Solve for linear equations by substitution

3x - 2y = 9
y=2x-7

Answers

Answer 1
answer: x=5 , y=3

steps:
3x-2(2x-7)=9
simplify
(-x+14=9)
isolate x for -x+14=9
x=5
y=2(5)-7
y=3

Related Questions

An Internet website had 500 visitors this month. Suppose that the number of visitors
doubles each month. Which equation can be solved to find x, the number of months
it takes to reach 1,000,000 visitors per month?

Answers

Answer:

10.5

Explanation:

500×2, 1000×2 etc

Can someone ls help me with this, the picture is down below!

Answers

Answer:

8 : 5

Step-by-step explanation:

white socks 8

brown socks 5

Answer:

8:5

Step-by-step explanation:

cause

white= 8

brown=5

white:brown

8:5

Evaluate 2x(2) - 3x + 2 for x = -5

Answers

Answer:

Step-by-step explanation:

substitution

2x(2)-3x+2

2(-5)(2)-3(-5)+2

-10(2)+15+2

-20+17

-3

Please tell me the correct answer and I will mark you brainliest

Complete the sentences below about the graphs of y=-2x and y= x

Answers

all of the answers you put are correct. good job!

3.5b + 4.5 + 0.5b -0.5 - 1.5b

Like terms simplify please

Answers

Your answer is 2.5b +4

Answer:

b=-1.6

Step-by-step explanation:

"Three less than an unknown number.

Answers

Answer:

x - 3

Step-by-step explanation:

Unknown number = x

X - 3 because X is unknown and you need to subtract if three

An equilateral triangle is inscribed in a circle. An apothem is shown. Lines are drawn from each point to the center point to form radii. The angles between the radii are 120 degrees. The angles between the radii and the sides of the triangle are 30 degrees.
An equilateral triangle with side lengths equal to 12 StartRoot 3 EndRoot units is inscribed in a circle.

Half a side length of the equilateral triangle is 6 StartRoot 3 EndRoot units, so the apothem is
units long and the radius of the circle is
units long.

Each segment of the circle has an area equal to the difference between the areas of the sector and triangle, or (
π −
StartRoot 3 EndRoot) units2.

Answers

Answer:

6

12

48

36

Step-by-step explanation:

Hope This Helps! :)

Answer: 6, 12, 48, 36

Step-by-step explanation:

An equilateral triangle with side lengths equal to 12 StartRoot 3 EndRoot units is inscribed in a circle.

Half a side length of the equilateral triangle is 6 StartRoot 3 EndRoot units, so the apothem is

✔ 6

units long and the radius of the circle is

✔ 12

units long.

Each segment of the circle has an area equal to the difference between the areas of the sector and triangle, or (

✔ 48

π −

✔ 36

StartRoot 3 EndRoot) units2.

Write inequality to model the situation the number and of people who attended the game was at least50

Answers

Inequality to model the situation the number and of people who attended the game was at least50.

n was at least 50

means the minimum number was 50, but it could be more

n is greater than or equal to 50

n≥50

Define Inequality ?

The property of being uneven or unequal, for example. Social inequality is a. b: unequal opportunity or distribution. Lack of evenness is c. d: the quality of being changeable or variable.

Some of the more notable examples of social inequality include income disparity, gender inequality, access to healthcare, and social class. In the medical field, some patients receive better and more expert care than others.

To learn more about Inequality from the given link:

brainly.com/question/20383699

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Pls help me ill give brainliest

Do all 3 pls to get brainliest

Answers

Answer:

16.) c. 2x²+7x-15

17.) c. [tex]y=\frac{4}{9}x+\frac{17}{9}[/tex]

18.) D

Step-by-step explanation:

have a wonderful day! :D

in a circle with a radius of 7 feet, the radian measure of the central angle subtended by an arc with a length of 4 feet is 0.57 . the area of the sector formed by the arc is square feet. assume π

Answers

The area of the sector formed by the arc of the circle is 14 square feet.

What is sector of the circle?

