Mathematics High School

Solve each system by substitution.
y=-4x-9 y=3x+19

Answers

Answer 1

Answer:

x=-4, y=7

Step-by-step explanation:

According to the first equation, y = -4x - 9, so we can substitute y in the second equation for -4x - 9.

y = 3x + 19

-4x - 9 = 3x + 19

Add 9 to both sides

-4x = 3x + 28

Subtract 3x

-7x = 28

Divide by -7

x = -4

Plugging this into the equation, we have:

y = -4x - 9

y = -4(-4) - 9

y = 16 - 9

y = 7

Related Questions

3 fracciones propias en solo una recta

3 fracciones impropias en solo una recta​

Answers

Answer:

hola

Step-by-step explanation:

Answer:

una nana de mañana x la mañana

in anime testers it says "what is sasuke's most used jutsu" WHAT IS IY THERE ARE SO MANYYYYY

Answers

Answer:

chidori or fire ball jutsu

Step-by-step explanation:

Answer:

nice i like naruto

Step-by-step explanation:

QRST is a parallelogram. Find x, y, and z.

Answers

Answer:

x=5.4

y= 9

z= 11

Step-by-step explanation:

5x= 27

x= 5.4

2y-5=y+4

y=9

3z = 33

z =11

I’m being timed , I need help

Answers

Answer:

Step-by-step explanation:

Uh

Answer:

Time: 1, 16, 30, 40

Distance: 5/8, 10, 18 3/4, 25

Step-by-step explanation:

hope this helped

need help asap please help

Answers

X is 28 degrees, have a womderful day

56 to 56 as a Fraction in simplest form

Answers

Answer:Find the GCD (or HCF) of numerator and denominator

GCD of 56 and 100 is 4

Divide both the numerator and denominator by the GCD

56 ÷ 4

100 ÷ 4

Reduced fraction:

14

25

Therefore, 56/100 simplified to lowest terms is 14/25

Step-by-step explanation:

hope this helps have a great day

I NEED HELPPPPP ASAPPPPPPP

Answers

true

Step-by-step explanation:

it's at an equal distance

Please help! image is below

Explanation = brainliest

Answers

Answer:

x=67.5ft

Step-by-step explanation:

similarity and congruence

the length of one side of the bigger triangle divided by the length of the similar side of the smaller triangle

equate the unknown ratio with a known ratio

71.5/49.5=97.5/x

x=(97.5 x 49.5)/71.5

x=67.5 ft

Enter a number.
The measure of angle 7 is ___°
​

Answers

Answer:

151 ig

Step-by-step explanation:

vertical angles are equall

Answer:

151

Step-by-step explanation:

9-x<-11
(**hint** x cannot be negative. IF x is negative, that is like having a coefficient of -1...how would you "cancel out" that coefficient? )
Solve

Answers

Answer:

Bueno, sí y no. Si está multiplicando dos términos como (x - 2) y (x - 2), usaría el método FOIL: primero, adentro, afuera, último. Vea el diagrama adjunto. Los dos signos negativos se cancelarían entre sí solo al multiplicar los últimos valores. Avísame si necesitas más explicaciones.

-cjhunter.26

I need help with a math question. could you help me?

Answers

Answer: yrs

Step-by-step explanation: yes

Answer:

No, they aren't equal

Step-by-step explanation:

5x & 5+x

let's say x=1

5(1)=5

but 5+(1)=6

Therefore they aren't equal

Explain why parallel lines have different y intercepts

Answers

Answer:

The lines are parallel. The slopes of the lines are the same and they have different y-intercepts, so they are not the same line and they are parallel. Two non-vertical lines are perpendicular if the slope of one is the negative reciprocal of the slope of the other.

Step-by-step explanation:

Answer:

Because Y- intercept mean the part that a graph cuts at Y - axis

Step-by-step explanation:

If parallel lines cut at the same pint then they will not be parallel

Solve by the substitution method.
3x + 3y= -9
- 3x + y = 17

Answers

3x + 3(3x + 17) = -9
3x + 9x + 51 = -9
12x + 51 = -9
12x = -60
x = -5

Answer:

3x + 3y -17 =0

Explanation: im not to good at thus so thats the best i can do if thats the solution you needed

Distribute and simplify the radicals below.

