Mathematics High School

Select the correct answer.
What is the solution set of 4x = y and [tex]2x^{2} -y=0[/tex]

A.
{(0.5, -0.5), (2, -8)}

B.
{(0, 0), (2, 8)}

C.
{(1.5, 2), (8, 2)}

D.
{(-1.5, -2), (2, 8)}

Answers

Answer 1

Answer:

B.

{(0, 0), (2, 8)}

Step-by-step explanation:

Substitute 4x in for y in the second equation.  

[tex]2x^{2} - 4x = 0\\[/tex]

2x(x - 2) = 0

x = 0    or x - 2 = 0

                     x = 2

Substitute x = 0 and x = 2  in the first equation to get the corresponding values for y

4(0) = y    and 4(2) = y

y = 0     or   y = 8

So, B is the correct answer

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.

HELP PLS PLS PLS PLS

Answers

Answer:

7x - x

Step-by-step explanation:

i think so oof oof oof oof oof

The answer is 7+x*x

Gl

To any of my friends who see this, sorry I haven't been on in a while :(
PLLSSSSSSSSS HELP ASAP!
74 points+ Brainliest
Love y'all
Hint 1: Start with the triangle that is black
Hint 2: Think perimeter

Answers

The answer is 4 for the missing value

Answer:

ITS 4 BRO

Step-by-step explanation:

ALL THE TRIANGLES WILL RESULT IN 17

1+1+!1+!+!+!+!+!+!+!!!!!!!!!1111111111111

Answers

Jajajansjsjksibsbuaubainiainiiana

Answer:

1234567890987654321

Step-by-step explanation:

Choose 3 answers pls help

Answers

Answer:

B, C, and D

Step-by-step explanation:

They all have inequality signs, < or >, and the others are expressions

Help help help me please

Answers

Answer:

it's 72

Step-by-step explanation:

length x height x base

6x3x4

6x3= 18

18x4=72

Vol(Cuboid)=lbh
= 4*3*6
= 72 cm^3

HELP I WILL GIVE BRAINLIEST I PROMISE

There are 8 students on the school chess team. They need to raise at least $760 for a field trip. Their advisor says they still need to raise 85% of the funds, and she wants each of them to raise an equal share of the money still needed. Diego wrote and solved the inequality 8m + 0.85(760) ≥ 760 to find the least amount of money, m, each student on the chess team needs to raise. He says the solution is m ≥ $14.25. Diego is incorrect. What should be the correct solution? *
10 points
m ≤ $14.25
m ≥ $80.75
m ≤ $80.75

Answers

Answer:

m ≤ $14.25

Step-by-step explanation:

Answer:

m ≤ $80.75

Step-by-step explanation:

hope it helps

I need help figuring out X, i’ve been trying multiple solutions and I still don’t get what I have to do.

Answers

Answer: 5

Step-by-step explanation:

47+ 16x-4 +12x-3 =180

28x +40 =180

28x = 140

X= 5

can u guys help me this is hard and i dont understand

Answers

Answer:

Ok so this is not a function.

However i'm not real sure about domain and range because i'm not sure what you can do in those boxes but this is a guess.

Hope this helps though!:)

Domain: -3, -2, -1, 0

Range: 12, 13, 14, 15

Which graph represents the function y = 2 x - 2?
3
414
个
2
2
2
2
x
4-2
2
4
-4-2
-4
-2
-2
-2
4

Answers

The graph which represents the function; y = 2 x - 2 is the second graph from the left.

Graph of Functions

By considering the slope-intercept form of the equation of a straight line;

y = mx + c

By observation, the graph of the function has y-intercept, -2 and has slope, m = 2

The graph most comparable to the information above is the third graph and hence is the graph of the function.

Read more on graph of a function;

https://brainly.com/question/926962

Answer:

3rd one or c

Step-by-step explanation:

Evaluate the expression when x = 2 and y = 6, show all your work.

[tex]2x^{3} +3y-4[/tex]

Answers

The answer would be ~30~ because 2*2^3 = 2^4= 16 then 3*6=18 then 16+18-4=30

Hope this helps

Have a great day/night

Feel free to ask any questions

Does the graph represent a function?

Choose 1 answer:

A. Yes
B. No

Plz someone help!

Answers

the answer would be YES i’m pretty sure!

Answer:

B no it's not a function

Step-by-step explanation:

there has to be decrease and increase in the line

*Insert Halo theme song*

Answers

Answer:

halo theme is <3

Step-by-step explanation:

no reason to disagree with facts

Answer:

While there is no one Halo "theme song", "Never Forget" was a key theme in their marketing campaign.

