Mathematics High School

Solve the system by substitution.
x = 9y
x-5y=20

Answers

Answer 1

Step-by-step explanation:

hope this helps you! have a great day

Solve The System By Substitution.x = 9yx-5y=20
Answer 2

The solutions of the system of equations are x = 45 and y = 5.

What is the system of equations?

One or many equations having the same number of unknowns that can be solved simultaneously called as simultaneous equation. And simultaneous equation is the system of equation.

Given:

The system of equations,

x = 9y  .... (1)

x-5y=20 ......(2)

Substituting the value of x from the equation 1 to equation 2,

we get,

9y - 5y = 20

4y = 20

y = 5

Then, x = 5(9) = 45

Therefore, the solutions of the equations are x = 45 and y = 5

To learn more about the system of equation;

brainly.com/question/13729904

#SPJ2

Related Questions

Recopier et compléter chaque phrase.
....d'un repère est le seul point dont les ... sont
égales à zéro.
b. Tous les points situés au-dessus de l'... des abscisses
ont une ordonnée et ceux situés au-dessous, une
ordonnée
c Tous les points situés à gauche del... des ordonnées
ont une négative et ceux situés à droite, une ...
positive
d. Tous les points de l'axe des ... ont une abscisse
égale à zéro.
e. Tous les points de l'axe des ... ont une ordonnée
égale à zéro.

Answers

Unnoticed 507 is:67 is 9$

Can someone help me plzzz and thank you

Answers

Answer:

(0.5,-6)

Step-by-step explanation:

mid point=(x1+x2)/2

 =(-3+4)/2

= 1/2

=0.5

midpoint=(y1+y2)/2

      =(-9+(-3))/2

=(-9-3)/2

=--12/2

=-6

HCF of 225 and 270 is?​

Answers

Answer:

I believe it's 45

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

270 = 1*225 + 45

225 = 5 * 45 + 0

HCF = 45

The above is Euclid's method for finding the HCF.

The other method is by finding the prime factors:

225 = 3 * 3 * 5 * 5

270 = 2 * 3 * 3 * 5

We pick out common factors:

So the HCF  3 * 3 * 5

= 45.

Angle A and angle B are complementary, and their measures
have a difference of 20°. What are the measures of the angles?

Answers

Answer:

35° and 55°

Step-by-step explanation:

Complementary angles sum to 90°

let one angle be x and the other x + 20 , then

x + x + 20 = 90

2x + 20 = 90 ( subtract 20 from both sides )

2x = 70 ( divide both sides by 2 )

x = 35°°

x + 20 = 35 + 20 = 55

The 2 angles are 35° and 55°

Use the distributive property to write an equivalent expression
3(3W – 5x + 1)
Answer:
Submit Answer
help no file plz

Answers

Answer:

9w-15x+3

Step-by-step explanation:

3(3W – 5x + 1); using distributive property

3 times 3w= 9w

3 times -5x= -15x

3 times 1=3

combine; 9w-15x+3

PLEASEE HELP WILL GIVE BRAINLIEST

Answers

Answer:

125 cu

Step-by-step explanation:

5 x 5 x 5 = 125

whats the 7482th digit of pi
find it if you can

Answers

i think the 7482th digit is 9

Answer:

...4850042818418295383774717036791912893763087010427207210527934076159095560569028788415435937041294487067737642712638215283791146308614599688138515495896934947775300910908956450628879874949987918977330055395549969672231130329962237357438567780028847289642133583266974725834606152803712627432217243252933925759249244741154505859760314253954019027327179534824534471181832675337725688313193570

Step-by-step explanation:

Brianna planted daffodils and tulips in her garden she planted 4 daffodils for every 3 tulips if Brianna planted 28 flowers in all how many tulips did she plant

Answers

12 tulips
16 daffodils

Answer:

12 Tulips

Step-by-step explanation:

Daffodils - 4, 4, 4, 4 = 16

Tulips -       3,3,3,3 = 12

28 flowers in all

Plz help so I can pass

Answers

Answer: 36.2

Step-by-step explanation:

divide 30 by two (15)

use the pythagorean theorem (a^2+b^2=c^2)

15^2+33^2=x^2

225+1089=x^2

1314=x^2

36.249137... = x

What is the area of the shaded portion of the trapezoid in the figure, in terms of? The figure is not drawn to scale. All of the given measurements are in feet.

