Mathematics High School

Solve the system by substitution
y=-8x -24
y=-4x

Answers

Answer 1

Answer: 8

Step-by-step explanation:

plug y into the first equation:

8x+5y=24

8x+5(-4x)=24

8x-20x=24

-12x=24

x=-24/12

x=-2

then plug x to the second equation

y=-4

y=-4(-2)

y=8

x=-2

y=8

Answer 2

Answer:

(- 6, 24 )

Step-by-step explanation:

y = - 8x - 24 → (1)

y = - 4x → (2)

Substitute y = - 4x into (1)

- 4x = - 8x - 24 ( add 8x to both sides )

4x = - 24 ( divide both sides by 4 )

x = - 6

Substitute x = - 6 into either of the 2 equations and evaluate for y

Substituting into (2)

y = - 4(- 6) = 24

solution is (- 6, 24 )

Related Questions

a
Russ worked a total of 135 hours during the month of July. He earned $3,600.
Russ earned $25 per hour each weekday that he worked. He earned $40 per hour
each Saturday that he worked. How many hours did he work on the weekend?

Answers

Answer:

3375

Step-by-step explanation:

What is:
a. 2(6x - 4)+3(2x - 3)
b. 5+ (6x + 4)

Answers


A=18x−17
B=6x+9 hope it helps

PLEASE HELP!
Use a compass and straightedge to complete the following construction Leave all construction marks. Having a sharpened pencil will allow for more precise arcs. Make sure that your construction marks are dark enough to see.

Construct a perpendicular line to the given line through the point on the line.
link to the plot: https://www.mathopenref.com/constperplinepoint.html

Answers

Answer:

draw a line straight down through p


Type the expression that results from the following series of steps:
Start with z and add 5.

Answers

the answer will be z+5

a big beach towel has a width that is 3 feet less than its length. Of the towels area is 28 feet, what is its length

Answers

Answer:

the answer is 9.333

Step-by-step explanation:

because if the towel of the width that is 3 feet less so you do 28/3=9.333

Answer:

length = 7 ft

Width = 4 ft

Step-by-step explanation:

length = l

Width = l -3

Area = 28 sq.ft

length *width = 28

l*(l-3) = 28

l*l - l*3 = 28

l² - 3l - 28 =0

l² - 7l + 4l - 28 = 0

l(l - 7) + 4(l - 7) = 0

(l -7) (l + 4) =

l -7 =  0  {Ignore l + 4 = 0 as , it gives a negative value}

l = 7 ft

width = 7 - 3= 4

Hallar el área lateral de un cilindro que tiene de radio de la base 10 cm y de altura 5 cm.

Answers

Answer:

942.48

Step-by-step explanation:

If i can get 6 poland spring water 3-liter for $6. How much would it be if i get 3 poland water?

Explain

Answers

Answer:

$3

if we wanted to find how much 1 bottle would cost we would do 6/6=1 and from that we now know that 1 bottle of water costs $1 so if we times that by 3 to find out how much 3 bottles will cost we get $3.

I need help with this one question, please show work on paper or text, thank you

Answers

answer :243

this should be helpful

Answer Asap!
<3 <3 <3
Thx

Answers

Answer:

the answer is 15/17

because cosine=b/h=UV/UW=15/17

Is 9/12 somehow related to the fractions "4/5","3/4" and "2/3"?
State the connection or how to get 9/12 from those fractions pls

Answers

Answer:

3 / 4

Step-by-step explanation:

9 = 3 x 3

12 = 3 x 4

9 / 12

= ( 3 x 3 ) / ( 3 x 4 )

= 3 / 4

Answer:

3/4

Step-by-step explanation:

9= 3×3

12= 3×4

9/12

= (3×3) / (3×4)

= 3/4

what is the value of x?

Answers

Answer:

so x = 80

Step-by-step explanation:

Any triangle, no matter what type will add up to a total of 180, so 70+30= 100, and you now subtract that 100 from 180 and you 80

HELP PLEASE DUE IN 40 MINS!

Answers

Answer:

False

Step-by-step explanation:

AB is equal to DE not DF

AC is equal to DF not EF

Simplify this thing (4h^2/3)^3

Answers

Answer:

64h^2.

Step-by-step explanation:

4 ^3 = 64

h(2/3)^3 = h ^(3*2/3) = h^2.