Help me please I really needed it

Answers

It’s AAaaaaaaaaaaaaaaa
The answer is the first one,
−
6
√
6
−
18
√
2

Robert wants to try some new chocolate chip cookie recipes. His current recipe calls for three and a half cups of flour for every bag of chocolate chips. He wants to determine which recipes require more or less flour than his current recipe. Sort the items into the diagram below.

Answers

Please attach the diagram with your question

At Summer camp, 62 percent of the campers decide they want to go swimming instead of hiking. If there are 200 kids at the camp, how many go swimming?

Answers

Answer:

124

Step-by-step explanation:

This block of ice needs to be wrapped in a special reflective material to keep it from melting before the ice carving competition begins. How much reflective material is needed to cover the block completely, with any overlaps?




Question 5 options:

3.1 m2

1.144 m2

3.67 m2

6.7 m2

Answers

The answer is D........

Bills family is driving across the country on vacation . They plan to stop at historical sites in each state they drive through. The total mileage of the trip is 3,000 miles. They have driven 900 miles so far what percent of driving do they still have left?

Answers

Answer: Blll's family has 70% of driving left.

Step-by-step explanation:

The total mileage of the trip = 3,000 miles.

miles driven so far = 900miles

Miles of diatance left = 3000- 900=2100

Percentage of driving left =  Miles of diatance left / Total miles to cover x 100

=2100/3000 x 100

= 7/10  x100

70%

an urn contains 10 blue marbles and 8 yellow marbles a marble is drawn and dropped back into the urn. Then a second marble is drawn and dropped back into the urn both marbles are yellow if another marble is drawn. what is the probability that it will be blue

Answers

Answer:

80/729

Step-by-step explanation:

8/18x8/18x10/18=640/5832

80/729

Which integer represents this situation?

A skydiver jumped out of a plane at an elevation of 1,600 feet.

0
1,600
-1,600

Answers

Answer: 1600 feet the second answer

hope this helped! :)

Answer:1600

Step-by-step explanation:

Tell whether each equation has no solution, one solution, or infinitely many solutions.
3x-12=3x+1

Answers

There are no solutions to the equation.
Subtracting 3x from both sides gets you -12 = 1 which is never true therefore for any value of x you choose the equations will never equal each other

Name the constant in the expression:
3x + 5
please explain how I can solve problems like this

Answers

The constant is 5 because it is not being effected by the variable it is just a 5

7 + r ≥ 18
Which is true?
11
10
9

Answers

Answer:

11

Step-by-step explanation:

ez

Answer:

11

Step-by-step explanation:

The question is attached.​

Answers

Answer:

-3, uh its a short answer

I got -3
If u need the work lmk

3. A garden is going to be built in the city park in the shape of a parallelogram with a rectangular walkway
through it. The garden region is shown below. Find the area of the garden region by finding the areas of the
Individual shapes shown in the figure.
78 ft
72 ft
I
30 ft
20 ft
I’ll give BrainlyESt

Answers

Answer: i dont know the answer but find the area of each shape then add them together

Answer:

328 or 3600

Step-by-step explanation:

I'm not giving you the answer because of that profile picture, i'm not hom0phobic because I am gay myself but ships like that are the reason I left the MHA community.

A number 1 is no less than -3.

Answers

Answer:

no

Step-by-step explanation:

because 1 can equal anything

Answer:

1 equals everything

f(x) = -x² + x + 14
Find f (2)

Answers

Answer:

Step-by-step explanation:

f(2) = -2^2 + 2 + 14 = -4 + 2 + 14 = 12

Answer:

f(2) = 20

Step-by-step explanation:

f(x) = -x^2 + x + 14

f(2) = (2)^2 + (2) + 14

f(2) = 4 + 2 + 14

f(2) = 20

If you could live anywhere, where would it be?
What is your biggest fear?

