Solve the linear system by using Subtraction Elimination.

4x + y = 8
x + y = 5

Answers

Answer 1

Answer:

y =4

x=1

Step-by-step explanation:

in comment

sbajbaaj


Related Questions

am i right??? if not pls help

Answers

Answer:

Ya I think your right

Step-by-step explanation:

What is the solution of 6 = x-2/4?

Answers

Answer: x=13/2

Step-by-step explanation: hope this helps!

a certain star is 3.7 x 10 to the second power light years from the earth period one light year is about 5.9 x 10 to the 12th power miles. how far from the Earth (in miles right is the star?​

Answers

a certain star is 3.7 x 10 to the second power light years from the earth period one light year is about 5.9 x 10 to the 12th power miles. how far from the Earth (in miles right is the star?

Im not sure what to do

Answers

Answer:

[tex]h(-1)=\frac{-2}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

[tex]h(x)=\frac{2x-6}{4x^2+8}[/tex]

h(-1) is x = -1

Step 2: Evaluate

Substitute:                    [tex]h(-1)=\frac{2(-1)-6}{4(-1)^2+8}[/tex]Exponents:                   [tex]h(-1)=\frac{2(-1)-6}{4(1)+8}[/tex]Multiply:                        [tex]h(-1)=\frac{-2-6}{4+8}[/tex]Subtract:                       [tex]h(-1)=\frac{-8}{4+8}[/tex]Add:                              [tex]h(-1)=\frac{-8}{12}[/tex]Simplify:                        [tex]h(-1)=\frac{-2}{3}[/tex]

Someone please help me out! I’m too lost pls thank you so much :( pls don’t ignore

Answers

Answer:

its abcd

this is the answer because its asking you for the pattern

hope i helped, TRUST ME ITS RIGHT

PLEASE HELP FAST! Solve for Y in the following system of equations!
X-y=-1
3x+5y=21
A.) 2
B.) 3
C.) 9
D.) 12

Answers

Answer:

B.) 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x - y = -1

3x + 5y = 21

Step 2: Rewrite Systems

x - y = -1

Add y to both sides:                    x = y - 1

Step 3: Redefine Systems

x = y - 1

3x + 5y = 21

Step 4: Solve for y

Substitution

Substitute in x:                              3(y - 1) + 5y = 21Distribute 3:                                   3y - 3 + 5y = 21Combine like terms:                     8y - 3 = 21Add 3 to both sides:                     8y = 24Divide 8 on both sides:                y = 3

Use 45-45-90 & 30-60-90 Special Right Triangles to Solve. find the missing sir length. Leave you answers as radicals in simplest form

Answers

Answer:5) x=y=7×6^1/2,6)x=38,y=19×3^1/2

7)m=n=18,8)u= 2×5^1/2,v=3

Step-by-step explanation: use trigonometry laws

Solve the equation. Explain or show your reasoning.

1/2 x -7 = 1/3 (x-12)

Answers

Answer:

x = 18

Step-by-step explanation:

1: 1/2x - 7 = 1/3x - 4

2: 3/6x - 7 = 2/6x - 4

3: 3/6x = 2/6x + 3

4: 1/6x = 3

5: x = 18

So I just need help. ​

Answers

Answer:

a = 100 + 45t

Step-by-step explanation:

$100 is a one time addition so it will be a constant

100

$15 is added three times a month, so $45 a month

t stands for months as shown in the question

100 + 15(3)t

100 + 45t

What is the radius of a hemisphere with a volume of 324\text{ ft}^3,324 ft 3 , to the nearest tenth of a foot?

Answers

Answer:

5.4 ft

Step-by-step explanation:

Given that the volume of the hemisphere sphere, [tex]V= 324 ft^3[/tex].

Let r be the radius of the hemisphere.

As the volume of the hemisphere, [tex]V=\frac {2}{3}\pi r^3[/tex]

By using the given value, we have

[tex]\frac {2}{3}\pi r^3=324[/tex]

[tex]\Rightarrow r^3=\frac{324\times 3}{2\pi} \\\\\Rightarrow r^3=\frac{324\times 3}{2\times3.14} \\\\\Rightarrow r^3=154.78 \\\\\Rightarrow r=\left( 154.78 \right)^{1/3} \\\\[/tex]

[tex]\Rightarrow r=5.4[/tex] ft

Hence, the radius of the hemisphere is 5.4 ft.

