The screen shot is in the file.... PLEASE HELPPP

The Screen Shot Is In The File.... PLEASE HELPPP

Answers

Answer 1

Answer:

Option A: Madison, (1.2,-1.6) is the correct answer.

Step-by-step explanation:

Observing Madison's solution it can be seen that he has used elimination method to solve the system. If elimination method has to be used the first equation has to be multiplied by 4

[tex]4(2x-y) = 4(4)\\8x-4y = 16[/tex]

While Madison has made mistake with sign of one term in equation 1 (he has written -8x instead of 8x)

So Madison's solution is wrong.

Tyler has used the substitution method to solve the system of equations and has done it correctly (Calculated value of y in terms of x from equation 1 and substituted in equation 2)

The value of x=1.2 is correct, we have to find the value of y

So,

Putting the value of x=1.2 we get,

[tex]y=2x-4\\y = 2(1.2)-4\\y = 2.4-4\\y= -1.6[/tex]

The solution of given system of equations is (1.2,-1.6)

Hence,

Option A: Madison, (1.2,-1.6) is the correct answer.


Related Questions

Which graph has a slope of 4/5 ?

Answers

Answer:

quadratic

Step-by-step explanation:

maybe you can try searching in google

it is a quadratic graph

Part 5

I have done some of these but I feel unthanked I am going to continue to give pts. These points are for the females because they are strong and smart and good. We men deserve more women like you all. please take these pts. <3

Answers

Haha

I appreciate it I guess.

Help pls it would be much appreciated need it asap

Answers

Answer:

( 6, -3 )

Step-by-step explanation:

Is 0.07 equal to 0
.007

Answers

Answer:

no

Step-by-step explanation:

Answer:

no its not

Step-by-step explanation:

PLEASE HELP FAST ILL GIVE BRAINLIEST

Answers

Answer:

x=12

Step-by-step explanation:

have a good day!

Here is a diagram that describes the cups of green and white paint in a mixture. Select ALL the statements that accurately describe this diagram.

Answers

Answer:that’s the answer enjoy

Step-by-step explanation:

30. The table below shows the average temperature of a lake in months since April in a certain year. Find
the equation for the curve of best fit using a quadratic model, then predict the average temperature of
the lake during December of the same year. Round all answers to the nearest hundredth.
Month
Temp (°F)
April
59
May
68
June
71
July
78
August
74
1

Answers

Answer:

The temperature, in December is 47 °F

Step-by-step explanation:

The given data for the temperature are;

Month             [tex]{}[/tex]         Temp (°F)

April                   [tex]{}[/tex]          59

May               [tex]{}[/tex]               68

June             [tex]{}[/tex]                71

July                  [tex]{}[/tex]             78

August              [tex]{}[/tex]            74

Let x represent the month, and f(x) = y represent the temperature, we have;

y = a·x² + b·x + c

When x = 1, we have, f(1) = a·1² + b·1 + c = 59

f(1) = a + b + c = 59...(1)

When x = 2, we have, f(2) = a·2² + b·2 + c = 68

f(2) = 4·a + 2·b + c = 68...(2)

When x = 3, we have, f(3) = a·3² + b·3 + c = 71

f(3) = 9·a + 3·b + c = 71...(3)

When x = 4, we have, f(4) = a·4² + b·4 + c = 78

f(3) = 16·a + 4·b + c = 78...(4)

When x = 5, we have, f(5) = a·5² + b·5 + c = 74

f(3) = 25·a + 5·b + c = 74...(5)

Subtracting equation (3) from equation (5), we get;

25·a + 5·b + c - (9·a + 3·b + c) = 74 - 71

16·a + 2·b = 3...(6)

Subtracting equation (1) from equation (2), we get;

4·a + 2·b + c - (a + b + c) = 68 - 59

3·a + b = 9...(7)

Multiply equation (7) by 2 and substract from equation (6) gives;

16·a + 2·b - 2 × (3·a + b) = 3 - 2 × 9

16·a + 2·b - 6·a - 2·b = 3 - 2 × 9

16·a - 6·a + 2·b  - 2·b = 3 - 2 × 9 = -15

10·a = -15

a = -15/10 = -1.5

a = -1.5

From, 3·a + b = 9, we have;

