Mathematics High School


Find the solution to the following system of linear
equations by using the substitution method.
y = 4x -4
X+ y = 11

Answers

Answer 1

Step-by-step explanation:

[tex]y = 4x - 4 \\ x + y = 11 \\ x + 4x - 4 = 11 \\ 5x = 15 \\ x = 3 \\ y = 4 \times 3 - 4 \\ y = 8[/tex]

Related Questions

what does 3x+8+9x^2 equal?

Answers

Answer:

Stays the same. OR Standard form: 9x^2+3x+8

Step-by-step explanation:

You can't factor it. When you add them it's the same bc, you can't combine anymore like terms. let me know if this helps at all? What is your objective? Tryna factor? Add polynomials? ???

SOMEONE PLEASE HELP ME T-T
Shania has 12 coins in her pocket. Of these coins, 5 are pennies and 7 are dimes. Shania randomly selects one coin from her pocket and, without replacing it, selects another coin from her pocket. What is the probability that both coins are dimes?

Answers

Answer:

10/12

Step-by-step explanation:

Answer:

10/12

Step-by-step explanation:

(4 + 2n) + (513 + 2).

Answers

Answer:

2n + 519

Step-by-step explanation:

Hope this helps! :)

Good luck♥

Help me please!
If you get it right, I’ll will brainliest u!!

Answers

Answer:

Angle S is a straight angle.

Step-by-step explanation:

180° is a straight line.

Maria sells a motorcycle for $5,000 and a car for $25,000. What is the total commission that she will earn on the sale of these two vehicles?

Answers

Maria will make 10% on 5,000 for the motorcycle and 15% on 25,000 for the car she sold

It says Use the distributive property to write the following in expanded form.
4(x+y)
write the expression using the WIRIS editor button​

Answers

Answer:

pretty sure it's 4x+4y however I'm not 100 percent sure

What is the value of p(b-c) when b=3,c=3 and p=-2

Answers

Answer:

0

Step-by-step explanation:

-2 (3 - 3)

distribute: -6 + 6

add: -6 + 6 = 0

Answer:

0

Step-by-step explanation:

p=-2,b=3,c=3

p(b-c)

-2(3-3)

-2(0)

0

or-2(3-3)

-6+6

0

hope it's helpful ❤❤❤❤

THANK YOU.

#

Factor.
y^2-12y+20
i need help

Answers

Answer:

(y−10)(y−2)

Step-by-step explanation:

It’s (Y- 10) and (y-2)

Hey I need help with this one question I don’t understand it brushed endnoteyrndjfnfjfjfiffj

Answers

the slope is -6 , -2x -6

Factorise fully
10z -80​

Answers

Answer:

10(z-8)

Step-by-step explanation:

if you have to factor you have to have something like

number *number or number* parenthesis

10z - 80 is number *number -number so change

10 *(z-8)

The answer should be 10 ( z-8)

Sonia is older than her brother Eddie.The sums of their ages is 38.The differences is 14

Answers

Answer:

Sonia is 26

Eddie is 12

Step-by-step explanation:

4 + 6 (3) + 2(5 1/2 - 1)

Answers

4+6(3)+2(5.5-1)
4+18+9
=31

use the distributive property to find two expressions that are equivalent to 7(3x - 4)

please help me i cant do this anymore, i'm having a panic attack and this is all due in 4 hours

Answers

I could only figure out one... sorry! Good luck

The answer is: 21x-28

1. A jar contains 10 marbles, 6 marbles are red, and 4
marbles are blue. If 2 marbles are chosen one at a time
with replacement, what is the probability that the first
marble will be blue and the second marble will be red?
A 1/10
B.6/100
D. 1/25
Independent or Dependent?
Final Answer:

Answers

Answer:

1/20

Step-by-step explanation:

trust me............or not...jk its either 1/20 or 1/2 NO its 1/20

A shark can swim at an average speed of 25 miles per hour. At this rate, how far can a shark swim in 2.5 hours?