There are 10 seniors and 15 juniors in a gym class. What is the ratio of seniors to total students?

Answers

Answer:

for every 2 seniors there are 3 juniors or 2:3

The ratio of seniors to total students will be 2: 5.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

There are 10 seniors and 15 juniors in a gym class.

The total number of students will be given as,

Total students = 10 + 15

Total students = 25

Then the ratio of seniors to total students will be given as,

Ratio = Seniors / Total student

Ratio = 10 / 25

Ratio = 2 / 5

The ratio of seniors to total students will be 2: 5.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

#SPJ2

Matching: Connect the correct statement with the corresponding picture. There are multiple correct statements per picture.
A) System is consistent and independent
B) System is consistent and dependent
C) System is inconsistent
D) Only one solution to system
E) Infinitely many solutions to system
F) No solutions to system

Answers

Answer:

Figure 1: A , D

Figure 2: B, E

Figure 3: C, F

Hope that helps!

A HARD DRIVE COST 225,plus 40 hours per hour

Answers

Y=40x + 225
Because x is your per hour cost.
225+40h=y
225 + 40x = 385
-225 -225
------- -------
40x = 160
x= 4

pls help , I’ll give you brainly

Answers

Answer:

your answer is C

Step-by-step explanation:

i took the quiz, may i have brainliest please!  :D

Bob and Alice have designed and created a website for their high school. The first week they had 5 visitors to the site; the second week, they had 10 visitors; and during the third week, they had 20 visitors. If the trend continues, how many visitors can they expect in the fifth week? Explain your answer.

Answers

Answer:

80 visitors

Step-by-step explanation:

From the above question, we can see that:

The trend is explained using geometric sequence

The formula for Geometric sequence is given as:

an = ar ^n - 1

Where a = first term

r = common ratio

n = number of terms

an = nth term

From the above question, let the number of term be equal to the number of weeks.

First week = First term = 5

Second week = Second term = 10

Third week = Third term = 20

Common ratio = a2/a1 = a3/a2 = 10/5 = 20/10 = 2

We are to find the number of visitors for the Fifth week = fifth term,

Hence:

a5 = 5 × 2^5 - 1

a5 = 5 × 2^4

a5 = 80 visitors

The number of visitors we can expect for the fifth week = 80 visitors

Antonio baked 150 muffins. Of all the muffins he baked, 46% of them were blueberry. How many blueberry muffins did Antonio bake?
(NEEDS TO BE ANSWERED TODAY)

Answers

Answer:

69

Step-by-step explanation:

hope this helps :)

Answer:

69!

Step-by-step explanation:

Hope i helpedhave a nice day

Helpppppp!

The locations of E' and F' are E' (−8, 0) and F' (0, 4), and lines g and g' are parallel.
The locations of E' and F' are E' (−4, 0) and F' (0, 2), and lines g and g' are the same line.
The locations of E' and F' are E' (−2, 0) and F' (0, 1), and lines g and g' intersect at point F.
The locations of E' and F' are E' (−1, 0) and F' (0, 0), and lines g and g' are not related.

Answers

Answe The locations of E' and F' are E' (−8, 0) and F' (0, 4), and lines g and g' intersect at point F.

The locations of E' and F' are E' (−4, 0) and F' (0, 2), and lines g and g' are the same line.

The locations of E' and F' are E' (−2, 0) and F' (0, 1), and lines g and g' are parallel.

The locations of E' and F' are E' (−1, 0) and F' (0, 0), and lines g and g' are not related.

are your answer options I went with..  The locations of E' and F' are E' (−2, 0) and F' (0, 1), and lines g and g' are parallel.

Step-by-step explanation:

Choose the fastest jogger.
A. Julie walks 10 miles in 2.5 hours.
B. Larry walks 15 miles in 2 hours.
C. Mike walks 6 miles in 1 hour.
D. Katie walks 18 miles in 3 hours

Answers

Answer:

Larry

Step-by-step explanation:

15divided by 2 is 7.5

Julie:4

Mike:6

Katie:6

Answer: B
Explanation: I made each into a ratio and then simplified that ratio to see how many miles each person jogs in a minute and B jogged the most in a minute.

Select all the rates that are unit rates.

1. [tex]\frac{1}{1/3}[/tex]

2.[tex]\frac{2/3}{1}[/tex]

3. [tex]\frac{2}{3}[/tex]

4. [tex]\frac{3}{1}[/tex]

5. [tex]\frac{1}{9}[/tex]

Please help me im confused on what I do here..