3 × (-1.5) + b = 9

b = 9 + 4.5 =13.5

b = 13.5

From, a + b + c = 59, we have;

-1.5 + 13.5 + c = 59

c = 59 - (-1.5 + 13.5) = 47

c = 47

The quadratic equation becomes, y = a·x² + b·x + c = -1.5·x² + 13.5·x + 47

f(x) = y = -1.5·x² + 13.5·x + 47

For December, we have, x = 9, and f(x) = -1.5×9² + 13.5×9 + 47 = 47

The temperature, in December = 47 °F

Sunny made 2 pitchers of strawberry smoothies for the science club. If each person got One-fifth of a pitcher, how many science club members are there?

2 area models. Both models are made up of 5 shaded parts.

Which statements are true?Check all that apply.
The correct division problem is One-fifth divided by 2.
The correct division problem is 2 divided by one-fifth.
The quotient isStartFraction 1 Over 10 EndFraction.
The quotient is 10.
There are 10 members in the science club.
There are StartFraction 1 Over 10 EndFraction members in the science club.

Answers

Answer:

Answer:

The anwser is 2

Step-by-step explanation:

1 for each person

Answer:

The answers are B, D, and E.

Step-by-step explanation:

After I got it wrong the first two times on edge, It showed me the answer.

Have a good morning/afternoon/evening!

HELPPPPP HURRYYYYYY FASTTTT

Answers

Answer:

A.

Step-by-step explanation:

A slope is 2

B slope is -1/2

hope this helps :3

if it did pls mark brainliest


Pls answer I’ll give you brainly



Answers

Answer:

D

Step-by-step explanation:

can you help me with this​

Answers

Answer:

0.4375

Step-by-step explanation:

All you do is divide the 12 and 1/4 by 28!

Answer:

its answer is 0.4375...

determine the slope of the line that contains (-4,2) and (6,8)​

Answers

The slope of this line would be change in y divided by change in x. (8-2)/(6–4) = 6/10. In simplified terms, it would be a slope of 3/5.

A teacher wrote this expression on the board (-6)(2)+(-8+4)

Answers

Answer:

The answer is -16

Step-by-step explanation:

Answer= -16 the work is in the picture if you wanna screenshot it or something

find the value of x pls help

Answers

Answer: 90 degrees

Step-by-step explanation:

It is a right angle which means it is 90 degrees. Plz mark me brainliest

plz help asap!!!!!!!​

Answers

Answer:

A

move the numbers around and you'll get it

−9.76d − (−12.81d) = 8.54

Answers

Answer:

d = 2.8

Step-by-step explanation:

−9.76d − (−12.81d) = 8.54

~Simplify

−9.76d + 12.81d = 8.54

~Combine like terms

3.05d = 8.54

~Divide 3.05 to both sides

d = 2.8

Best of Luck!

what is the slope of y = -x + 7

Answers

The slope of this equation would be m = -1

Answer:

slope m = - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - x + 7 ← is in slope- intercept form

with slope m = - 1

Round 837.6186 to the nearest hundredth. Enter your answer in the space
provided

Answers

Answer:

837.62

Step-by-step explanation:

Two decimal places to the right of the decimal is the hundredths place. When we round, we use the number after it to determine the number. 8 is greater than 5, so the 1 after the 6 will turn into a 2.

A ticket to see your favorite baseball team costs ​$43.76. That price decreases by ​$0.33 for every game lost during the regular season. What equation could you use to find the cost C of a ticket after L​ losses? Represent the total change in the cost of a ticket after the team loses games. What is the price of a ticket after the team loses ​games?

Answers

Answer:

C=$0.33L-$43.76

I hope this is good enough:

The original Ferris wheel, designed by George Ferris in 1892 for the World’s Columbian Exposition in Chicago, had a radius of 125 feet. What was the circumference of the original Ferris wheel?