4h*2/3 x 4h*2/3 meaning total answer is 8h*6/9

4. Algebra If in one year a city
recorded a total of 97 rainy days,
how many of the days did it NOT
rain? Write and solve an equation.

Answers

Answer:

268.25

Step-by-step explanation:

by using the fact that one year is 365.25 days, we can subtract our 365.25 by our 97 to get 268.25, written in the equation of 365.25-97=268.25

*edit, messed up how long a year was, corrected my issue, answer & equation.

Answer:

Step-by-step explanation:

How many did not rain is 268 because if you take away 97 from 365 ofcourse it will be 268 you’re welcome

Please help I need the answer quickly.​

Answers

Answer:

r = ± [tex]\sqrt{q^2-p^4[/tex]

Step-by-step explanation:

p² = [tex]\sqrt{q^2-r^2}[/tex] ( square both sides )

(p² )² = q² - r²

[tex]p^{4}[/tex] = q² - r² ( subtract q² from both sides )

[tex]p^{4}[/tex] - q² = - r² ( multiply through by - 1 )

q² - [tex]p^{4}[/tex] = r² ( take square root of both sides )

± [tex]\sqrt{q^2-p^4}[/tex] = r

Use the model why 522 is divisible by 9
​

Answers

Answer:

The rule for divisibility by 9 works because numbers are written in base 10.

Step-by-step explanation:

The sum of the digits is calculated as follows:

5 + 2 + 2 = 9

9 is divisible by 9, Therefore, 522 is divisible by 9

Gina places biscuits in a circular pan in the fashion shown below. What is the area of the pan not covered by a

biscuit if the diameter of each biscuit is 2 cm? Use 3.14 for pi.

A. 6.28 cm2

B. 113.04 cm2

C. 3.14 cm2

D. 21.98 cm2

E. 28.26 cm2

Answers

Answer:

that isnt the full question like what is the area of the pan and stuff

Step-by-step explanation:

PLEASE HELP I NEED THIS QUESTIONS TO PASS THE CLASS

Answers

Answer:

I : 5x + 7

M: 49x - 20

Y: [tex]x^{2}[/tex] + x + 5

P: 4x + y + 4

L: 2[tex]x^{2}[/tex] + 4x

F: -30x + 33

I: 51x - 65

PLEASE HELP!!! I need help, I don't understand please help me!!!!

Answers

Answer:

2.5

Step-by-step explanation:

Length of CB is 5

so we can take CF which is the midpoint and divide that by 2 since its split

Given that 7:3 = m:12 what is the value of m? POSSIBLE ANSWERS a) 8 b) 10 c) 16 d) 28 ​

Answers

Answer:

option d

Step-by-step explanation:

7:3 is the same as 28:12 which means that m is 28

Find the quotient: 8,441 ÷ 21 = ________. (1 point)
400 r 12
400 r 20
401 r 12
401 r 20
Pls Help ASAP!!! Thank you!!

Answers

Answer:

401 r 20

Step-by-step explanation:

It would equal to 401 r 20.

Solve:

two fifths plus seven fifteenths equals blank
Question 3 options:

thirteen fifteenths

nine fifteenths

nine twentieths

nine fifths

Answers

Answer:

[tex]\frac{13}{15}[/tex]

Step-by-step explanation:

[tex]\frac{2}{5}[/tex] + [tex]\frac{7}{15}[/tex] = [tex]\frac{2.3}{5.3}[/tex] + [tex]\frac{7}{15}[/tex] = [tex]\frac{6}{15}[/tex] + [tex]\frac{7}{15}[/tex] = [tex]\frac{13}{15}[/tex]

In the figure line m is parallel to line n if m angle 3 = (7x-10) and m angle 6=(5x+10) What are the measures of angle 3 and angle 6

Answers

Answer:

Than the other one is a good idea for the angle measured

Measures of angles 3 and 6 is 60°

What are parallel lines?

Parallel lines are those straight lines that are always the same distance apart from each other.

Given that, line m is parallel to line n and m ∠ 3 = (7x-10) and m ∠ 6=(5x+10)

Since m ║ n then

m ∠ 3 = m ∠ 6

(7x-10) = (5x+10)

2x = 20

x = 10

m ∠ 3 = 7x-10 = 7*10 - 10 = 60°

m ∠ 6 = (5x+10) = 5*10 + 10 = 60°

Hence, Measures of angles 3 and 6 is 60°

For more references on Parallel lines, click;

https://brainly.com/question/16701300

#SPJ5

a box is shaped like a cube.the box a length of 1 foot, a width of 1 foot and a height of 1 foot. what is the volume of the box

Answers

Answer:

1 ft^3

Step-by-step explanation:

Answer:

1 ft^3

Step-by-step explanation:

Volume = Length x Width x Height, so 1x1x1. For volume ft would be cubed.