A sector of a circle is a pie-shaped section of a circle formed by the arc and its two radii. A sector is formed when a portion of the circle's circumference (as well known as an arc) and two radii cross paths at both endpoints of a arc. A sector of a circle has the shape of a pizza slice or even a pie.

Two radii and an arc encircle a portion of a circle.A circle is divided into two segments which are referred to as minor sectors as well as major sectors.The major sector is represented by the larger portion of the circle, while the minor sector is represented by the smaller portion.

Now, according to the question;

Length of a sector is estimated by the formula = ∅×r

where ∅ is the angle formed by sector in radians and r is the radius of the circle.

Thus,

∅ = Length of a sector/r

The radius is r = 7 ft

The value of length of a sector = 4 ft

∅ = 4/7

∅ = 0.57 radians

Now, estimate the area of the sector.

area of a sector = (∅/2)×r²

Substituting the values.

area of a sector = (4/7/2)×7²

                          = (4/14)×49

area of a sector = 14 ft²

Therefore, the area of the sector is calculated as 14  ft².

To know more about the sector of the circle, here

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The complete question is-

In a circle with a radius of 7 feet, the radian measure of the central angle subtended by an arc with a length of 4 feet is . The area of the sector formed by the arc is square feet. Assume π = 3.14, and round your answers to the nearest hundredth.

Translate this sentence into an equation.
21 more than Diane's savings is 74.
Use the variable d to represent Diane's savings

Answers

Answer:

74-21=d or d+21=74

Step-by-step explanation:

Answer:d+21=74 and if you want to solve it would be

get d by itself so minus 21 on both sides 21-21 is

d= 74-21 is 53

so d=53

Step-by-step explanation:

Fyggugffghxdghgdfyhgg

Answers

Now you just wasted your points for putting all those letters

Mr. Littles is building a triangular sandbox using three boards. He already has two boards that measure 9 feet and 12 feet. Select all of the values that could represent the length of the third board of his triangular sandbox.

Answers

Answer:

9 feet, 15 feet, 19 feet

Step-by-step explanation:

Options are:

2 feet 3 feet 9 feet 15 feet 19 feet 21 feet 30 feet

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

Use the triangle inequality theorem: sum of any two side must be greater than the third side by length

2 feet     ⇒  no, as 2 + 9 < 123 feet     ⇒  no, as 3 + 9 = 129 feet     ⇒  yes15 feet    ⇒  yes19 feet    ⇒  yes21 feet    ⇒  no, as 9 + 12 = 2130 feet  ⇒  no, as 9 + 12 < 30

Which angle number is a vertical to

Answers

angle 6 of all of them

what is the answer?​

Answers

Answer: that’s super easy

Step-by-step explanation:

The answer is option a

EASY QUESTION !! IF YOU GET IT RIGHT ILL AWARD BRAINLIEST!!

Answers

Answer: x=18, y=30

explanation: bc i’m right

please answer due at 12 ​

Answers

Answer:

7. x + 1

8. d + 4

9. y + 3

Step-by-step explanation:

7. x + 1

8. d + 4

9. y + 3

the measure of an angle in standard position is given. find two positive angles and two negative angles that are coterminal with the given angle.

Answers

To find coterminal angles, you have to either add or subtract 2π. In this case, you would use 8π/4 so there is a common denominator.

Positives:

-3π/4+8π/4 = 5π/4

5π/4+8π/4 = 13π/4

Negative:

-3π/4-8π/4 = -11π/4

-11π/4-8π/4 = -19π/4

What is the measure of an angle?

In geometry, an angle measure is the length of the angle formed by two rays or arms intersecting at a common vertex.

Using a protractor, angles are measured in degrees (°). Joseph Huddart created the protractor in 1801. It was a more sophisticated protractor.

The angle created at the center of a circle is measured in radians, the unit of angular measurement. It is described as an angle that subtends from a circle's center and intercepts at an arc with a radius equal to the circle's radius. 57.3° is equal to one radian.

Acute angle, Obtuse angle, Right angle, Straight angle, reflex angle, and full rotation are the names of basic angles.

To learn more about measure of an angle, visit:

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Find the percent of change from 15 books to 20 books.