Answers

Answer:

Step-by-step explanation:

The answer is 250 pi

Answer:

r

Step-by-step explanation:

Approximately how long will it take for $700 to double if it is invested at 4% annual
interest, compounded continuously?
Round your final answer to the nearest whole year and do not label units.

Answers

Answer: 17 years

Step-by-step explanation:

Exponential equation for compund amount( compunded continuously):

[tex]A=Pe^{rt}[/tex] , where P= Principal value , r= rate of interest , t= time.

Given: A= 2P

r =4%= 0.04

To find : t

Substitute all values in the formula , we get

[tex]2P=Pe^{0.04t}\\\\\Rightarrow\ 2=e^{0.04t}[/tex]

Taking natural log on both sides

[tex]\ln2=\ln e^{0.04t }\\\\\Rightarrow\ 0.693147=0.04t\\\\\Rightarrow\ t=\dfrac{ 0.693147}{0.04}\\\\\Rightarrow\ t=17.3286\approx17[/tex]

hence, it will take 17 years (approx).

iv) You have 10 gallons of lemonade to sell (1 gallon = 3785 cm3). Each customer
uses one paper cup. How many paper cups will you need?

Answers

Answer:

I'd need to know the size of each paper cup

Answer:

205

Step-by-step explanation:

Q1.is the given value of the variable , s, a solution to the inequality?s > -2.25; s = -2.21.yes 2.no
Q2.which value of the variable is a solution of the inequality?t > -7
1. -9
2. -8
3. -7
4. -6

Answers

Answer:

- 6

Step-by-step explanation:

;)

What is the solution to 2(x-4)=16

Answers

Answer:

x=12

Step-by-step explanation:

help T^T ion wanna fail this class

Answers

‘ you subtract 103-3=100 , then divide 100/10 =10 .. 10 is your answer

Which of the following best defines an output? (4 points)


An output is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph.


An output is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.


An output is a special type of relation for which there is a rule that pairs each input with exactly one output.


An output is a set of ordered pairs in which no y-value repeats.

Answers

Answer:

An output is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.

Usually, output refers to the dependent value of a function rule.

It is also correct that the y coordinate of ordered pairs, graphed points, and in a function table.

Answer:

An output is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph best disfines an output because an input can have multiple outputs like

x   y

4   5

3   5

6   5

but a function cannot have the same input with different outputs like

this example shows what is not a function

x    y

3    5

3     6

4    79

4    64

 this is not a function

Step-by-step explanation:

This graph shows the rate of a scuba diver’s ascent to the surface. What does the y-intercept of the graph represent?

Answers

Answer: The scuba diver was 35 meters below the surface of the water at the start of the ascent.

Step-by-step explanation:

Please I Am Begging You Give Me An ActuaL Answer
y(t) = distance of weight from equilibrium position

ω= angular frequency (measured in radians per second)

A = amplitude

Ø= phase (depends on initial conditions)

c1 = A sin

c2 = A cos


Prove that: Asin(ωt+Ø)=c2sinωt+c1cosωt


Note: c1 and c2 are actually with the number slightly below the letter, if that makes sense. It wouldn't let me type it that way. Anyway, if anyone can help I would really appreciate it! Thank you!

Answers

Step-by-step explanation:

An object moving along the x-axis is said to exhibit simple harmonic motion if its position as a function of time varies as

x(t) = x0 + A cos(ωt + φ).

The object oscillates about the equilibrium position x0.  If we choose the origin of our coordinate system such that x0 = 0, then the displacement x from the equilibrium position as a function of time is given by

x(t) = A cos(ωt + φ).

A is the amplitude of the oscillation, i.e. the maximum displacement of the object from equilibrium, either in the positive or negative x-direction.  Simple harmonic motion is repetitive.  The period T is the time it takes the object to complete one oscillation and return to the starting position.  The angular frequency ω is given by ω = 2π/T.  The angular frequency is measured in radians per second.  The inverse of the period is the frequency f = 1/T.  The frequency f = 1/T = ω/2π of the motion gives the number of complete oscillations per unit time.  It is measured in units of Hertz, (1 Hz = 1/s).

