Solve -4x+y=-1 and Y=2x-5 using substitution

Answers

Answer 1

Answer:

x= -2, y= -9

Step-by-step explanation:

let -4x+y=-1 be [1]

and y=2x-5 be [2]

Sub [2] into [1]

-4x+(2x-5)=-1

-4x + 2x -5 = -1

-2x -5 = -1

-2x = 4

2x = -4

x = -2

Sub x=-2 into [2]

y=2(-2)-5

y=-4-5

y=-9


Related Questions

-2 - 4x = 14

What is x?​

Answers

Answer:

x= -4

Step-by-step explanation:

-2 - 4x = 14 + 2        -4x=16/-4   =    x = -4

+2                            /-4

Checking answers:

-2 -4(-4) = 14

-2 + 16= 14     so true

Hope this helps :)

Answer:

-4 !

Step-by-step explanation:

it would be negative 4 :)

-2-4x=14

+2 +2

----------------

-4x=16

divide by -4 on each side to isolate "x"

x=-4

In ΔGHI, the measure of ∠I=90°, the measure of ∠G=82°, and GH = 3.4 feet. Find the length of HI to the nearest tenth of a foot.

Answers

Answer:

3.4

Step-by-step explanation:

Answer:

3.4

Step-by-step explanation:

Write an equation that represents the line.
Use exact numbers. Help quick plz

Answers

Answer:

y = 7/5x + 7

Step-by-step explanation:

Answer:

y−4= 7/5(x+2)

Step-by-step explanation:

what number is 6 times as much as 2

Answers

Answer:

12

Step-by-step explanation:

2+2+2+2+2+2=12

6×2=12

)) The perimeter of the surface of a rectangular table is 18 feet. The table is 3 feet wide. How long is it?​

Answers

Answer:

6 feet long

Step-by-step explanation:

Perimeter = (2 * length) + (2 * width)

18 = (2 * length) + (2 * 3)

18 = (2 * length) + 6

2 * length =18 - 6

2 length = 12

length = 12/2

length = 6

Hope this helps!

Pls mark brainliest :)

3. A landscape plan includes a rectangular flower bed that is surrounded the wood planks. In the drawing, the rectangular flower bed is 8 in. by 12 in. The length and width of the actual flower bed will be 26 times larger than the length and width in the drawing.
(a) What is the perimeter of the drawing? Show all calculations that lead to the answer and include units.
(b) What is the perimeter of the actual flower bed? Show all calculations that lead to the answer and include units.
(c) What is the effect on the perimeter of the flower bed with the dimensions are multiplied by 26? Write the final answer in a sentence and show supporting calculations to arrive at the answer.

Answers

Answer:I dont know if this is right but

A: 384 in.

B: 1040 in. = 86 ft

C: because the dimensions are multiplied by 26 inches, the perimeter for the actual flower bed is converted into feet.

Step-by-step explanation:

A: (8*2)+(12*2) = 384 in.

B: ((8*26)*2)+((12*26)*2) = 1040 in. = 86 ft.

Answer:

3. A landscape plan includes a rectangular flower bed that is surrounded the wood planks. In the drawing, the rectangular flower bed is 8 in. by 12 in. The length and width of the actual flower bed will be 26 times larger than the length and width in the drawing.  

(a) What is the perimeter of the drawing? Show all calculations that lead to the answer and include units.

(b) What is the perimeter of the actual flower bed? Show all calculations that lead to the answer and include units.

(c) What is the effect on the perimeter of the flower bed with the dimensions are multiplied by 26? Write the final answer in a sentence and show supporting calculations to arrive at the answer.  

Answer:  

(A) 8+8+12+12=

40in = 3ft 4in

 

(B) 8 x 26= 208

12 x 26= 312

(208 x 2) + (312 x 2) = 1040in = 86ft

Step-by-step explanation:

x² - 2x - 2 x 5 =
Show your work.

Answers

Your answer would be 2(x+1)


There are 4 consecutive even integers that sum to 332. What is the greatest of these
integers

Answers

Answer:

86

Step-by-step explanation:

let the numbers be x,x+2,x+4,x+6

Then x+x+2+x+4+x+6=332

4x=332-12=320

x=320/4=80

so numbers are 80,82,84,86

What is a reasonable metric unit of length for a truck?
A. millimeter
B. centimeter
C. meter
D. kilometer

Answers

Answer:

c meter

Step-by-step explanation:

plz help for brainliest

Answers

Answer:

B. 0.0000000041

Step-by-step explanation:

Answer: The correct answer is 0.000000004109 which would be answer choice D

Step-by-step explanation:

20.34 divided by 18.5

Answers

Answer:

simplified to 1.1

Step-by-step explanation:

1.09945945946

Answer: The Answer is 1.1

Step-by-step explanation:

20.34/18.5= 1.09450459

Simplify to 1.1

Solve for x and y
Pls help it’s timed

Answers

Answer:

Check pdf

Step-by-step explanation:

Thank you have posted next question!

