Mathematics High School

3x+y=15
3x-y=15 (using elimination method)

Answers

Answer 1

Answer:

x = 5

y = 0

Step-by-step explanation:

3x + y = 15

3x -y = 15

Add the two equations;

6x = 30

Inverse operations;

6x = 30

/6        /6

x = 5

Back substitute;

3(5) + y = 15

15 + y = 15

y = 0

Answer 2

Answer:

Step-by-step explanation:

3x+y=15 3x-y=15 (using Elimination Method)

Related Questions

Someone help me with number 7 please
Brainiest answer to ever is first

Answers

Answer:

C

Step-by-step explanation:

C. Is the correct answer because the lower the layer, the older it is. For example, Sandstone is older than shale since sandstone is below shale. Since Limestone is below shale, shale is YOUNGER than limestone.

All of the following could be rewritten as an addition problem of two integers with the same sign except _____.

-9 - (-12)
-9 - 12
-12 - 9
12 - (-9)

Answers

Answer:

Answer is - 9 + 12 because they have different signs in front of each integer. (if that is what the question means)

Step-by-step explanation:

Negative sign x negative sign = positive sign

-9 - (-12) = -9 + 12

-9 - 12

-12 - 9 = -9 - 12

12 - (-9) = 12 + 9 = 9 + 12

Can somebody tell me which one it is? options are (BE, CF, DG, GF)

Answers

Answer:

CF

Step-by-step explanation:

Mark as brainliest please

Write the equation of a line (y=mx+b ) that has the following characteristics:

​ Line passes through (2,− 6) and (3,− 3)

Answers

Answer:

y = 3x - 12

Step-by-step explanation:

slope:

(-3 - (-6)) / (3 - 2)

3/1

= 3

y int = 12

Heya, could someone help me figure this out? I'm kinda stuck on this question :p​

Answers

Answer:

-0.5

Step-by-step explanation:

to understand thisyou need to know about:algebraPEMDASgiven:v=u+atu=2a=-5t=½let's solve:substitute the given values : v=2+(-5)×½v=2+(-2.5)v=-0.5

Please help will mark brainliest

Answers

-3
Hope this helps !!!!!

Answer: -3

Step-by-step explanation: Hope I helped! :D

4r + 10 = -26
What is the answer

Answers

Answer:

r = - 9

Step-by-step explanation:

Given

4r + 10 = - 26 ( subtract 10 from both sides )

4r = - 36 ( divide both sides by 4 )

r = - 9

A family of 5 drove to a concert. They paid $4 one time for parking and all of their tickets were the same price. They paid $99 total. What equation would represent this situation?

Answers

Answer:

5 + (18,8 × 5) = 99

Explaination

one ticket costs: (99$ - 5$) ÷ 5 = $18,8

Mrs. Martinez spent $15.25 buying candy for the 17 students in her G
eometry class. If m & m's cost $0.75 and Snickers
cost $1.00 how many of each did she buy?
1st step identify the variables x-m & m's y=Snickers
2nd Step Write 2 Equations x+y=17 0.75x+1.00y-15.25
3rd Step Solve the System using method of your choice SHOW ALL WORK
Xuy-y-17-y
X-17-y
Substitute 0.75(17-y) +1.00y-15.25
12.75-75y+1.00y=15.25
12.75+.25y-15.25
-12.75 -12.75
.25y-2.5
Divide by 25 y 10
Substitute x+10-17 x 7
4th step Give your answer with labels 7 m&m's 10 Snickers
For your benefit write down which problem it sends you to next.
Failure to show all steps will result in points taken off.
You will need to submit your work by taking a picture. You can submit it as a ips.pdf or a picture file. Please it costs 5% of my grade and put step by step on text or paper

Answers

Step-by-step explanation:

If the process is fair, it can be expected to happen about 12.5% of the

time. (0.5)(0.5)(0.5) = 0.125

Step-by-step explanation:

Use a model to solve nine multiplied by four sixths. Leave your answer as an improper fraction.

A. 36/6
B.13/6
C.36/54
D.13/15

Answers

all you needed to do was put 9 over one and multiply by 4/6 and you get 36/6

asap... plz can you do these for me​

Answers

Given:

The graph of a quadratic function [tex]y=x^2-4x+3[/tex].

To find:

(a) The coordinates of the turning point.

(b) The roots of the equation [tex]y=x^2-4x+3[/tex]

Solution:

(a)

From the given graph it is clear that first the graph is decreasing after that it is increasing. So, the minimum point is the turning point.

The turning is at (2,-1) because the distance between the turning point from the y-axis is 2 and from the x-axis is 1 in the downward direction.

Therefore, the coordinates of the turning point are (2,-1).

(b)

The x-intercepts are the roots of an equation because roots are the x-coordinates of the points where the graph intersect the x-axis.

From the given graph it is clear the graph intersect the x-axis at x=1 and x=3.