Answers

Answer:

(150-36π) ft^2

Step-by-step explanation:

we need to subtract the area of the circle from the area of the trapezoid to find the area of the shaded region.

area of circle=πr^2=π6^2=36π ft^2

area of trapezoid=(1/2)(a+b)h=(1/2)(12+13)12=150 ft^2

so, the area of trapezoid-area of circle=(150-36π) ft^2

Simplify: a(a+b+2)- 2(a²+ab+2a)+3(a+ab)​

Answers

Step-by-step explanation:

I think you are 100 percent Clear.Thanks

Emily has 6 pages of homework to do. If she can finish 3/8 a page in one
hour, how many hours will her homework take?

Answers

Answer:

16 hours

Step-by-step explanation:

To make it easier, we can put 3/8 as 37.5, and 6 as 600.

37.5 / 600 = 16

16 hours of homework.

From 6am to 9am customers arrive in... From 6am to 9am customers arrive in droves to Betty's Bakery for her annual, 1 day only, cake sale. During that 3 hour period 1.75 customers enters the Bakery every minute. Betty and her staff can box cakes and check out customers only at the rate of 70 customers per hour. What is the average waiting time (minutes) for the customers who arrive in this 3-hour period of time?

Answers

Answer:

The average wait time for customers arriving in this 3-hour period of time is 1.5 minutes.

Step-by-step explanation:

Since from 6am to 9am customers arrive in droves to Betty's Bakery for her annual, 1 day only, cake sale and during that 3 hour period 1.75 customers enters the Bakery every minute, and Betty and her staff can box cakes and check out customers only at the rate of 70 customers per hour, to determine what is the average waiting time in minutes for the customers who arrive in this 3-hour period of time, the following calculation must be performed:

1.75 x 60 = 105

105/70 = 1.5

Therefore, the average wait time for customers arriving in this 3-hour period of time is 1.5 minutes.

I need help please help me !!!! :(

Answers

Answer: I can’t help. That is a district test, that the score doesn’t impact your grade, it just shows what you need to know.

Step-by-step explanation:


Tony has begun to save money to buy a new video game. At the end of the first week, he has $8 in his savings. At the end of the second week he has $11 in savings, and after the third week he has $14.
Tony feels confident that he can continue this same pattern of saving money to buy the game.
Which function describes the sequence?

Answers

i’m not sure but the patterns seems to be adding three every week.

Determining the Scale Factor of a Dilation Consider the dilation of pentagon ABCDE by a scale factor of If AB = 12, then A'B' A> If C'D' = 5, then CD = ​

Answers

Answer: 6 & 10 (Just to backup the other person. ^)

Step-by-step explanation:

Right on Edge. 2022

Jenny runs a daycare center and charges $60 per day for each child. There are currently 50 children enrolled at the daycare. At a recent conference, Jenny was advised to lower her rates in order to stay competitive in her area. For each price decrease of $4 per day, the number of children enrolled at the center increases by two.
Write the equation that can be used to determine the number of price decreases, x, in dollars, for which the daycare center has a daily revenue of $2,800.
A.
(60 - 4x)(50 + 2x) = 2,800
B.
(60 + 4x)(50 - 2x) = 2,800
C.
(60 - 2x)(50 + 4x) = 2,800
D.
(60 + 2x)(50 - 4x) = 2,800

Answers

Answer:

Step-by-step explanation:

D

if someone could please please help me with this I would appreciate it , if you could also explain your answer that would be great !

Answers

Answer:

height for the building = 551.8 ft

Step-by-step explanation:

The info given describes the shape of a right triangle.

Thus:

Reference angle = Angle of elevation = 23°

Opposite side = height of the building = ?

Adjacent side = 1,300 ft

Apply trigonometric function, TOA:

Tan 23 = Opp/Adj

Tan 23 = Opp/1,300

1,300 × Tan 23 = Opp

551.817261 = Opp

Opp ≈ 551.8 ft

height for the building = 551.8 ft

Can someone please help me with math

Answers

Answer:

B. Y=2x+3

Step-by-step explanation:

I am not sure if you want the top one to be answered. However, The answer to the bottom one is B.

Hope this Helps,

-Jay

4(a + -5) in expanded form?

Answers

Answer: a+-5 x 4 (I THINK)

Step-by-step explanation:

what are prime factors of 90​

Answers

Answer:

2×3×3×5

Step-by-step explanation:

2×

[tex]{3}^{2} [/tex]

×5

Hannah Earns $68.00 per hour She is given a pay rise of 10% Workout how much extra money she gets per hour​

Answers

hope that this helps!

what is 19 + 6x + 7 + 8x = 96

Answers

Correct answer is
X=5


The total area of a cube is 1350 square inches. Find the dimensions of
this cube?

