Solve the system of equations by substitution. y = 2x y = x +1​

Answers

Answer 1

Step-by-step explanation:

y = 2x

y = x + 1

y-1 = x

y = 2x

y = 2 (y - 1)

y = 2y - 1

y = -1


Related Questions

fully simplify the answer and plz explain

Answers

Hi there!

[tex]\large\boxed{x = \frac{24z}{(18 + yz)} }[/tex]

We can begin solving by creating a common denominator:

x · 3 · z = 3xz. This is the denominator that all of the numerators must have in order to work with the fractions.

Multiply each numerator by the missing parts of the common denominator:

[tex]\frac{8 * 3 * z}{3xz} - \frac{y * x * z}{3xz} = \frac{6 * 3 * x}{3xz}[/tex]

Simplify:

[tex]\frac{24z}{3xz} - \frac{yxz}{3xz} = \frac{18x}{3xz}[/tex]

Move all the fractions involving x in the numerator to the right-hand side of the equation:

[tex]\frac{24z}{3xz} = \frac{18x}{3xz} + \frac{yxz}{3xz}[/tex]

Combine fractions:

[tex]\frac{24z}{3xz} = \frac{18x + yxz}{3xz}[/tex]

Multiply both sides by 3xz:

[tex]24z = 18x + yxz[/tex]

Factor out "x" from the terms on the right-hand side:

[tex]24z = x(18 + yz)[/tex]

Divide both sides by (18 + yz)

[tex]\frac{24z}{(18 + yz)} = x[/tex]

Investors buy a studio apartment for $140,000. Of this​ amount, they have a down payment of $21,000. Their down payment is what percent of the purchase​ price? What percent of the purchase price would a ​$7,000 down payment​ be?

Answers

Answer:

a. Down payment of $21,000

= 21,000 / 140,000

= 0.15

= 15%

b. Down payment of $7,000

= 7,000/ 140,000

= 0.05

= 5%

Two sides of a triangle have lengths 7 and 13.

The third side has a length that is

Answers

Answer:

19?

Step-by-step explanation:

19. (3,5), (2,-2)
write an equation in slope-intercept form for the line that passes through each pair of points

Answers

Answer:

y=7x−16       the answer ;)

What is the equation that represents the sentence, "Twenty-four is the sum of a number and six." Use x for the
variable.
O 24+6 = x
24 = x+6
O 24+ x = 6
OX-6+ 24

Answers

Answer:

B. 24 = x+6

Step-by-step explanation:

It is the only one that has a 24 with an equal sign next to it

Answer:

B

Step-by-step explanation:

Dont give me credit give the guy above all the credit

please help!!! ASAP

Answers

Answer:D

Step-by-step explanation:

It's on a computer

Answer:

simulation

Step-by-step explanation:

im in 8th grade

Solve for x: 7(9 + x) = 84
x= 3
x= 21
x=16
x=64

PLEASE HURRY WILL GIVE BRAINLIEST!!!

Answers

Answer:

my answer is 2 . 3 I think

Which line is parallel to the line given y=- 4/3x+1

Answers

Answer:

Any other line with this slope (-4/3)

Step-by-step explanation:

A quick look at y= (-4/3)x + 1 tells us immediately the slope of the given line is (-4/3).  Any other line with this slope (-4/3) is parallel to y= (-4/3)x + 1.  Next time, please share the answer choices.  Thank you.

fill in the table using this function rule. y= -6x + 3
x y
-1 ?
0 ?
1 ?
5 ?

Answers

just add 3 to the y value

Help please!

Bart had an income of $38,250 last year. If the inflation rate is 4.5%, what is his purchasing power?

A. $33,614.85
B. $34,543.75
C. $34,998.15
D. $36,528.75

Answers

Answer:  D) $36,528.75

=======================================================

Explanation:

Positive inflation eats away at the purchasing power of money.

If inflation is 4.5%, then the purchasing power goes down by 4.5% meaning his purchasing power is 100% - 4.5% = 95.5% of what it used to be.

95.5% of $38,250 = 0.955*38250 = 36,528.75

So his purchasing power is $36,528.75

The purchasing power of Bart by the income of last year is option D. $36,528.75.

