15.5)
You might be interested in
The amount of money on account it makes M for working H hours can be represented by the equation m = 29.4H what is the constant
ELEN [110]
29.4H is the equation
4 0
2 years ago
Factor completely 2x^2+6x-80
Rom4ik [11]

Answer:

x= -8 , x=5

Step-by-step explanation:

2x^2+6x-80=0

x^2+3x-40=0

look for 2 numbers that their:

sum = 3

product = -40

(x+8)(x-5)=0

thus

x= -8 , x=5 (ANS)

7 0
2 years ago
What is 96 divided by 1.5
Mamont248 [21]
64

-------------------------------
3 0
3 years ago
Read 2 more answers
If you reduce the size of a triangle to a height 2 inches. If the original rectangle was 2 feet wide and 12 inches tall. What is
stealth61 [152]
4 inches wide is the answer
4 0
3 years ago
6) Alberto invests $8,534 in a retirement
ludmilkaskok [199]

Answer:

  17 years

Step-by-step explanation:

The compound interest formula is ...

  A = P(1 +r/n)^(nt)

where P is the principal invested at annual rate r, compounded n times per year for t years.

Filling in the numbers and solving for t, we find ...

  16826.03 = 8534(1 +.04/12)^(12t)

  16826.03/8534 = 1.0033333...^(12t)

Taking logs, we have ...

  log(16826.03/8534) = 12t·log(1.0333333...)

Dividing by the coefficient of t gives ...

  log(16826.03/8534)/(12·log(301/300)) = t ≈ 17.000

It will take 17 years for the account balance to reach $16,826.03.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The summer after sophomore year, Haley nannied for a family and earned $2000. She
    14·1 answer
  • The prime factorization of 441 is ?
    10·2 answers
  • Y+3x=8;x=1,0,3 what is answer
    15·1 answer
  • I need help with this question.
    8·2 answers
  • Oscar and Maria each wrote an equation that they felt represented the proportional relationship between distance in kilometers a
    14·1 answer
  • Semester 1 finals are this week for me. Any advice?
    14·2 answers
  • The triangle shown is reflected across the origin. What are the new coordinates of point B?
    8·2 answers
  • NEED HELP NOW
    14·2 answers
  • A line passes through the points (2,-4) and (6,10). What is the equation of the line?
    5·1 answer
  • 30 exceeds three times a number by 89 what is the number
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!