Answers

Answer:

62.5 miles in 2.5 hours

Hope this helped.

Right answer gets brainlist

Answers

Answer:

2057

Step-by-step explanation:

Tammy jumped up 9 steps. Each step was
7/10 feet high.
How high up did she jump altogether?
Write your answer in simplest form.

Answers

Answer: 6 and 3/10 0r 63/10

Step-by-step explanation:

ez pls just osmoene help
Which answer below represents the following mixed radical written as an entire radical?

3a2b3 18a7b113

Select one:
a. 486 a13b20 3
b. 45 a13b20 3
c. 54 a9b14 3
d. a 54 a3b14 3

Answers

C. Is the answer if I am not wrong

What is the area of this triangle?

A=bh2

17 m²

30 m²

60 m²

120 m²

Answers

Answer:

120

Step-by-step explanation:

alls you do is plug in the numbers its not hard sweetie

Answer:

120 m2

Step-by-step explanation:

I took the test hope this helps

Which list orders the numbers from least to greatest?

Answers

Answer:

D)

Step-by-step explanation:

I hope this helps :)

Joseph is saving his money. He currently has $5, and his dad gives him $2 each week. Which type of function would best represent?

Answers

Answer:

d) linear

Explanation:

Since Joseph is always getting the same amount of money the function will be linear.

HELP
HELP
ITS HARD
pls pls pls pls pls

Answers

you have to do the amount of hay one horse can eat times by how many horses there are. then you have to do that times the amount of days to see how much hay they ate overall. so that’s 21x20x14, which is 21(20x14) and that equals 5880. so the answer is C and the blank is 5880. hope this helps!

Which of these cannot represent the lengths of the sides of a right triangle?


A.)3 ft, 4 ft, 5 ft
B.)6 in., 8 in., 10 in.
C.)16 cm, 63 cm, 65 cm
D.)8 m, 9 m, 10 m

Answers

D because it is talking about meters hope this helps
D can’t represent the sides of a right triangle

Vhich of the equations below represents a line parallel to the x-axis?
A. y = 3
B. y = X
C. y = 1/x
D. x = 3

Answers

I think it’s B, y=X. Hope it works
The answer is A. y=3

A ceramic vase that cost an antique store $5 was marked $20. What is the percentage markup on the price of the ceramic vase?
15%
75%
300%
400%

Answers

the answer would be 75%%%%

what is the area of the figure below?

Answers

109 inches is the answer! multiply the sides

Alonzo has completed 44 Deliveries so far this week he needs to make 55 deliveries for the week what percentage of his delivery has Alonzo completed?80%

Answers

Answer:

80%

Step-by-step explanation:

Find 44/55 and multiply the result by 100%:  (0.8)(100%) = 80% (completed)

help please, I'll give brainliest :< to whoever can answer and give the solutions​

Answers

Answer:

3. Fifteen weeks

Step-by-step explanation:

well if you subtract the 4000 from the 10000 you get 6000 and then divide 6000 by the 400 and you get 15

What is the slope intercept ?

Answers

Answer:

y=mx+b

Step-by-step explanation:

that is the equation

PLEEASEEE HELP ME NOONE WILL HELP ME PLEASE HELP ME

Answers

Answer:

63.97 sheets of paper

Step-by-step explanation:

40-18.25 = 21.75

21.75 divided by 0.35 = 63.97

Other Questions
NEED HELP ASAP! 20 Points Reward!Ancient Indus Valley Civilization and Ancient Mesopotamia were in the same geographical region. A.) TrueB.) False help yehhwhwwhebbrdbababebebdbsbwbbrbsj Passage 1Passage 2Which statement from Passage 2 is BESTsupported by information in the chart on the lastpage of the passage?London's Watchtower:Big BenThe analysis would consider the options forlong-term upkeep of the Palace of Westminsterand Big Ben.The fact that the tower does indeed lean about46 cm to the left of its peak causes some concern.Burland claims that Big Ben won't come close tothe leaning Tower of Pisa's tilt for at least"10,000 years.Burland is best recognized for his work onstabilizing the Leaning Tower of Pisa in Italy12 3 4 5 6 2. Identify the measure of angle x. (Write your answer in number form only, 1 pointfor example 8. No degree symbol). *73 what is the gradient of (0,3) and (1,8) LUCTURE1 pesYou are the ruler of a country and need to control land that would best benefit yourgoals of imperialism. You have the opportunity to take over a piece of land but othercountries are also interested in this location and you don't want them to benefit fromthis region. The existing government is independent and willing to work with you if youhelp them by preventing others from taking over if you set up a system of indirectcontrol.The above situation is an example of which form of imperialism?Sphere of InfluenceO ProtectorateO ColonyEconomic Imperialism Which list places events in the correct sequence?A-Arab Muslims defeat Byzantines and Persians, Muhammad dies, Abu Bakr unifies followers, Abbasid Caliphate caliphate established, Umayyad Caliphate caliphate establishedB-Muhammad dies, Abu Bakr unifies followers, Arab Muslims defeat Byzantines and Persians, Abbasid Caliphate caliphate established, Umayyad Caliphate caliphate establishedC-Abu Bakr unifies followers, Muhammad dies, Umayyad Caliphate caliphate established, Arab Muslims defeat Byzantines and Persians, Abbasid Caliphate caliphate establishedD- Muhammad dies, Abu Bakr unifies followers, Arab Muslims defeat Byzantines and Persians, Umayyad Caliphate caliphate established, Abbasid Caliphate caliphate established Answer ian rlly kno ........... In a sample of 31 kids, their mean time on the internet on the phone was 36.5 hours with a sample standard deviation of 8.3 hours. Which distribution would be most appropriate to use, when we assume these times are normally distributed PLEASE HELPPPWhich of the following is an example of how an increase in biodiversity would influence an ecosystem?A The lower variety of plants it would produce will protect the ecosystem from disease.(An increase in the number of species in the ecosystem would make the ecosystem stronger by increasing itsstability and resistance to outside influences.Biodiversity doesn't have an influence on an ecosystems health.An increase in the number of species would decrease ecosystem productivity and survival because of thecompetitive relationships. What is the area of the circle? *10 ft31.4 square feet78.5 square feet314 square feet15.7 square feetT What is repeating in communication? A function is shownf(x)=2/3x+3 what is the value of f(12) Who were "ALL" the Character's in Iroquois Creation How many years did Stalin say they were behind advanced countries? pls help this is due today whoever anders the most questions gets brainliest Who was the first women ever appointed to a Cabinet position?Question 5 options:Susan B. AnthonySusan RiceElizabeth DoleFrances Perkins Which option below best explains the impact of Harriet Beecher Stowe on the abolitionist movement?A) She strongly asserted that violence was needed to end slaveryB) She got Abraham Lincoln to issue the Emancipation ProclamationC) She provoked the emotions of many people to have compassion for slaves using her book, Uncle Tom's CabinD) All of the above what is the verb and subject in El muchacho es Ronaldo Read the excerpt from "Politics and the English Language" by George Orwell. There is a long list of fly-blown metaphors which could similarly be got rid of if enough people would interest themselves in the job; and it should also be possible to laugh the not un- formation out of existence, to reduce the amount of Latin and Greek in the average sentence, to drive out foreign phrases and strayed scientific words, and, in general, to make pretentiousness unfashionable. But all these are minor points. The defense of the English language implies more than this, and perhaps it is best to start by saying what it does not imply. What is the authors purpose in this paragraph? to entertain readers with complex words to entertain readers with clever ideas to persuade readers to use more Latin and Greek in writing to persuade readers to eliminate certain types of vague language