Answers

both 2 and 4 are supplementary
I think 2 and 4 are both supplementary, I’ll explain if u want, have a nice day/night

Read this passage from the U.S. Constitution:
I need help please do

Answers

I believe the answer is D

Answer:

the answer is D i believe

You are saving for a bicycle that cost at least 300.00. Your parents give you 120 dollars torwards the bike. If you make 12 per hour how many hours will you have to work? Write and Solve the inequality

Answers

Answer:

15 hours

Step-by-step explanation:

120 + 12x = 300

subtract 120 from each side

12x = 180

divide by 12

x = 15

Sawyer was last year's PI Day
champion. He is feeling
confident this year with his
chocolate silk ple. One recipe
calls for 16.8 grams of semi
sweet chocolate. Sawyer only
uses premium. Imported Belgian
chocolate, so each gram costs
him $4.72. How much did he pay
for the chocolate? Round to the
nearest hundredth If
necessary

Answers

Answer:

79.3

Step-by-step explanation:

Just multiply 16.8 by 4.72 to get 79.296, which rounds to 79.3

Caleb had a busy summer! He and his family went on a vacation to Mexico for 6 days. Then, Caleb went to summer camp for 42 days. How many times as long as the vacation to Mexico was the summer camp?

Answers

Answer:

7

Step-by-step explanation:

Since he was 6 days in mexico and 42 days in summer camp, we can divide 42 by 6 which would give us 7 so he spent 7 times more days in camp than in mexico

How fast must Larry travel to go 678 mi. in 12 hrs?

Answers

Answer:

8136

Step-by-step explanation:

Answer:

Larry must travel at a speed of 56.5mi / h.

Step-by-step explanation:

If the question is asking us how fast must Larry travel we are asking about his speed. The speed is equal to distance divided by time, therefor Larry must travel with the following speed.

Speed = Distance/ Time

Speed = 678mi / 12hrs

Speed = 56.5mi / h

REALLY NEED HELP
What is the slope of the given line??

Answers

Answer:

3

Step-by-step explanation:

slope is rise over run

6/2 simplifyed is 3/1 or just 3

8 less than a number​

Answers

Answer:

13 is the answer to 8 less than a number

Write - 1.5y = 4.5x - 9 in standard form .​

Answers

The standard from of the equation - 1.5y = 4.5x - 9 is 3x + y = 6.

What is an equation?

A mathematical equation is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given equation is - 1.5y = 4.5x - 9. The standard form of an equation is given as:-

ax + by = c

Reduce the equation -1.5y = 4.5x - 9 in standard form:-

-1.5y = 4.5x - 9

4.5x + 1.5y = 9

3x + y = 6

Therefore, the standard from of the equation - 1.5y = 4.5x - 9 is 3x + y = 6.

To know more about an equation follow

https://brainly.com/question/187506

#SPJ2

Last year, Lukas read 7 more books than Trevor. This year, Lukas read twice as many books as last year. If k represents the number of books Trevor read last year, type an expression to show the number of books Lukas read this year. Enter your answer in the box.

Answers

Answer:

he read 11

Step-by-step explanation:

How far was away from home was Hunter when he started?

Answers

Answer:

i would think about 20 miles away

Step-by-step explanation:

Write an equation in point-slop form of the line that passes through the point (2,-8) and has a slope of 4

Answers

point slope form

y+8=4(x-2)

slope-intercept form

y= 4x-16


H e l p y ’ a l l p l e a s e

Answers

Answer:

im assuming that is a parallelogram and that youre solving for x so

2x - 5 = 17

2x = 22

x = 11

Tell whether each event is impossible, unlikely, as likely as not, likely, or certain. Then tell whether a probability is zero, close to 0, 1/2, close to 1, or 1. 1. You roll a six-sided, and the number is less than 2.

Answers

Answer:

close to 0

Step-by-step explanation:

Our probability P(E) = number of desired outcome/number of possible outcomes.

Since we have a six-sided die, the number of possible outcomes = 6.

Also, since we have a number less than 2, which that number is 1, the number of desired outcomes is 1.

So probability of obtaining a number less x than 2 is the probability of obtaining a 1 = P(1).

So, P(1) = 1/6 = 0.1667

Since P(1) = 0.1667, it is close to 0.

So, the answer is close to 0.

please help!!

Which graph shows the result of dilating this figure by a factor of One-third about the origin?

A) On a coordinate plane, triangle A prime B prime C prime has points (negative 2, 2), (2, 2), (2, negative 2).

B) On a coordinate plane, triangle A prime B prime C prime has points (negative 3, 3), (3, 3), (3, negative 3).

C) On a coordinate plane, triangle A prime B prime C prime has points (Negative 18, 18), (18, 18), (18, negative 18).

D) On a coordinate plane, triangle A prime B prime C prime has points (negative 12, 12), (12, 12), (12, negative 12).

Answers

The answer is c On a coordinate plane triangle A prime B prime C prime has points Negative 18,18

4y-1=11
Pleas help me I have a test tomorrow

Answers

Answer:

y=3

Step-by-step explanation:

4y-1=11

+1      +1

4y=12

/4    /4

y=3

Answer:

3

Step-by-step explanation:

You need to add 1 to both sides.(4y=12)

Then divide 12 by 4 to get the y by itself.

y=3

On a number​ line, suppose point E has a coordinate of 2​, and EG=6. What are the possible coordinates of point​ G?

Answers

G can be on the left or right of E. If it’s on the left it is at point 2-13=-11, and if it’s on the right it is at point 2+13=15. So the two possible positions for G are -11 and 15.

these are for some test i already did please help plz plz plz

Answers

Answer:x=4

Step-by-step explanation:2•4=8+1=9

Answer:

I had this on a worksheet from a year ago

Step-by-step explanation:

1. x=4

2. b=3

3. w+6

4. 208/3

5. t=4

6. k=5

7. x=8

8. x=10

9. a= -36

10.  b=2

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