What is Inflation?

Inflation can simply be defined as the increase in the rate of the prices over a period of time. In other words, inflation describes how much more expensive has a commodity or service becomes in a period of time.

It is clear that, inflation decreases the purchasing power of money.

Given that, the inflation rate is 4.5%.

Also, Bart had an income of $38,250 last year.

Purchasing power will get decreased by 4.5%.

Purchasing power = $38,250 - ($38,250 × 4.5%)

                              = $38,250 - (1721.25)

                              = $36,528.75

Hence the purchasing power of Bart is $36,528.75.

To learn more about Inflation, click on the link given below :

https://brainly.com/question/1869740

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Treys grandmother stores her picture frames in a box. Each side of the box is 20 inches long. Trey wants to know the volume of the box

Answers

Answer:8000

Step-by-step explanation:

The Volume of the box will be 8000 in.³

What is volume ?

Volume is a three dimensional space occupy by the body of particular shape such as here :

It should be noted that a box has six sides that are equal. In this case, we've been given the side of one of the lengths to be 20 inches.

The volume of a cube is :

V = a³

Therefore, the Volume of the box will be :

V = 20³

V = 8000 in.³

Therefore, the Volume of the box will be 8000 in.³

Read related link on:

brainly.com/question/18190217

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$12,000 at 2.2% for 5 years.
what’s the interest?

Answers

Answer:

264.

Step-by-step explanation:

12,000X2.2%=264.

HELP ME PLEASEEEE ITS FOR geometry ITS WORTH 51 POINTS

Answers

Answer:

answer is b

Step-by-step explanation:

The answer is A. 80 degrees

Find the area of the isosceles triangle. please help thanks

Answers

Answer:

1080 m^2 Don't submit m^2 in your answer.

Step-by-step explanation:

Givens

The catch is to find h

To do that, use a^2 + b^2 = c^2

a b and c are in the same 1/2 triangle.

a = 48/2 = 24 m

b = h = ?

c = 51 meters

Solution

a^2 + b^2 = 51^2                      Substitute for b^2 = h^2

24^2 + h^2 = 51^2                   Expand 24^2 and 51^2

576 + h^2 = 2601                    Subtract 576 from both sides

h^2 = 2601 - 576

h^2 = 2025                              Take the square root of both sides

h = 45

Area

Area = 1/2 b * h

Area = 1/2 48 * 45

Area = 1080

Remark

Notice that to find h you only use 1/2 of 48 because that is the base of the right triangle.

To find the area, you need to use all of 48 because 48 is the full length of the base.

I'm stpid pls help. ​

Answers

Answer: the answer is n and o

Step-by-step explanation:

BC is the same as N and O

Enter an inequality that represents the description, and then solve.
Dave has $11 to spend on an $8 book and two birthday cards (c) for his friends. How much can he spend
on each card if he buys the same card for each friend?

Answers

Answer:

$6

Step-by-step explanation:

Consider each equation and solution. Which solution is not correct?

A. W/2 - 13 = -5;w = 16
B. -2x/5 = 4; x = -10
C. 12 - 2y = 8; y = -2
D. 30 = 5z + 10; z = 4

Answers

C is not correct bcoz;
12-2y = 8
12-12-2y = 8-12
-2y = -4 (Divide by -2)
y = 2
Not -2

Given that f(x) = x2 - 2x - 15,
a. Find the coordinates of the y-intercept

b. Find the coordinates of the x-intercepts

c. Find the coordinates of the vertex

d. Use the above information to sketch a graph of f(x)

Answers

a) (0; -15)

you just let x be equal to 0.

b) ( -5; 0) and (3;0)

you just let y/ f(x) equal to 0.

c)

Find the slope of the line going through the points (0, -7) and (8, 1).

Answers

Answer:

8,1

Step-by-step explanation:

maybe i think this will help you

Identify an equation in point-slope form for the line parallel to y =-2/3x+8 that
passes through (4,-5).

