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

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Related Questions


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

Answers

Answer- 15

Explanation-

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

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


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.

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.

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:

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 :]

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

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

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

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

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!

PLEASEE HELP WILL GIVE BRAINLIEST

Answers

Answer:

125 cu

Step-by-step explanation:

5 x 5 x 5 = 125

PLEASE HELP I WILL MARK BRAINLIEST

Answers

Answer:

I think 96° but not fully sure sorry if wrong

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

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.

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

Answers

Correct answer is
X=5

what are prime factors of 90​

Answers

Answer:

2×3×3×5

Step-by-step explanation:

2×

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

×5

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.

4(a + -5) in expanded form?

Answers

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

Step-by-step explanation:

what is the Surface area​

Answers

Answer:

104

Step-by-step explanation:

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$

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.

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 :

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:

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

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

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

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°

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