Solve using substitution
y = 4x + 11
2x – 5y = -1

Answers

Answer 1

Answer:

x=−3 and y=−1

Step-by-step explanation:

Substitute y=4x+11y=4x+11 into 2x-5y=-12x−5y=−1

-18x-55=-1−18x−55=−1

Solve for x in -18x-55=-1−18x−55=−1.

x=-3

Substitute x=-3x=−3 into y=4x+11y=4x+11.

y=-1

Answer 2

Answer:

28

Step-by-step explanation:

2x-5(4x+11)=-1

2x-20x+55=-1

-22x+55=-1

-22x+55-55=-1-55

-22x/-22=-56/-22

x=28


Related Questions


Which of the following relations is a function?
• {(1.-6). (3. - 5), (1,0)
O None of the other answers are correct
Of(0,5), (5, -1). (5,9)
o {(6,1), (6,2), (6,3)}
o {(0,8), (1,7) (2,6)}

Answers

Answer:

I am awesome at these!!

Step-by-step explanation:

Only the last one is a function. This is because there are no repeating x values, which are the first numbers. It is okay for there to be repeating y values, but not x.

what is f(x) = -2?

a. 3
b.8
c.4
d.0

Answers

Answer:

the answer is a.3!

Step-by-step explanation:

You can find this by finding the value -2 on the graph (x axis) and find what the corresponding y value is! in this case, it is 3.

I hope this helps let me know if you have any questions!

mp + 3); use m = 3, and p = 5

Answers

Answer:

15+3=18

Step-by-step explanation:

mp=3x5=15 + 3 it is 18 the answer

What is the slope in the line shown below.

Answers

Answer:

C

Step-by-step explanation:

M=y2-y1/x2-x1

1-3=(-2)

3-(-4)-7

M=(-2)/7

Hope this helps =3

True or False?

-6 is a solution for -4x > 16

Answers

Answer:

True

Step-by-step explanation:

-4x > 16

Divide each side by -4, remembering to flip the inequality since we are dividing by a negative

-4x/-4 < 16/-4

x < -4

-6 is less than -4 so -6 is a solution to the inequality

Answer: True

Step-by-step explanation:

It equals 24>16

Solve the equation and enter the value of x below.
X-(-5) = -23
x=

Answers

Answer:

x = -28

Step-by-step explanation:

x-(-5) = x + 5

x + 5 = -23

-23 - 5 = -28

x = -28

The answer is
x-(-5)-23
X+5=-23
X=-23-5
X=-28

Solve the equation, justify
each step with an algebraic
property.
7 = 16 + 3x

Answers

7= 16 + 3x
7-16 = 3x
-9 = 3x
x = (-9)/(3)
x = -3

Help me solve this problem

Answers

Answer:

C. Associative Property

Step-by-step explanation:

The associative property of addition states that changing the grouping of the addends does not change the sum.

(-7+3)= -4

-4+9= 5

(3+9)= 12

-7+12=5

7/8 divided by 3/4.

Answers

1.16 but I think you would have to put 1.20 I am not sure, but hoped this sorta kinda helped.
The answer to the question is 1.16666666667
Hope this helped

How would you write the phrase ( 10 more than a number)?

Answers

Answer: x + 10

Step-by-step explanation: 10 more than a number x.

10 more than a number = n + 10.

A car show is making a model of 1980 Ford truck. The model is 10 inches long. If the model truck has a scale of 3 in: 2ft, how tall is the actual truck?

Answers

Answer:

Step-by-step explanation:

3 inches is 2 feet

10 inches is 6.66 feet (no this isn't a joke)

A walli can be built by 6 men working for 8 hours per day in 5 days. How many days will it take 4 men to build if they work only 5 hours per day.
(show your working)

Answers

Answer:

A wall can be built by 6 men working 8*5*6=240 hours.

If 4 men works 5 hours a day, they work 20 hours/day.

It will take them 240 hours /20 hours = 12 days

According to cell theory, all cells come from:

A.
water.
B.
soil.
C.
chemical reactions.
D.
pre-existing cells.

Answers

Answer:

pre-existing cells

Step-by-step explanation:

Answer:

D. pre-existing cells

Step-by-step explanation:

According to the cell theory all living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms. I hope this helps!

Write the number that balances the equation. (14 • 3)8 = 16(7 • __________)

Answers

Answer:

1.5

Step-by-step explanation:

I'm thinking that if the number on the outside of the parentheses is doubled, then everything else on the inside will be halved.

Brayden is making dumplings. If he uses 3 5
a cup of dough for each dumpling, how much dough does Brayden need to make 9 dumplings?

Answers

WELL, considering 3 5 is three fifths, then all you gotta do is multiply 3/5 by 9 to get your answer. Your answer, in decimals, is 5.4!

Hope this helps, if not, comment below please!!!

( ps: if you want me to convert 5.4 to fraction, just let me know! )

Answer:

27/9 or 5 2/9

Step-by-step explanation:

1. If one dumpling is worth 3/5 just multiply the 3 (numerator) by the amount of dumplings Brayden wants to make (9) so you would get the equation 3(9) and the answer is 27.

2. 27 is now the new numerator so put it over 5: 27/5. 27/5 is an improper fraction so the proper way of putting it would be 5&2/9.

3. Brayden needs 27/5 or 5&2/9 cups of dough to make 9 dumplings.

¿Como se llama la figura que esta debajo?