Therefore, the roots of the given equation are 1 and 3.

Complete the sentence by using always sometimes or never a parallelogram is a trapezoid

Answers

Answer:

Parallelogram is never a trapezoid

Step-by-step explanation:

Given

Shapes: Parallelogram and Trapezoid

Required

Compare both shapes

The properties for comparison of both shapes are:

In a parallelogram: It has 4 sides and opposite sides are parallel.

In a trapezoid: It has 4 sides, 2 of which are parallel while the other two are not.

Hence, the word that completes the sentence is never.

what is the answer?136,88,or 44?

Answers

Answer:

136

Step-by-step explanation:

10. If given 4 cups of soda, list two fractional parts that 4 could be
divided into evenly. How do you know?
1.
Fractional part:
2.
Fractional part:
3.
Explain:

Answers

Answer:

2

4

4 1/2 can be evenly divided by 4 by 1   1/8

4 1/2 can be evenly divided by 2 by 2   1/4

Step-by-step explanation:

A cylinder cooler has a diameter of 30inches and a height of 24 inches.Runners on a Marathon can use cone shaped cups to get a drink from the cooler.if the cups have a diameter Of 3 inches and a height of 4 inches,about how many full cups would be able to be filled from the cooler?Estimate useing 3.14 for pi.

Answers

Answer:

600 cups

Step-by-step explanation:

600. Cups turrrrrrrrrr

A music collection includes 19 ROCK CDs, 12 COUNTRY CDs, 6 CLASSICAL CDs, and 5 HIP HOP
CDs. What is the probability that a CD randomly selected from the collection IS a classical CD?

Answers

Answer:

6/42 = 1/7

Step-by-step explanation:

Divide the number of events by the number of possible outcomes.

necesito ayuda en algo​

Answers

En qué necesitas ayuda??
En que ? La tera ? me encantaría ayudar

Sports of the 25 baseball players on the baltimore orioles 2005 roster, 17 threw right handed, 12 were over 30 years old, and 9 both threw right handed and were over 30 years old. How many players on the team neither threw right handed nor were over 30 years old?

Answers

Answer: 5

Step-by-step explanation:

Let R be the event that players threw right-handed.

Let O be the event that players were over 30 years old.

Given: Total players = 25

n(R) = 17 ,   n(O) = 12  , n(R and O)=9

According to the probability formula,

n(R or O) = n(R)+n(O)-n(R and O)

⇒ n(R or O) =17+12-9

⇒ n(R or O) = 20

Now , n(neither R nor O) = Total - n(R or O)

= 25-20

=5

Hence, the number of players on the team neither threw right-handed nor were over 30 years old = 5

Mike took a taxi from his home to the airport. The taxi driver charged an initial fee of 6plus3 per mile. The total fare was $24, not including the tip. How many miles did Mike travel by taxi on this ride?


A 2


B 6


C 8


D 10

Answers

Answer:

6 miles.

Step-by-step explanation:

To solve this problem, lets make an equation in slope-intercept form (y = mx + b)

The initial fee is $6. This is our y-intercept (b) as it is unchanging.

Our slope (m) would be $3, as it changes value per mile, which will be represented by x.

$24 was the total fare, so this is our y.

We have:

24 = 3x + 6

Subtract 6 from both sides.

24 - 6 = 3x + 6 - 6

We get:

18 = 3x

Divide by 3 on both sides.

18/3 = 3x/3

We get:

6 = x

So, Mike traveled 6 miles.

I would appreciate brainliest, if not that's ok!

9. If a person bikes 0.24 miles in 1 minute, how far can they bike in 45 minutes?

10. A test car went 64 miles on 2 gallons in the morning, 16 miles on ½ gallon at noon, and 32 miles on 1 gallon at 5 pm. Is the relationship a proportional relationship?

please answer properly and show or tell me all your work

Answers

Answer:

9. 10.8 miles

10. Yes

Step-by-step explanation:

To solve number 9 I multipled 0.24 x 45 to find the distance the biker can bike in 45 minutes.

Number 10 is yes because the numbers continue proportionaly. If you work it out, you can see that each half gallon takes the car 16 miles. The distances went 16 miles for 1/2 gallon, 32 miles for 1 gallon, would go 48 miles for 1 1/2 gallons, and went 64 miles for 2 gallons.

Hope it helps!

7x = 7.7 help please

Answers

Answer: X=1.1

Step-by-step explanation: Have a brilliant day- Lily (^_^)

Evaluate each expression for the given value(s) of the variable(s). 2b + 9 when b = 3

Answers

Answer:

15

Step-by-step explanation:

substitute the value of the variable into the equation and simply

How many solutions does this system of equations have?

Answers

Answer:

1 solution

Step-by-step explanation:

A system of linear equations has no solution when the graphs are parallel.

What is the value of x?