Step-by-step explanation:

A ladder leans against a building. If the ladder reaches 18 feet up the wall and contacts the ground 5 feet from the building, what is the angle formed between the top of the ladder and the building?​

Answers

Answer:

I think it is 15 Tan^-1 (5÷18)

A construction company submitted bids for three contracts. The company estimates that it has a 20%
chance of winning any given bid. Let X represent the number of bids the company wins. Here is the
probability distribution of X along with summary statistics:

X = # of bids won-
0 1 2 3

P(X)-
0.512 0.384 0.096 0.008

Mean: µx=0.6
Standard deviation: σx=0.69

It costs the company a total of $2,000 to submit these bids, and they stand to gain $10,000 for each bid
they win. Let V represent their net gain from submitting these three bids.
What are the mean and standard deviation of V?
µv= ______dollars
σv=_______dollars

Answers

Answer: 4000 dollars

6900 dollars

Step-by-step explanation:

Can someone help me on this

Answers

Don’t you just add them? So it is 200?

Need help with finding X

Answers

Answer:

Step-by-step explanation:

Help pls (pls dont write absolute nonsense on here pls i really need help)

Answers

A) -2fg b) not sure sorry c) f-x

If the density of a piece of wood is 0.85 g/cm3, what is the volume if the mass of 24.99 cm3?

Answers

Answer:

to find volume

Step-by-step explanation:

I think so it is like this 24.99/0.85 =29.4

I need the solution. Please give steps
y = 10x + 20
y = 20x + 10

Answers

Answer:

If your trying to answer for X, here is how you do it.

For the equation '' Y = 10x + 20 '', isolate the variable 'X' by dividing each side by factors that don't contain the variable 'X', to get your answer:

X =  Y/10 − 2

Or

X = [tex]\frac{Y}{10}[/tex] − 2

For the other equation " Y = 20x + 10 ", it's the exact same thing. Isolate the variable 'X' by dividing each side by factors that don't contain the variable 'X', to get your answer:

X = Y/20 − 1/2

Or

X = [tex]\frac{Y}{20}[/tex] − [tex]\frac{1}{2}[/tex]

Id.k uhhhh

X = 30?

wee e wee e we

I dont got steps sorry :v

Mel cleans houses. She earns $7.50 every hour she dusts. She earns $10.00 every hour that
she scrubs floors. She scrubbed floors for 1.5 hours and dusted for 2 hours. How much money
did Mel earn?

Answers

Scrubbing the floor=15:00$
Dusting=15:00$
Total:30:00$

How do you do this C=2πr with π=3.14?

Answers

Answer: C=2*3.14*r

Step-by-step explanation:

You just plug in 3.14 for pi, it's pretty simple


7. 8x - 4= 4(2x + 1) have how many solutions

Answers

Answer:

0

Step-by-step explanation:

Let's solve for x

8x-4=4(2x+1)

8x-4=8x+4

0= 8

This obviously isn't true and therefore there are 0 solution

Answer:

No solution as both side not equal.

What is the surface area of this rectangular pyramid?
8.1 cm
9.3 am
12 cm
5 cm

Answers

Lolol sameee ^^^^^^^^

Math Help Me Please!!! Thank you

Answers

Answer:

B: Linear

Step-by-step explanation:

Linear can be all different patterns including inconsistent patters as you see on the screen.

Linear can also be provided in algebra.

Dots A: 5

Dots B:  7

hi can anyone tell me the answer

Answers

Answer:

Attached a pic!!

Hope it helps!!!!

i am thinking of two numbers. the first number is three more than the second number. the sum of the numbers is seven. Find the two numbers.

Please work everything out! Thank you

Answers

Answer:

2 and 5

Step-by-step explanation:

5 + 2 = 7

5- 2= 3

Anyone know the answer for this

Answers

Answer:

D is the answer.

8×2×3×6×5×4

Mark took his family to the movies and spent a total of 78$ on tickets he also bought a soda for each family member each sodas cost 4.25 if mark spent a total of 102,50 on sodas and tickets. How much sodas did he buy

Answers

Answer: He bought about 6 sodas.

Step-by-step explanation:

Given: Tota cost of tickets = $ 78

Cost of each soda = $4.25

Total cost of sodas and tickets = 102.50

Let x = Number of sodas purchased

Then

[tex]78+4.25x=102.50\\\\\Rightarrow\ 4.25x=102.50-78\\\\\Rightarrow\ 4.25x=24.5\\\\\Rightarrow\ x= \dfrac{24.5}{4.25}\\\\\Rightarrow\ x\approx6[/tex]

Hence, he bought about 6 sodas.

Dave places £17000 in an account which pays 4% compound interest per year. How many
years will it take before he has £19122.69 in the bank?

Answers

Answer:

3 years

Step-by-step explanation:

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