Answers

Donde esta la figura no lo veo

What is (2x - 6)+ 4(x - 3)

Answers

Answer:

6x-18 is the simplest that it can go. brainliest plsss

The answer is 6(x-3)

In the diagram, m_ECA = 120.
m.BCD =

Answers

The measure of angle BCD is 120 degrees.

Which equation below has a POSITIVE SLOPE?
*
O y = -3x + 5
O y = 7 - 2x
O y = 8x + 1

Answers

Y=8x+1

-3x and -3x are both negative slopes

2.) During typhoon ambo PAGASA tracks the amount of the accumulating rain fall. For the first three hour's of typhoon that rain fell at a constant rate of 25 mm per hour. The typhoon slows down for an hour ad started again at a constant rate of 20 mm per hour for the next 2 hour's . Write a piecewise function that models the amount of rain fall as function of time.
(this is for a friend)​

Answers

Answer:

Step-by-step explanation:

Given that :

First 3 hours, rain fell at a constant rate of 25mmper hour

Next one hour, tmrain slowed down

Next 2 hours, rate of 20mm per hour

Piecewise function which models the situation :

________{25t ; t in range {0, 3)

f(x)______{75 ; t in range {3,4}

________{75 + 20(t-4) ; t in range {4,6}

Hence, the function.

What is P in 3 +
p=8




Btw thanks for the help ❤️

Answers

Answer:

5

Step-by-step explanation:

Pls help i will mark brainliest if correct ♡︎シ

Answers

It’s the first one!

2x?=9.6 plz halp the hammer head i will hammer the fence for you

Answers

Answer:

x=4.8 :)

Step-by-step explanation:

9.6/2=4.8

Select the line segment​

Answers

Answer:

It should be A

Step-by-step explanation:

If you need an explanation lmk

Find the midpoint of each line segment.

Answers

Answer:

It would be 7.07 approximately.

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

The right arrow symbol used to show the transition from a point to its image after a transformation is not contained within the Equation Editor. If such a symbol is needed, type "RightArrow." For example: P(0, 0) RightArrow P′(1, 2).

Write a translation rule that maps point
D
(
7
,


3
)
onto point
D
'
(
2
,

5
)
.
please help

Answers

A'(1, -4)

B'(3, 2)

C'(4. -2)

Step-by-step explanation:

Given

Triangle ABC with coordinates

A(1, 4), B(3, -2), C(4, 2)

To find

Coordinates of the image A'B'C' after a reflection over the x-axis

Solution

Rule for reflection over x-axis is

R(x) = (x, y) → (x, -y)

The coordinates will change as follows

A(1, 4) → A'(1, -4)

B(3, -2) → B'(3, 2)

C(4, 2) → C'(4. -2)

Ross says a $154.95 skateboard at 40% off is cheaper than a $250.95 skateboard at 60% off. Is he correct? How much cheaper is the offer?

Answers

Answer:

Yes he is correct  $154.95 skateboard at 40% off is cheaper than a $250.95 with 60% off

Step-by-step explanation:

250.95 with 60% off is 150.57

154.97 with 40% off is 61.99

I'll give brainliest to who can answer this!

Answers

Answer:

The answer is 96 I hope I helped you

Answer:

96

Step-by-step explanation:

12[36/(25-16) +4] =

12[36/9 + 4] =

12[4+4] =

12[8] =

= 96

Pls mark me brainliest:)

What is the slope of a line parallel to the line whose equation is 9x – 3y = 81. Fully
reduce your answer.

Answers

Answer:

Ok so right now that is in standard form (Ax+by=C) and we want to get this into y=mx+b form so that we can easily identify the slope. To do that we need to get y alone by folowing these steps:

9x-3y=81

9x-9x-3y=81-9x (in this step we are just getting rid of the x's from the left side so we can get y alone but since we subtract x from that side we need to subtract the same amount of x's on the other)

-3y=81-9x

-3y/-3=81-9x/-3 (finally to get y alone we need to divide by a -3. This is because any negative number multiplied or divided by another negative will give us a positive. If we divide by 3 then y will be negative which is incorrect. We have to divide by -3 on each side)\

y=81-9x/-3 -----> y=-27+3x ( in this part we have to divide everything on the right side of the equation by -3 as we did on the left side. 81/-3 = -27 and -9x/-3 = +3x.

our new equation is y=-27+3x although the proper form is y=mx+b.

all we need to do now is flip the 3x and -27 for this equation to match y-mx+b form. M in the equation represents the slope of an equation.

y=-27+3x---> y=3x-27

in this equation 3 is m and m represents the slope. For an line to be parralel to one another they must have the same slope. Therefore the slope of a line parallel to that equation is 3.

Step-by-step explanation:

The Slope of a line parallel to the line whose equation is 9x – 3y = 81 is 3.

What is the Slope of a line?

A slope of a line is the change in y coordinate with respect to the change in x coordinate.

Given that the slope of a line parallel to the line whose equation is

9x – 3y = 81

Reducing the Equation in form of y = mx + c, where m is the slope,

9x - 3y = 81

3y = 9x - 81

y = 3x - 27

Since, two line when parallel have equal slope, so the slope of the given line is 3.

Hence, The Slope of a line parallel to the line whose equation is

9x – 3y = 81 is 3.

For more references on The Slope, click;

https://brainly.com/question/3605446

#SPJ2

Order from least to
greatest
2/5
50%
.42 random question

Answers

Answer:

2/5, 0.42, 50%

Step-by-step explanation:

2/5 = 0.4

0.42=0.42

50% = 0.5

Answer:

Step-by-step explanation:

just switch the 50% and ,42

2/5,,42,50% hope this helps

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