Solve the following system of equations by substitution
2x – 3y = -1
y = x - 1

Answers

Answer 1

Answer:

(4, 3)

Step-by-step explanation:

Plug in x - 1 where y is. The equation will turn in 2x - 3(x - 1) = -1. Distribute, and you'll have 2x -3x + 3 = -1. Combine like terms (2x and -3x) and you'll have -x + 3 = -1. Subtract 3 from both sides, and you'll have -x = -4. Divide by -x (or -1) on both sides, and you'll have x = 4. Since y = x - 1, y = 3, since 4 - 1 = 3. Sorry if this sounds repetitive btw. Good luck :D


Related Questions

Help me please!!! I will give Brainly if correct!
If you go 540 miles in 27 hours, how many miles per hour are you traveling?
75 mph
20 mph
35 mph
5 mph

Answers

Answer:

B, 20mph

Step-by-step explanation:

540 miles in 27 hours is 540/27 = 20 miles in 1 hour. This is 20 mph

Answer:

B. 20 mph

Step-by-step explanation:

You're gonna divide the total distance traveled in the time it took to find how much time it took per hour

540/27 = 20

PLEASE HELP
What is the formula to find a square pyramid?

Answers

Answer:A Square Pyramid is a pyramid with a square base. Square Pyramid Formula : Area of Base (A) = s² Surface Area of Pyramid = s² + 2sl = A + 2sl Volume of Pyramid = (1/3)b²h

Step-by-step explanation:

Can someone help me figure out how to do this?

Answers

It’s d I believe I think I’m not so sure tho I’m pretty sure
Yes! It is D sorry I’m late

Pls help ASAP and ill give brainliest

Answers

Answer:

81 lbs of raisins

Step-by-step explanation:

make a ratio

3 x

-- = ---

2 54

solve for x by cross multiplying

162= 2x

x= 81 lbs of raisins

Mike just opened a checking account at the bank. He asked for a debit card Instead an ATM card. What will Mike be able to do with a debit ca
that he could NOT do with an ATM card?
Select the best answer from the choices provided.
Ο Α.
transfer money
OB.
deposit money
C.
withdraw money
OD.
purchase an item

Answers

Answer:

the answer is d

Multiple Choice. Which of the following fractions is equivalent to 6/15
2/7
4/10
1/2
1/4

Answers

Answer:

the answer that is equivalent to 6/15 is 4/10

What is the slope-intercept equation for the line below?

Answers

Answer:

Answer is C

Step-by-step explanation:

Please help me please please ASAP ASAP please ASAP

Answers

Answer:

45

Step-by-step explanation:

Well, it is not 90 degrees, as it is not a right angle.

It cannot be 180 degrees as that would be a straight line and a triangle's whole angle measure is 180 degrees.

It is an acute angle, and appears to be half of 90 degrees, so I would have to say 45 degrees.

Not enough information is false because you can infer that it is 45 degrees by looking at it.

Hope that helps!

The answer is 45 because the person on top put 45

Can someone plz help me with this one problem plz!!!!

Answers

Answer:

x  |  y

3  |  0

4  |  1

5  |  2

6  |  3

Step-by-step explanation:

An equation is shown. 21t = 252

Answers

Answer:

t = 12

Step-by-step explanation:

252 divded by 21 =

[tex]12[/tex]'

Steve invests $1,800 in an account that earns 3.7% annual interest, compounded continuously. What is the value of the account after 10 years? Round your answer to the nearest dollar. A. about $2,466 B. about $2,589 C. about $2,601 D. about $2,606

Answers

Answer:

B. about $2,589

Step-by-step explanation:

Given data

P=$1,800

R= 3.7%

T=10years

The expression for the compound interest is given as

A= P(1+r)^t

substitute

A= 1800(1+0.037)^10

A= 1800(1.037)^10

A=1800*1.43809495884

A=$2588.570

Hence the answer is  B. about $2,589

Some one help me I don’t get this class

Answers

Answer: 12b = 60

Step-by-step explanation: 12oz of dough are used for one batch and the letter b represents the number of batches and the ? = the total amount of dough she has and she states she has 60oz of dough and she will be able to make 5 batches of papadums.

Answer:

12b=60

Step-by-step explanation:

give the man above the crown thing

Find the probability of 3 successes in 7 trials of a binomial experiment in which the probability of success in any one trial is 35%.
Please HELP!!!!!!!!!! ILL GIVE BRAINLIEST!!!! To first to answer.

Answers

Answer:

.268   i rounded

Step-by-step explanation:

There were 425 people at a cinema when the movie started. One hour later, there were 323 people left at the cinema. What was the percentage decrease in the number of people at the cinema

Answers

Answer:

83% Might be wrong

Step-by-step explanation:

Answer:

24% Positive.

x=7

Step-by-step explanation:

karen is building a house in Norfolk, Virginia. She would like a bedroom that is 12 feet in length by 10 feet in width. What is the area of the bedroom?

