IM NOT SMART SUBSTITUTION METHOD AGAIN

IM NOT SMART SUBSTITUTION METHOD AGAIN

Answers

Answer 1

Answer:

x = 6

y = -3

Step-by-step explanation:

15x + 31y = -3

we are given that x =( - y + 3 )

so in the equation 15x + 31y = -3 we substitute "x" for ( -y + 3 ) and we solve for y

so 15 ( -y + 3 ) + 31y = -3

now we use basic algebra to solve for y

step 1 distribute the 15

15 * -y = -15y

15 * 3 = 45

now we have 45 - 15y + 31y = -3

step 2 combine like terms

-15 + 31y = 16y

now we have 45 + 16y = -3

step 3 subtract 45 from each side  

-3 - 45 = -48

45 - 45 cancels out

now we have 16y = -48

step 4 divide each side by 16

16y/16=y

-48/16=-3

we're left with y = -3

Now to find x we substitute -3 for y in x  = -y + 3

* substitute *

x = - ( -3) + 3

the two negative signs cancel out and we get x = 3 + 3

3 + 3 = 6

we're left with x = 6  


Related Questions

I NEED HELP I NEED TO PASS THIS

Answers

Answer:

A. the area of the large pond is 16 times the area of the small pond

Step-by-step explanation:

let's say 4 is the radius of the small circle, which means the area is 50.26548

if the large circle is 4 times the small circle, that means it's radius is 16 which means the area is 804.24772

so if you divide the big circle area by the small circle area:

804.24772/50.26548

it gives you 16.00000079577 which is rounded to 16

therefore, the bigger circle is 16 times bigger than the smaller circle

Which ordered pair describes a point that is located 4 units to the left of the origin and 2 units below the x-axis?

Answers

Answer:

(-4,2)

Step-by-step explanation:

The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.

The ordered pair that describes a point that is located 4 units to the left of the origin and 2 units below the x-axis is (-4, -2)

What are coordinates in a graph?

The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.

The coordinates in a graph show the relationship between the information plotted on the given x-axis and y-axis.

We have,

The point is located 4 units to the left of the origin and 2 units below the

x-axis.

4 units to the left of the origin.

This means,

x = -4

2 units below the x-axis.

This means,

y = -2

The coordinate in the form of ordered pair is (-4, -2).

Thus,

The ordered pair that describes a point that is located 4 units to the left of the origin and 2 units below the x-axis is (-4, -2)

Learn more about coordinates here:

https://brainly.com/question/13118993

#SPJ5

Please show how you got the answer.​

Answers

Answer:

cosA = 8/17

Step-by-step explanation:

cos =  adjacent/hypotenuse

The number that is adjacent to angle A is 24 and the hypotenuse is 51

Plug the numbers into the cosine equation, which would look like:

Cos A = 24/51

You can simplify the fraction by dividing it by 3

So Cos A = 8/17 or 0.89130173...

The first person that answered is correct

30 POINTS!!! PLEASE ANSWER THE QUESTIONS IN THE PICTURES!!! EACH QUESTION HAS 2 ANSWERS!!!!

Answers

Answer:

Step-by-step explanation:

I believe the first question is 1.9

second: 48.2

sorry didn't understand the third one :(

good luck in your exam!

Please help I need to show all work

Answers

Answer: x=-3 can you mark me brainlyest thanks

Step-by-step explanation:

3(x-6)=2x(x+3)

3x-18=3x+6x

3x-18=9x

-3x      -3x

-18=6x

__   __

6      6

x=-3

Answer: X = -13 answers above btw

jane leaves her bicycle at 8:00 AM, traveling at an average speed of 15mph. her brother frank leaves home in his car at 10:30 AM, traveling the same route as Jane at an average speed of 40 mph. at what time will they meet? i will give brainliest

Answers

Answer: 11:00

Step-by-step explanation:

Answer: 11:00

Step-by-step explanation:

I took a pic I hope that's fine​

Answers

Answer:

20/35

Step-by-step explanation:

The framed wall art Modern is 20 and the total is 35  so unless you have to simplify this should be the answer

Find the mean of the following data set
41,7, 39, 11, 23, 31, 27, 7, 12
0 29
0 198
0 99
022

Answers

Answer:

22

Step-by-step explanation:

Add al the digits (198) then divide by how many digits there are (9)

198÷9=22

A line is perpendicular to y = 3x - 8 and
intersects the point (6, 1).
Write the equation in slope-intercept form.

Answers

Answer:

Step-by-step explanation:

a line perpendicular to the give formula has a reciprocal slope and it's sign is changed also.

then m = -1/3 for our perpendicular line

y - 1 = -1/3(x -6)

y -1 = -1/3x + 2

y = -1/3x +3

there you go  :)

100 points!
At what point(s) do these graphs intersect? y=x^2 = 3x-5
y=4x+1
Seth’s solution:
y=x^2 +3x-5
y=4x+1
x^2 =3x-5=4x+1
x^2 -x-6=0
(x-3)(x+2)=0
x=3 and x=-2
The graphs intersect at (-2,0) and (3,0).
Is Seth's solution correct? Explain.

Answers

Answer:

Solution is correct till finding the roots:

x = 3, x = -2

Then Seth should find the respective y- points using either equation:

y = 4*3 + 1 = 13

and

y = -2*4 + 1 = -7

Correct solution is:

(3, 13) and (-2, -7)

Answer:

Seth's answer is incorrect.

