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
iVinArrow [24]
3 years ago
12

Solve each equation by substituting. y=-3x+5

Mathematics
2 answers:
torisob [31]3 years ago
6 0

Answer:

x = 1 and y = 2

Step-by-step explanation:

y + 3x = 5 -------------> (1)

-4y + 5x = -3 -------------> (2)

(1) * 4

=> 4y + 12x = 20 --------> (3)

(3) + (2)

=> 0y + 17x = 17

=> 17x = 17

by dividing both sides by 17

=> x = 1

by putting x = 1 into (1)

=> y + 3*1 = 5

=> y + 3 = 5

=> y = 5 - 3

=> y = 2

Kobotan [32]3 years ago
4 0

Answer:

(1, 2 )

Step-by-step explanation:

Given the 2 equations

y = - 3x + 5 → (1)

5x - 4y = - 3 → (2)

Substitute y = - 3x + 5 into (2)

5x - 4(- 3x + 5) = - 3 ← distribute and simplify left side

5x + 12x - 20 = - 3

17x - 20 = - 3 ( add 20 to both sides )

17x = 17 ( divide both sides by 17 )

x = 1

Substitute x = 1 into (1) for corresponding value of y

y = - 3(1) + 5 = - 3 + 5 = 2

solution is (1, 2 )

You might be interested in
2 (4 + n) - 5 for n = 0 = ??
andrew-mc [135]

Answer:

3

Step-by-step explanation:

2 (4 + n) - 5

Let n = 0

2(4+0) -5

Parentheses first

2(4)-5

Multiply

8-5

Subtract

3

5 0
3 years ago
Read 2 more answers
A cube with an edge of length s has a volume of 64 units. What is the length of the edge
Basile [38]
S = ∛64
s = 4

The length of the edge is 4 units.
4 0
3 years ago
Read 2 more answers
How is this written in an expanded version?
Yuri [45]

Powers distribute over multiplications:

(ab)^c = a^c\cdot b^c

So, you have

(3k^5)^2 = 3^2 \cdot (k^5)^2

Now, 3^2 is simply 9.

As for (k^5)^2, we have to use the rule

(a^b)^c = a^{bc}

to get

(k^5)^2=k^{5\cdot 2}=k^{10}

So, the final answer is

(3k^5)^2 =9k^{10}

5 0
4 years ago
Read 2 more answers
Work out the cost. 70cm of ribbon at £2.00 per metre.​
Rus_ich [418]
Answer:140
Explanation: multiply 70 times 2.00
3 0
3 years ago
Kelsey wants to split 19.2 feet of ribbon equally
timama [110]

Answer:

The answer is  115.2.

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • If two fair dice are rolled, find the probability of a sum of 6 given that the roll
    7·1 answer
  • MATH HELPERS PLEASE HELP!!!!
    15·1 answer
  • If a system of equations has infinitely many solutions, then what does the graph look like?
    14·1 answer
  • You need to put your reindeer, Lancer. Prancer, Gloopin, and Bloopin, in a single-file line to pull your sleigh.
    6·1 answer
  • What is the distance between these set of points?<br> (-2,-3) and (3,4)
    13·1 answer
  • 3x-2y=17 <br> 2x-2y=10 <br> What’s the answer?
    13·1 answer
  • If f(x) = 2(6), then (-2) = ?​
    7·1 answer
  • Solve the equation plz<br> 8x-2(x+1)=2(3x-1)
    15·1 answer
  • Please Solve ASAP
    10·1 answer
  • Diane got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft stor
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!