The velocity of the object as a function of time is given by

v(t) = dx(t)/dt = -ω A sin(ωt + φ),

and the acceleration is given by

a(t) = dv(t)/dt = -ω2A cos(ωt + φ) = -ω2x.

the fair has a total of 90 rides. 30% of the rides are considered kiddie rides. How many of the fair rides Are not kiddie rides?

Answers

It would be 60 wouldn't it?

Answer:

63

Step-by-step explanation:

70 percent aren't so multiply 90 by 7/10

Which situation represents an example of a non-proportional relationship?
A. A restaurant charges $1.75 for each soft drink.
B. A cell phone company charges customers 10 cents per text sent or received.
C. A gym charges a membership fee of $50, plus a monthly charge of $20 per month.
D. A dog walker charges $10 to walk one dog for 30 minutes.

Answers

I think it is c.

So a non-proportional relationship is basically a line that does not cross the origin of a graph. So using the linear exhaustion of a line, y=mx+b, a PROPORTIONAL RELATIONSHIP would be something along the lines of y=mx+0 because b, which is the w intercept is 0. If the y intercept is 0 then the line will cross the origin of the graph. So with this being said a NO -PROPORTIONAL RELATIONSHIP would be anything that has a b value besides 0, because then the line would cross at a y intercept besides the origin.

So with this being said the equation of a line for:
a) would be y=1.75x (because it is only charging per drink, and nothing else, there is no b value or y intercept). This means this is a PROPORTIONAL RELATIONSHIP, crossing the origin (THIS IS NOT THE ANSWER)
b) would be y=0.10x (because it is only charging per amount of texts, and nothing else, there is agin no b value, so the y intercept is 0, crossing the origin). (THIS IS ALSO NOT THE ANSWER)

C) would be y=20x+50 (x is the number of months, which then determine the amount of money you spend at the gym based on how many months you go there. Plus, you have to add in the cost of the gym membership as well, being 50$. So, in this case because 50 is being added to the 20x, the b value or y intercept would be 50. This WOULD NOT cross the origin because the intercept is not 0, as a result THIS IS YOUR ANSWER)!

d)(this one I don’t exactly know how to explain... but I don’t think you can really make a proper linear equation because it is dealing with time (30min) but also money (10 for one dog). In this case you would have to have a variable for the number of dogs and the amount of time your dog(s) are walked (30 min). So in this case, the equation y=10x+30z (let’s say d is the number of dogs and s is the number of 30 min increments), The equation would not make sense because you are working with two different things... time and money in the same equation. You cannot add the 30minutes plus 10$ because that is combining two different units. So with this, I don’t think this is the answer. (I’m sorry about this one, I don’t know for sure if this is the right explanation for this or not, but I don’t think this is the correct option. I think c would be)!


I hope this helps!!! :)
Good luck!

Option c is the correct answer. A gym charges a membership fee of $50, plus a monthly charge of $20 per month.

What is a proportional relationship?

Relationships between two variables that are proportional occur when their ratios are equal. Another way to consider them is that in a proportionate relationship, one variable is consistently equal to the other's constant value. That constant is known as the "constant of proportionality".

So a non-proportional relationship is basically a line that does not cross the origin of a graph. So using the linear exhaustion of a line, y=mx+b, a proportional relationship would be something along the lines of y=mx+0 because b, which is the w intercept is 0. I

Having said that, here is the equation for a line:

a) would be y=1.75x (because it is only charging per drink, and nothing else, there is no b value or y-intercept). This means this is a

b) would be y=0.10x (because it is only charging per amount of texts, and nothing else, there is again no b value, so the y-intercept is 0, crossing the origin). (THIS IS ALSO NOT THE ANSWER)

c) y=20x+50 (x is the number of months, which then determine the amount of money you spend at the gym based on how many months you go there. Plus, you have to add in the cost of the gym membership as well, being 50$. So, in this case, because 50 is being added to the 20x, the b value or y-intercept would be 50.

To know more about proportional relationships follow

https://brainly.com/question/28777033

#SPJ2

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