Answers

Pretty sure it’s 2 and 4. A unit rate is usually something to one 1. So 1 would be in the denominator.

Simplify. (5x2+2x−5)−(3x2+3x+1)
8x2+5x−4
2x2−x−6
2x2−5x+4
2x2+5x−4

Answers

Answer: the answer is 2x2 - x -6

Step-by-step explanation: I searched it

What is the difference between an equation and an inequality?
a - an equation includes numbers, but an inequality doesn't
b- an inequality includes numbers, but an equation doesn't
c- an equation includes an equal sign, but an inequality doesn't
d- an inequality includes an equal sign, but an equation doesn't

Answers

Answer:

The correct answer should be C. Hope I helped.

Answer:

C - an equation includes an equal sign, but an inequality doesn't

Step-by-step explanation:

Although both equations and inequalities are ways to show how expressions relate to one another, an equation is the relationship between expressions with an equals sign ( [tex]=[/tex] )  between them, however, an inequality is a way to express two or more expressions with [tex]<[/tex], [tex]\leq[/tex], [tex]>[/tex] or [tex]\geq[/tex] between them. They both include numbers, so the correct option is C.

Hope this helps :)

In the figure, XU=−4y+ 20 and XW=6y+ 10. Find the radius of the inscribed circle of △RST.

Answers

Answer:

16

Step-by-step explanation:

Answer:

Step-by-step explanation:

Did u find it

1k + 9>30

Plis ayúdenme

Answers

Answer:

Step-by-step explanation:

1k +9 > 30

1k +9 -9 > 30 -9

1k > 21

k > 21

PLLLLLZZZZZZ ANSWER NEED HELP!!!!!!!!!!!!!!!There's 5 red marbles, 2 green marbles, and 3 white marbles. Knowing that you picked a green marble with replacement, what is the probability of getting a red marble with replacement?

Answers

It’s a 5/9 chance

Add all the marbles 3yellow+5red+1green (because you already took one green out)= 9 marbles and then you have 5 marbles so you have a 5 chance of picking a red marble out of 9 marbles

The measures of the angles of a triangle are shown in the figure below. Solve for x

Answers

Answer:

7

Step-by-step explanation:

The angles that we are sure about is 33 and 90. The angles of a triangle add up to 180. 33 + 90 = 123. 180 - 123 = 57. 57 = 7x+8, 49 = 7x, x = 7.

Answer:

x = 7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Geometry

All angles in a triangle add up to 180°

Step-by-step explanation:

Step 1: Set Up Equation

33° + 90° + (7x + 8)° = 180°

Step 2: Solve for x

Combine like terms:                    7x + 131 = 180Isolate x term:                              7x = 49Isolate x:                                       x = 7

__Na2O + __ H2O → __NaOH

Answers

Answer:

Na20+H20 -> 2NaOH

Step-by-step explanation:

A man bought a calf for $200 and sold it for
$250. What was his gain as a percentage of the
cost price?​

Answers

Answer:

Step-by-step explanation:

250 is 125% of 200

So,

He gained 25% in profit

Based on the information given his gain as a percentage of the  cost price is 25%.

Using this formula

Cost price percentage=Selling price-Cost price/Cost price

Where:

Selling price=$250

Cost price=$200

Let plug in the formula

Cost price percentage=$250-$200/$200

Cost price percentage=$50/200

Cost price percentage=0.25×100

Cost price percentage=25%

Inconclusion his gain as a percentage of the  cost price is 25%.

Learn more here:https://brainly.com/question/18522227

what is 12 + 4y = -4x

Answers

Answer:

ummmm

Step-by-step explanation:

u already answer ur own question tho?

U-Move-It charges $18 per hour, plus a fueling fee of $45 to rent a truck. Bobby needs to rent a truck and can spend no more than $145. What could the inequality expression look like for this word problem?