You bought for hamburgers you gave the cashier $50 bill and get $22 change how much was each hamburger

!!!!!!!!5 step plan please!!!!!!!!

Answers

If you have the cashier 50 and got 22 back, each burger would be 7
$50-$22= $28
$28/4hamburgers=$7

Is 11:17 the same as 17:11

Answers

Answer:

It is a ratio, which could mean yes and no, mattering which side of the ratio the number goes to.

Step-by-step explanation:

Answer:

yes because it is the same

Please help with this

Answers

Answer:

AAA?

Step-by-step explanation

There are about 0.15 million people in Barrie, Ontario,
and 0.4 million people in London, Ontario.

a) How many more people live in London than Barrie?
b) How many times as many people live in London as in Barrie?
no links.

Answers

Answer:

a)0.11

b) 3.75

Step-by-step explanation:

a) take 4 away from 15

B) do 15 divided by 4

hope this helps bye if right mark brainlest PLEASE

If a+ b = 6 and ab = 2 find a^3 + b^3

Answers

Answer: 180

Step-by-step explanation:

This is just testing if you know the sum of cubes formula:

[tex]a^3 + b^3 = (a+b)(a^2 - ab + b^2) = (a+b)((a+b)^2 - 3ab)[/tex]

Plugging in the respective values, you get

[tex]a^3 + b^3 = (6)(6^2 - 3(2)) = \boxed{180}[/tex]

PLEASE HELP ME !! ILL MARK U BRAINIEST

Answers

hope you like my answer its 17

Other Questions
A solid oblique pyramid has a square base with edges measuring x cm. The height of the pyramid is (x 2) cm. A solid oblique pyramid has a square base with edges measuring x centimeters. The height is (x 2) centimeters. Which expression represents the volume of the pyramid? StartFraction x cubed 2 x squared Over 3 EndFraction cm3 StartFraction x squared 2 x squared Over 2 EndFraction cm3 StartFraction x cubed Over 3 EndFraction cm3 StartFraction x cubed 2 x squared Over 2 EndFraction cm3. Question is attached. Its French. Human bones make up 18% of our body mass. Jason's mass is 59.2 kg. What is the mass of his bones? What is the area of the following triangle in square meters? Do not round your answer. A = WITH THE RIGHT ANSWER WILL RECEIVE BRAINLIEST What is an example of a microorganism acting in a harmful way? Question 6 options: Bacteria infecting a cut. Bacteria aiding in digestion. Bacteria used to create yogurt. Fungi decomposing waste in a septic tank. what is a sentence A.a group of words join together to make a complete sentence B.words put in a straight line C.is made up of six or more sentence Eukaryotic chromosomes contain two general domains that relate to the degree of condensation. These two regions are ________. A. the interval [2, 4] is divided into n equal subintervals of length delta x. What is delta x (in terms of k and n) Twisting force is known as:Select one:A. thrust.B. horsepower.C. torque.D. energy. Earth is comprised of four systems, or spheres. Which of these spheres do each of the five branches of Earth Science study? Last year, wind turbines along a hilly ridge had an average output of 390 kilowatt hours peryear. The turbines were upgraded, and now their average annual output is 30% more. Whatis the new average yearly output?kilowatt hoursSubmit Why do sociologists state that race is a shifting conception? Fill in the blank with the correct conjugation of the verb in parentheses.Nosotros no _____ (comprender) ingls.comprendencomprendescomprendemoscomprende Major strokes are sometimes preceded by: solve for x, x-c=r+d/y how can i get help with my vhl spanish online homework Which war led to the US participating in an international peace conference?A. the Spanish American WarB. the Revolutionary WarC. World War ID. the Civil War No links!!!!!!!!!!! Wrong answer will be reported How can sand dunes be saved?(THIS IS SCIENCE NOT GEOGRAPHY PLEASE HELP) For f(x), evaluate the following: a. f(0), b. f(6) and show all of your work. // I've attached the function below.