Answers

Answer:

POINTFARMER.EXE=EZ

Step-by-step explanation:

Answer:

120 feet^2

Step-by-step explanation:

If 5x + 4y= 13 and 4x + 5y = 14, find the value of (x - y).​

Answers

Answer:

x - y = - 1

Step-by-step explanation:

Given the 2 equations

5x + 4y = 13 → (1)

4x + 5y = 14 → (2)

Subtract (2) from (1) term by term , that is

(5x - 4x) + (4y - 5y) = 13 - 14

x - y = - 1

Answer:

x = 1

y = 2

x - y = -1

Step-by-step explanation:

5x + 4y= 13,   then 4y = 13 - 5x, then y = (13 - 5x)/4

4x + 5y = 14

substitute for y:

4x + 5(13 - 5x)/4 = 14

simplifying:

4x + (65 - 25x)/4 = 14

4x + 16.25 -6.25x = 14

-2.25x = -2.25

x = 1

y = (13 - 5)/4 = 2

pls help question is on picture

Answers

Answer:

25 degrees

Step-by-step explanation:

5 * 5  = 25

Can someone please help me on this question ASAP!!!!! ‘What is the gradient of the blue line?’

Answers

Answer:

4

Step-by-step explanation:

change in y/change in x

rise/run

4/1

= 4

Answer:

up 4 right 5 and up 8 right 6

Step-by-step explanation:

Nora has a action figure collection consisting of 180 action figures she keeps on the wall and 220 she keeps in a display case. What percentage of Nora's action figure collection does she keep on her wall?

Answers

Answer:

45%

Step-by-step explanation:

Answer:

hey is nora selling them , pls give her number

Step-by-step explanation:

Tessa grabbed a quick bite to eat during her lunch
break. She purchased an $8.50 sandwich and a
lemonade for $1.99. She tipped the barista 15%
and paid a 6% sales tax. Note: The sales tax and
tip are each based on the cost of the food and
drink, only.

Answers

Answer:

2x power of 3+4x−3

Step-by-step explanation:

what times 3 equals 4?

Answers

Answer:

heres your answer 1.3333

0.
A mountain climber ascends a mountain to its peak. The peak is 14,090 ft above sea level. The climber then descends 490 ft to meet a fellow climber. Find the climber’s elevation above sea level after meeting the other climber.


13,600 ft

14,580 ft

–13,600 ft

9,190 ft

Answers

Answer:

13,600 feet above sea level

Step-by-step explanation:

The climber was at 14,090 feet above sea level, and then they went 490 feet closer to sea level to meet the other climber. Since they’re moving closer to sea level and you want to know how far *above* sea level they are, subtract 490 from 14,090. 14,090-490=13,600 feet above sea level

hi i will mark brainliest if at least 2 are done:)

Answers

Answer:

[tex]3x+18x+5x-2=180\\26x-2=180\\26x=182\\X=7[/tex]

[tex]<D=21\\<E=126\\<F=33\\[/tex]

[tex]16x+13x+16x=180\\45x=180\\X=4\\[/tex]

[tex]<G=64\\<H=64\\<I=52\\[/tex]

[tex]X+8+6x-5+2x-3=180\\9x=180\\X=20\\[/tex]

[tex]<J=28\\<K=115\\<L=37\\[/tex]

Step-by-step explanation:

(Asapppppp!!)
Simplify to create an equivalent expression,
19 - 6(-k - 2)
Choose 1 answer,
A.-6k+31
B.25k+7
C.6k+31
D.25k+32

Answers

Answer:

56/1230

Step-by-step explanation:

Answer:
I’m not sure but I think it is letter C.
Good luck

CAN SOMEONE PLEASE GIVE ME THE ANSWER TO QUESTION 6? PLS ILY

Answers

Answer:

12.5

Step-by-step explanation:

We want to find 1/8 of 100 so we would write it as 100÷8 to get 12.5

Now we know that 12.5 is equivalent to 1/8 but let's double check.

12.5×8 is 100

1/8 ×8 is 8/8

100=8/8

(b) Work out an equation of the straight line that passes through (9, 2) and (3,5)
[3 marks]

Answers

Answer:

I think it's y = -x + 11

Step-by-step explanation:

use the formula y - y1/ y2 - y1 = x - x1/ x2 - x1

The diameter of a circle is 4 units.
What is the radius of the circle?
units

Answers

Answer:

radius = D/2

Step-by-step explanation:

radius= 4unit/2

=2unit

What is 8 x 3? I'm doing an i-ready lesson and I forgot, please help me XD

Answers

Answer: 24

Step-by-step explanation:

Identify four tables that show a proportional relationship. Giving correct answer brain and 5 stars!!!

Answers

Answer:

The correct answer is A

Step-by-step explanation:

Forget about the decimal nd think about quarters 1 quarter is 25 2 is 50 3 is 75 and 4 is 1.00

Answer:

The answer is A if I understand the question correctly.

Step-by-step explanation:

hellooop

what is the y-intercept of the graph shown below?

Answers

Answer:

-7 :) hope this helps

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

To find the y intercept find where the line crosses the the x axis at zero so for this graph it crosses at (0,-6) making the y intercept -6

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