Answers

first find the slope (which is -2/3)

then plug into point-slope formula using the coordinates. if you dont remember point-slope is “y-y1 = m (x-x1) where y1 being the y of the coordinate while x1 being the x of the coordinate and m being the slope.

plug it in to get “y+5 = -2/3 (x-4)

that’s the point-slope form

A truck is 180 inches long. A car is 30% shorter than the truck. How long is the car?

Answers

the car is 54 inches long.

A student wants to glue a piece of string from the center of a round table to the edge. If the circumference of the table is 24 inches, approximately how many inches of string will the student need?

Answers

Answer:

3.8 inches

Step-by-step explanation:

Divide 24 by 3.14 (Pi) then divide that number by 2

The number of inches of string that the student needs will be 3.82 inches,

What is the circumference of a circle?

It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.

Let r be the radius of the circle. Then the circumference of the circle will be

C = 2πr units

A student wants to glue a piece of string from the center of a round table to the edge. If the circumference of the table is 24 inches. Then the radius of the circle is given as,

24 = 2πr

r = 24 / 2π

r = 3.82 inches

The number of inches of string that the student needs will be 3.82 inches,

More about the circumference of a circle link is given below.

https://brainly.com/question/27177006

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Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!

Answers

Answer:

80 degrees. add the known angles, then subtract it from 180.

it is a prodigy question please help

Answers

Answer:

428

Step-by-step explanation:

Answer:

428

Step-by-step explanation:

A survey of 100 randomly selected dentists in the state of Ohio results in 78% who would recommend the use of a certain toothpaste. The population proportion is known to be p=0.72. For samples of size 100, which of the following best interprets the mean of the sampling distribution of sample proportion of dentists in the state of Ohio who would recommend the use of a certain toothpaste?

Answers

Answer:

I think its A

Step-by-step explanation:

Answer:

The mean of all sample proportions from all random samples of 100 dentists in the state of Ohio is equal to 0.72.

Step-by-step explanation:

What is the distance between the points (-2, 4) and (7, -5)?

Answers

i believe it would be (-9,9) but i’m not sure. i got this answer because
-2-7 = -9
4(-5) = 9
hope this helps! feel free to mark brainliest:)

x – 7y = –11
5x + 2y = -18

Answers

Answer:

hope this help you

Step-by-step explanation:

Simplifying

X + -7y = -11

Solving

X + -7y = -11  

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '7y' to each side of the equation.

X + -7y + 7y = -11 + 7y

Combine like terms: -7y + 7y = 0

X = -11 + 7y

Simplifying

X = -11 + 7y

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

Solving

5x + 2y = -18

Solving for variable 'x'.

Add '-2y' to each side of the equation.

5x + 2y + -2y = -18 + -2y

Combine like terms: 2y + -2y = 0

5x = -18 + -2y

Divide each side by '5'.

x = -3.6 + -0.4y

Simplifying

x = -3.6 + -0.4y

Katy bought a $76 dress at 33% off and a $52 pair of shoes at 15% off. If
sales tax is 6.75% how much did she pay in total?

Answers

Answer:

101.54

Step-by-step explanation:

Answer:

$103.21

Step-by-step explanation:

33% of 76=$25.08 then 76-25.08=$50.92

12% of 52=$6.24 then 52-6.24=$45.76

50.92+45.76=$96.68

6.75% of 96.68=$6.525-->$6.53

96.68+6.53=($103.21)

When Ellen’s family had completed 70% of a trip, they had traveled 35 miles. How far is the trip overall? (I need a number sentence/A complete sentence)

Answers

Answer:

If Ellen traveled 35 miles and this was 70% of her trip, then 100% of her trip would be 50 miles.

Step-by-step explanation:

You can solve this by setting up a proportion. 35/70 = ?/100. To solve this, cross-multiply 35 and 100 to get 3,500. Divide this by 70 and get 50. This means that 35/70 = 50/100.

Neptune is approximately 2.795 x 109 miles from the sun. Jupiter is 4.838 x 108 miles from the sun. Approximately how many times farther is Neptune from the sun than Jupiter? A 0.173 B. 1.73 x 1017 C. 5.78 D. 5.78 x 1016​

Answers

Answer:

d is answer

Step-by-step explanation:

ok this is real answer

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