Answers

Answer- 15

Explanation-

what is the Surface area​

Answers

Answer:

104

Step-by-step explanation:

Justin get to the basketball game at 7:35 pm and it last for 3 hours and 27 minutes. what is the time now​

Answers

11:02

i don't know if im correct, sorry.

The height of the prism is 4 centimeters. What is the volume of the prism in cubic centimeters?
A.740 cm3
B.35.88 cm3
C.10.2cm
d.8.97 cm3

Answers

B.35.88 cm3
Explanation :

PLEASE HELP I WILL MARK BRAINLIEST

Answers

Answer:

I think 96° but not fully sure sorry if wrong

You roll a 6-sided die two times. What is the probability of rolling 1 and then rolling a 2

Answers

Don’t answer for Luigoshow

Match each shape with its corresponding formula for area.

1. the line which divides a figure into two congruent mirror images
rotational symmetry
2. property where a figure can be folded along a line to create two congruent mirror images
line symmetry
3. property where a figure can be rotated less than 360° and still look the same
line of symmetry

Answers

Answer:

1- line of symmetry

2- line symmetry

3- rotational symmetry

Step-by-step explanation:

im pretty sure because i just did this unit :]

Other Questions
Which of the following pointswould be plotted in QuadrantIV on a coordinate grid?A. (2,3)B. (-4,-9)C. (-9, 3)D. (5, -6)WIB PLSSSSSS HELP I WILL GIVE BRAINLEST I PROMISSSSSSSSSSSSSE It is Sunday and you are making your plans for the week. Fill in your plans on the calendar (1 per day) in Spanish. Then, write 7 sentences in Spanish about your plans using the ir + a + infinitive structure. Which statements about hydrothermal vents are true?Choose all correct answers.Hydrothermal vents can eventually close up.Eight-foot long worms and blind fish may live near a hydrothermal vent.Minerals and gases may cause black smoke to flow from a hydrothermal ventCold water flows from hydrothermal vents and is warmed by the surrounding water Para ya por favor Cual de los siguientes planteamientos se cumplen en relacin a la energa en un ecosistema * A.La energa fluye de los hetertrofos a los auttrofos B.La energa, a menudo se libera de un ecosistema en forma de luz C.La organizacin de productores-consumidores y descomponedores muestra como la energa se concentra de manera mas alta en los descomponedores D.Para la mayora de los ecosistemas la energa proviene de la luz can someone please help me hi i like cheesi like cheese e i like chi like cheese eese i like cheese i like cheesi liki like cheese e cheei like chi lii like cheese ke chei like chei like cheese ese ese eese se e 2. Jacquelyn has 50 vocabulary words to study for an exam. She creates a flashcard for each word to study. Day 1 she studies 10 of the flash cards. Day 2 she studies the same 10 cards from the first day along with 5 new cards, for a total of 15 cards. Day 3 she studies the 15 cards she studied on the second day along with 5 new cards, for a total of 20 cards. Jacquelyn continues to increase the number of cards she studies each day by 5. (a) Write a recursive rule to represent the number of cards Jacquelyn studies on day n.(b) Write an explicit rule to represent the number of cards Jacquelyn studies on day n.(c) On which day will Jacquelyn first study all 50 vocabulary cards? ONLY ANSWER IS U KNOWSue Ellen is preparing for an oral presentation for social studies class. Which of the following would be the BEST example of a powerful oratory that she could use while preparing her presentation? A: Martin Luther King, Jr.s biograph B: The Diary of Anne Frank C: Martin Luther King, Jr.s I Have a Dream speech D: The Anne Frank Museum in The Netherlands You select a marble without looking and then put it back. If you do this 6 times, what is the best prediction possible for the number of times you will pick a green marble?help fast An AC circuit has resistor, capacitor and inductor connected in series. It isconnected to a voltage supply at resonant frequency. If the frequency of thevoltage supply is reduced, which of the following quantities will be reduced? * Te gustarair al cineeste fin de semana?S, me gustara ir al cinemPuedeseste fin de semana? S) A $4.00 sales tax is charged for a $50.00 purchase. At this rate, what is the sales tax for a $1200.00purchase?Please help me :) Im down bad I will give brainlyest if someone names 15 mcyt on the dream smp. need help on this plz A 9.00 g bullet is fired horizontally into a 1.20 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.20. The bullet remains embedded in the block, which is observed to slide 0.390 m along the surface before stopping.Required:What was the initial speed of the bullet? PLZ HELP I AM TAKING A QUIZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Are involuntary muscles A) cardiacB) smoothC) skeletal Someone said that light bent around a corner to reach an object. Is this possible? what are the respiratory movement of Man?Are they same in a grasshopper or a fish? Please help im almost done (this is 12 year old math)