I AM SO LOST

Answers

Answer:

33.3333333333

Step-by-step explanation:

Answer:

33.3333% increase

Step-by-step explanation:

simplify....

15:20

Calculate percentage change

from V1 = 15 to V2 = 20

(V2−V1) |V1| ×100

= (20−15) |15| ×100

= 515×100

= 0.333333×100

= 33.3333%change

= 33.3333%increase

It's an increase cuz your going up and not going down a number

Hope this helped a little!

Bags of flour come in 3 sizes: Small bag: A 200 g bag costs 40p. Medium bag: A 1 kg bag costs £1.80. Large bag: A 2 kg bag costs £3.80. Calculate the cost of 1 kg for the small and large bags. Give your answer in pounds to 2 dp.

Answers

Answer:

Small bag: 1kg cost 200.00p

Large bag: 1kg cost £1.90

Step-by-step explanation:

Small bag: A 200 g bag costs 40p

Medium bag: A 1 kg bag costs £1.80.

Large bag: A 2 kg bag costs £3.80.

Calculate the cost of 1 kg for the small and large bags.

Small bag: A 200 g bag costs 40p

200g cost 40p

1 gram cost 40/200

1 gram = 0.2 p

1000 g = 1kg

1kg cost = 0.2p × 1000

= 200.00p

Small bag: 1kg cost 200.00p

Large bag: A 2 kg bag costs £3.80.

Cost of 1kg = cost of 2kg bag / 2

= £3.80 / 2

= £1.90

Large bag: 1kg cost £1.90

Kayla received a 25% discount on the purchase of a $170 bicycle. What was the amount of the discount that Kyle received?

Answers

Total price 127.50 the discount was 42.50

the radius is 9 cm. what is the approximate circumference of the circle

Answers

Answer:

56.5487 (this is exact, just round it if you want)

Step-by-step explanation:

The formula to find the circumference is 2, pi, r (radius).

Please help me with this

Answers

Answer:

First, we need to find the slope.

Rise/Run

440-410/6-4

30/2 = 15

m = 15

Now we need to find the y-intercept using the slope.

15(4) = 60

410 - 60 = y int

b = 350

y=mx + b

y= 15x + 350

is anyonee uppppppp or is it just me

whats 4 + 4 because i dont know

Answers

the answer is 8 lol

Answer:

8

Step-by-step explanation:

4+4

8

You can rewrite it as

2+2+2+2

8

AP
Solve the absolute value inequality 2|x-7/2|+4>9 algebraically. Select the correct graph of the solution.

Answers

Answer:

x < 1 or x > 6

Step-by-step explanation:

Pls be right will give brainliest to the right answer

Answers

Answer:

c

Step-by-step explanation:

I’m guessing the answer is C

determine the intercepts of the line
y intercept (?,?)
x intercept (?,?)
PLEASE HELP ASAP

Answers

Answer:

y-intercept: (0, -0.7)

x-intercept: (-1.2, 0)

Step-by-step explanation:

To find the x-intercept (x, 0) of a line substitute y by zero in the equation of the line, and from the graph, it is the point of intersection between the line and the x-axisTo find the y-intercept (0, y) of a line substitute x by zero in the equation of the line, and from the graph, it is the point of intersection between the line and the y-axis

In the given figure

∵ The line intersects the y-axis at the point (0, -0.7)

∴ The point of intersection between the line and the y-axis is (0, -0.7)

→ By using the 2nd note above

The y-intercept is (0, -0.7)

∵ The line intersects the x-axis at the point (-1.2, 0)

∴ The point of intersection between the line and the x-axis is (-1.2, 0)

→ By using the 1st note above

The x-intercept is (-1.2, 0)

Sammy bought 3 pounds of oranges that cost $4.59. Determine the cost of 1 pound.

Answers

The cost of 1 pound of oranges is $1.53

Give another name for RS.

Answers

answer: SR because it is still meaning the same segment just a different way of naming it

can someone help me :)) please ASAP !! :)) thanks

Answers

Answer:

angle 2 would be 22

Step-by-step explanation:

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