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
Karo-lina-s [1.5K]
3 years ago
12

Solve the system algebraically. 3x - 2y - 1 = 0 y = 5x + 4 What is the solution? {(-9/7,-17/7)} {(9/7,17/7)} {(9/7,-17/7)}

Mathematics
2 answers:
Nesterboy [21]3 years ago
6 0

Answer:

\large\boxed{\left(-\dfrac{9}{7},\ -\dfrac{17}{7}\right)}

Step-by-step explanation:

\left\{\begin{array}{ccc}3x-2y-1=0&\text{add 1 to both sides}\\y=5x+4&\text{subtract}\ 5x\ \text{from both sides}\end{array}\right\\\left\{\begin{array}{ccc}3x-2y=1\\-5x+y=4&\text{multiply both sides by 2}\end{array}\right\\\underline{+\\\left\{\begin{array}{ccc}3x-2y=1\\-10x+2y=8\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-7x=9\qquad\text{divide bpth sides by (-7)}\\.\qquad x=-\dfrac{9}{7}\\\\\text{Put it to the second equation:}\\\\y=5\left(-\dfrac{9}{7}\right)+4\\\\y=-\dfrac{45}{7}+\dfrac{28}{7}\\\\y=-\dfrac{17}{7}

lutik1710 [3]3 years ago
3 0
3x - 2y - 1 = 0
y = 5x + 4

3x - 2(5x + 4) - 1 = 0
3x - 10x - 8 - 1 = 0
-7x - 9 = 0
-7x = 9
x = -9/7

y = 5x + 4
y = 5(-9/7) + 4
y = -45/7 + 4
y = -45/7 + 28/7
y = - 17/7

solution is (-9/7, -17/7)
You might be interested in
Ava has 9 bags. She wan`t to put it in boxes .How many boxes are there.
andreev551 [17]

Answer:

is this posible

Step-by-step explanation:

3 0
3 years ago
$3 for 6 bagels; $9 for 24 bagels.Determine if the rates or ratios are equivalent
Luba_88 [7]
No these are not equivelent.  24 is 4x6 so that would mean that you would have to pay $12 for those bagels and because 9 is not 3x4, 12 is making these two ratios not equivelent.

7 0
3 years ago
Read 2 more answers
Use properties of exponents to rewrite the following expressions as a number or an exponential expression with
Lerok [7]

Answer:

[(2)^√3]^√3 = 8

Step-by-step explanation:

Hi there!

Let´s write the expression:

[(2)^√3]^√3

Now, let´s write the square roots as fractional exponents (√3 = 3^1/2):

[(2)^(3^1/2)]^(3^1/2)

Let´s apply the following exponents property: (xᵃ)ᵇ = xᵃᵇ and multiply the exponents:

(2)^(3^1/2 · 3^1/2)

Apply the following property of exponents: xᵃ · xᵇ = xᵃ⁺ᵇ

(2)^(3^(1/2 + 1/2)) =2^3¹ = 2³ = 8

Then the expression can be written as:

[(2)^√3]^√3 = 8

Have a nice day!

7 0
3 years ago
Find the area of this circle. Use 3 for T.<br> A = ar2<br> 1 ft<br> [?] ft2
malfutka [58]
3 ft^2

A= 3(1)^2
A=3•1
A=3
4 0
3 years ago
Can someone help me?
Citrus2011 [14]
If you look at the model RM is the same length as PM. PM=10 so RM=10.
3 0
3 years ago
Read 2 more answers
Other questions:
  • A VCR is programmed to record a TV show that lasts for half-hour. If the cassette tape accommodate 180 min. what percent of tape
    15·1 answer
  • Please help me with this question
    5·1 answer
  • Which equation solves the real world problem below?
    12·1 answer
  • Find the annual percentage yield (APY) in the following situation,
    9·1 answer
  • If the shirts cost $20 each how much were each of the pants?
    10·1 answer
  • If Tim Cook, CEO of Apple wants to make a list of the employees who are above 40, what process he will use? Option: 1.Data query
    7·1 answer
  • PLEASE HURRY
    14·2 answers
  • Find the sum of 5x + 20 and the opposite of 20. Write an equivalent expression in standard form. Do not include any spaces in yo
    5·1 answer
  • A certain company stock has
    10·1 answer
  • Read the poem excerpt. A backyard reality is rearranged. Hopscotch lines cower and hide, The toys in the yard . . . lost until s
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!