WILL GIVE BRAINLIEST

Answers

Answer:

[tex]x\leq 5[/tex]

Step-by-step explanation:

45+18x=145

18x=100

x<=5

So x is equal to or less than 5

Hope this helps plz hit the crown :D

please help and explain i’ll mark brainliest!! worth a lot of points too

Answers

I’m gonna say that it’s ... 112
Other Questions
i need help with the je that asks which parent actually determines the sex the child Define the following terms.BoycottNonimportation agreementMilitiaMinutemanPetitionRepeal A nearsighted person has a far point of 40cm. What power spectacle lens is needed if the lens is 2cm from the eye Order the units or geologic time from the longest to the shortest era, period, epoch, eon. 2. Even though the British lost the battle at Fort Necessity, why was it significant? (1 point)Olt sparked outrage in the colonists who rebelled against the British for fighting in the French and Indian War.O It marked the beginning of Washington's leadership in the French and Indian WarIt set the stage for the rest of the war, setting up the French for victoryO It prompted the Iroquois and Algonquins to join forces to defeat the French. What will the date be in 2 months and 3 weeks? current date: December 13, 2020. The large subcontinent that is india is borded by a great ancient cilization or Harappan civilization. It is named after Harappa, one of its two important cities, that developed in the Indus river valley. Like other earlycivilizations, the river was used for theirrigation of crops. As farming increased, the population increased, and by about 3,000 B.C.E. neolithic villages were developing into larger cities. The other major city of the Indus Valley was Mohenjo-Daro. Both were large, around three miles in circumference, and had populations of around 40,000. Each had huge hilltop structures called a citadel. Unlike Mesopotamia or Egypt, it is impossible to learn much about the Harappan society for two reasons. First, archeologists cannot get to the earliest Harappan physical remains. Silt deposits buried the lndus valley so high that the level of the land as well as the water table was raised. Thus, the earliest Harappan remains lie below the water table. The earliest remains that archeologists can study begin at about 2500 B.C.E., when the Harappan society was fully developed.Second, historians cannot decipher Harappan writings. There is no Rosetta Stone for the Harappan written language. Although historians have thousands of clay seals, copper tablets, and other artifacts with Harappan script, they cannot read the ancient writings that allow them to learn details about their society.Cities were divided into lower dwellings and the higher level citadel, which housed important buildings. The large fortified citadels may indicate the existence of a theocratic and authoritarian society. The citadels were fortified with almost 40 foot walls, which may have served as protection for the cities populations in times of attack and as community centers in times of peace. The citadel in Mohenjo-Daro contains the earliest public water tank of the ancient world. The Great Bath measures 39 feet long and 22 feet wide. In the lower dwellings of Mohenjo-Daro, many people lived in one-room tenement structures. At the same time, there were individual houses of two the same time, there were individual houses of two a great ancient and three stories with over 20 - 30 rooms and numerous courtyards. Most of the larger houses had their own wells and built in brick ovens. Almost all of the houses had private bathrooms with showers and toilets that drained into the city sewage systems. The houses and sewage systems were just small features of Harappa and Mohenjo-Daros very well planned cities. Each city was laid out in a grid pattern, with rectangular blocks larger than modern city blocks. All houses were built of uniform oven- fired clay bricks. Houses had modern plumbing systems with baths, drains, and water chutes that led into sewers beneath the streets. The reason for this civilizations demise is unclear. We can only speculate a combination of a few factors such as: climate change left the valley dry with little water; over-planting may have left the cities hungry; and sickness and war may have left the cities too weak to survive. Until researchers are able to decipher Indus script, we may never know what actually occurred.____________________________________________________________________Questions:1. Not much is known about the Citadels. They may have served as protection for the cities population during times of attack. What evidence is there for this reasoning? Which of the following is NOT an example of a plant adaptation towards success in their habitat.Question 1 options:A.Colored flowers attract pollinators to scatter their seeds.B.Plants grow thorns to repel grazers to prevent damage.C.Plants grow towards light as they compete fro resources.D.Plants take in water for photosynthesis. Will give bnrainliest just help me plzz does anyone know how to do this??? please help thank you. which of these is not a part of the pistil of a flower ? a, Stigma.b, Stamen.c, Style.d, Ovary. A company charger shipping fee that is 4.5% of the purchase price for all items it ships. What is the fe to ship an item that costs $56 This one as well please 0.5 divided by 10 please help me Where did most peasants live in A. Camel- Skin tents. B.Caves in the cliffs. C. Mud-brick houses There are many new technologies in geography! Which new technology can help us to understand patterns in our world by using software to combine data with maps? A. remote sensing B. radar C. aerial photography D. geographic information systems (GIS) What is the equation of the line that passes through the point (-5,0) and has aslope of 3/5Quick please Plzz help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron Helppp find the solution to this equation 2x+4y=8. x=3y-6 What do x and y equal