Answers

Answer:

a

Step-by-step explanation:

6^2+8^2=100

sqrt of 100 = 10

Answer:

A. 10

Step-by-step explanation:

PLZ HELP QUICK 50 PTS IF U ANSWER which expression is equivalent to -12(3x-3/4)

Answers

Answer: −36x+9

Step-by-step explanation:

This is the simplified form. Still the same equation but put differently.

Are the chocolates heavier or lighter than the weight stated on the label? Answer with

h

for heavier or

l

for lighter.

Answers

Answer:

what label?

Step-by-step explanation:

Can you maybe add a picture?

Thanks

Answer:

L

Step-by-step explanation:

if the chocolate was heavier it wouldn't fit in the wrapper properly. its more likely for it to be lighter that heavier.

y=-6x-4 as integer form

Answers

Answer:

y=-24

Step-by-step explanation:

hope this will help you

How does the expression |9 -(-5)| relate to the numbers
-5 and 9 on the number line?

A) The expression shows that 9 is greater than -5.

B)The expression shows that -5 is to the left of 0
and 9 is to the right of 0 on the number line.

C) The expression represents the sum of -5 and 9.

D)The expression represents the distance between
-5 and 9 on the number line.

Answers

Answer:

to me B makes the most sense

Step-by-step explanation:

hope this helps :)

What is the value ( 1.6 x -0.25) x 4 to the second power

Answers

Answer:

2.56

Step-by-step explanation:

( 1.6 x -0.25) x 4= -1.6

(-1.6)^2 = 2.56

Which line is the graph of y= -2x+2? D B A C

Answers

the answer is b because in y=mx+c, m is the gradient and c is the y-intercept. since the y-intercept is 2, we can safely discard d as an option. when a gradient is -2, it is a negative graph which means a and c is out. so, you’re left with b!
the answer is line b
Other Questions
When checking your tires, it's most important to check their___.A.springiness and colorB.inflation and tread depth C.inflation and springiness D.brand and traction A line has a slope of -1/10and includes the points (1, -6) and (t, -5). What is the value of t? Why does the man's second fire go out?A. Several gusts of wind blow out the fire.B. Snow from the tree branches falls on it.C. The dog accidentally kicks snow on it.O D. The man loses his balance and falls on it. What is a group of people named by each state legislator to select the president and Vice President The musician Atif Aslam has agreed to visit your school for an hour and meet the students in person. Your Principal has asked you to record the preparations of his visit in the form of a report write an article on drug abuse Is the following statement true? Explain." For any two angles A and B, cos (A+B)=cos (A)+cos (B) " To determine if the bank's Web site is secure, look at the web site address.TrueFalse If Earth is the jewel in the solar system, then Saturn wears the crown. T A physicist attempts to use Newton's laws of motion to predict the behavior of a molecule of water, but the laws fail to give accurate predictions. What is the most likely reason? A) Liquids do not follow the laws of motion.B) The molecule is small enough so that quantum effects are important.C) Newtons laws apply to atoms, but not to molecules.D) The molecule was likely traveling at a near-light speed. can anyone summarize life of pi chapters 1-14 (ill mark as brainliest) please help mee with thisss JOSE ANDRES- COCINERO Y HUMANITARIO EXTRAORDINARIOHow many cities has the non-profit World Central Kitchen organization traveled to since 2010 to feed people in disaster relief andimpoverished areas around the world? Answer correctly and I will give you the brainliestThe question is:Using this evidence who do you think was the better president."Whereas Adams and his fellow Federalists, including George Washington, envisioned a strong central government and a thriving manufacturing sector centered in the cities, Jefferson and the Democratic-Republicans espoused an agrarian ideal, rooted in the republican virtues of the independent small farmer."Choose between George Washington, John Adams, and Thomas Jefferson In a laboratory experiment, two mice will be placed in a simple maze with one decision point where a mouse can turn either left (L) or right (R). When the first mouse arrives at the decision point, the direction it chooses is recorded. Then, the process is repeated for the second mouse.The tree diagram should be drawn where the first stage represents the decision made by the first mouse and the second stage represents the decision made by the second mouse.Determine all four possible decision outcomes for the two mice.Using the information from the previous problem, answer the following question.If the probability of turning left is 0.5 and the probability of turning right is 0.5 for each mouse, what is the probability that only one of the two mice will turn left?I WILL GIVE BRAINLIST IF YOU PUT THE RIGHT ANSWER BUT IF U DONT KNOW IT DO NO ANSWER OR I WILL REPORT U 5.558.55c+4.35c answer please Bob's Pet Shop sold the following pets last month:5 cats9 dogs7 birdsWhat is the ratio of birds to total pets in the simplest form? We have a 10 m resistance wire of the isachrom 60 type. The resistance of this wire is 5.65 / m at 20 C. The wire has a diameter of 0.50 mm.a. Calculate the resistivity of isachrom 60 at 20 C. Choose the missing prefix.A person who is disliked by many people is_popular.1. mis02. un3. il4. re What does 43/12 is equivalent too?