Answers

Answer:

A forest and a Lion and a bear

Step-by-step explanation:

Answer:

a tropical island

Step-by-step explanation:

cuz their is farm equipment know as a

what is 3/4b>15 solution

Answers

The solution set of the given inequality is  {b| b > 20}.

How to solve the inequality?

Here we have the inequality (3/4)b > 15 and we want to solve it. To do so, we just need to isolate the variable b.

And to do it, we can work with this like we would do with any equation, we can just multipy both sides by (4/3) so we get:

(4/3)*(3/4)*b > 15*(4/3)

b > 20

Then the solution set can be written as {b| b > 20}

That is the set of all values larger than 20.

Learn more about inequalities at:

https://brainly.com/question/24372553

#SPJ1

A person dove more than 100 feet below sea level.

Which value could represent the elevation, in feet, that the person dove?
A. -125
B. -50
C.60
D.150
please help i just have 10 minutes left
dont troll

Answers

Answer:

-125

Step-by-step explanation:

sea level is zero so cant be above that and the answer has to be below -100 and the only option is -125

Answer:

A -125

Step-by-step explanation:

because they went over 100ft below sea level

and if sea level is exactly 0 and they went under it over 100 the only option over 100 with a negative sign to show they went below sea level would be -125

Other Questions
LaTeX: \frac{2}{5}\div\frac{3}{5} Which skill-related fitness component is the ability to use two or more body parts together? Joseph owns a pizza restaurant. He sells pizzas for $15 each and charges $8 for delivery. What would your total cost be if you had p pizzas delivered? With which idea from Henry Grady's statement to the New England Club in New York would Thomas Nast, the artist of "The Queen of Industry, or the New South," most likely agree?A. Industrialization will create positive social change in the South.B. The New South has created a perfect democracy.C. Wealthy oligarchs should lead popular political movements. Choose the best translation of the following sentence.I am giving him a watch.O Je lui donne une montre.O Je leur donnes une montre.Je suis donner une montre lui.Je lui donner une montre. The binomial (x+2) is a factor of ?1). 2x^{2} -5+32). x^{2} +5x+183). x^{3} +5x^{2} + 18 4). x^{3} +5x+18 A study was designed to investigate the effects of two variables (1) a student's level of mathematical anxiety and (2) teaching method on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of with a standard deviation of on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately % of the students score? While rowing across a lake, John does 3960 ft-lbs of work over 120 ft. How much force is John using? Kate lives__ the third floor. There are 9.88x1023 molecules of O2 available. a.How many moles of O2?b. How many grams of CO2 can form? What is the value of -2 1/6 -1 1/4 + 1 3/4a. -1 2/3b. -1 1/3c. 2 1/3d. 2 2/3 Students from Oak Middle School and Lake Middle School are holding a car wash to raise money for charity. The expression 70 +60 represents the amount Oak Middle School raises. Theexpression By + 30 represents the amount Lake Middle School raises. Which expression shows the total amount the two schools raise?15x90Soxy90O 7x+By9015190 Solve 3b42=c, for b. PLEASE HELP FAST!! ILL MARK AS BRAINLIEST!! write a one paragraph summary about guardians of the galaxy Scientists are unable to research the organs, tissues, and cells of early organisms as these parts are rarely fossilized. Which is one reason for the lack of these fossilized parts? Solve the expression. xy + x When x= -10 y= -5Answer choices -6040-4060 A submarine starts at 0 units and has groups of 3 floats and groups of 4 anchors attached.Using these groups of floats and anchors, write as many different expressions as you can that would make the submarine's final position -5 units.write three expressions Write an expression equivalent to m+m+m+m+m using a coefficient and a variable. 3. The main idea of paragraph 2can best be summarized as...A The soil of England is fertile.B. The enemy is man.C. The soil of England is fertileenough to support u's all if manis removed.D The land cannot provide enoughfor us and man together. Mr. Jenkins is buying paint to paint the garage wall. He needs to know the area of the wall in order to know how much paint he will need to buy. The wall is 24 feet wide and 12 feet tall. What is the area of the garage wall?