Step-by-step explanation:

He is correct with all of his steps until he reaches the roots... the correct roots are, y = 4(3) + 1 = 13 y = 4(-2) + 1 = -7

So the correct answer would actually be: The graphs intersect at the coordinates (3,13) and (-2,-7)

On Saturday, Kiana studied 2 ¼ hours for her college exams. She spent ¾ hour studying for each of her exams. How many exams did Kiana study for?

Answers

Answer:

3 exams

Step-by-step explanation:

[tex]2 \times \frac{1}{4} = \frac{9}{4} [/tex]

[tex] \frac{9}{4} \div 34 = \frac{3}{1} [/tex]

3/1 = 3

A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.

The formula for dividing fractions.

= a/b ÷ c/d

= ad/bc

The number of subjects studied for the exam is 3 subjects

What is a fraction?

A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.

Example: 1/2, 1/3 is a fraction.

We have,

On Saturday:

The number of hours Kiana studied = 2 ¼ hours

This can be written as,

= 2 (1/4)

= 9/4 hours _____(A)

The number of hours studied for each subject.

= ¾ hour ______(B)

The formula for dividing fractions.

= a/b ÷ c/d

= ad/bc

Now,

From (A) and (B) we get,

The number of subjects.

= 9/4 ÷ 3/4

= (9 x 4) / (4 x 3)

= 3 subjects

Thus,

The number of subjects studied for the exam is 3 subjects

Learn more about fractions here:

https://brainly.com/question/24370499

#SPJ5

The time between arrivals of small aircraft at a county airport is exponentially distributed with a mean of one hour. (a) What is the probability that more than three aircraft arrive within an hour? (b) If 30 separate one-hour intervals are chosen, what is the probability that no interval contains more than three arrivals?(c) Determine the length of an interval of time (in hours) such that the probability that no arrivals occur during the interval is 0.10.

Answers

Answer:

(a) The probability that more than three arrive in one hour is approximately 0.018988

(b) The probability that no interval contains more than 3 arrivals in 30 separate one-hour intervals is approximately 0.56264

(c) The length of time such that the probability of no arrival is 0.1 is approximately 2.30259 hours

Step-by-step explanation:

The distribution of the arrival time of a small aircraft = Exponential distribution

The mean arrival time, μ = 1 hour

The pdf of a exponential distribution, f(x) = λ·e^(-λ·x)

The mean, μ = 1/λ

∴ 1 = 1/λ

λ = 1 hour

∴ For the exponential distribution, f(x) = 1·e^(-x)

(a) The Poisson probability is given as follows;

[tex]P(X = k) = \dfrac{\lambda^k \times e^{-k}}{k!}[/tex]

The probability for more than 3 is given as follows;

[tex]P(X > 3) = 1 - \dfrac{1^0 \times e^{-1}}{0!} - \dfrac{1^1 \times e^{-1}}{1!} - \dfrac{1^2 \times e^{-1}}{2!} - \dfrac{1^3 \times e^{-1}}{3!} \approx 0.018988[/tex]

(b) P(X ≤ 3) for 30 1 hour intervals = P(X ≤ 3)³⁰ = (1 - 0.018988)³⁰ ≈ 0.56264

(c) When the probability that no arrival occurs is 0.1, we have;

0.1 P(X > x) = f(x) = 1·e^(-x) = e^(-x)

-x·ln(e) = ln(0.1)

∴ x = -㏑(0.1) ≈ 2.30259

The length of time such that the probability that no arrival occur during the interval is 0.1, x ≈ 2.30259 hours.

Once simplified, which of the expressions below is equal to 2x+8? Select all that apply.
A) 4(2x+8)
B) 2(x+4)
C) 3(3x+5)−7x–7
D) 6x–4–4x+4

Answers

Answer: B) 2(x+4)

Step-by-step explanation: Hope this help :D

Whoever answers correctly without adding NO FILES OR LINKS gets brainliest

Answers

Answer:

D

Step-by-step explanation:

because i see it xD but like > 15 mean you going to the left soooo and u got to satrt at 15

Aiden borrows a book from a public library. He read a few pages on day one. On day two, he reads twice the number of pages than he read on day one. On the third day, he reads six pages less than he reads on the first day. If he has read the entire book that contains 458 pages, how many pages did he read on day three?

Answers

Answer:

.

Step-by-step explanation:

can someone please help me​

Answers

Answer:

a ≤ −4 or a ≥ 8

Step-by-step explanation:

Hope This Helps!

Help
Write an equation in slope-intercept form of the line that passes through the given points.

Answers

Answer:

y = 1/2x+1

Step-by-step explanation:

Slope = Δy/Δx

The difference is y increases by 1 and difference in x increases by 2. So the slope is 1/2.

Slope-intercept form: y=mx+b

We take point (0,1) and input into this equation.

1= 1/2×0 +b

1 = b

Resuelve la siguiente operacion con su proceso: 3 x( 2 + 4 x 3 ) - 2 x( 3 x 2 - 2 x 2 )+ 5 - 2= Es urgente!

Answers

Answer:

41

Step-by-step explanation:

Usando BODMAS, entonces que tenemos

(2 + 4 * 3) =

(2 + 12) =

14

Con el segundo uno, tenemos

(3 * 2 - 2 * 2). Con esto, dices que

(3 * 2) - (2 * 2) =

6 - 4 =

2

Y ahora, decimos que

3 * (14) - 2(2) + 5 - 2 =

42 - 4 + 3 =

42 - 1 = 41

Nos respuesta a la pregunta es 41. Espero que tú entiendas

HI! please help out ASAP this is due today! Explain it the best you can and send a picture explaining it so I won’t get confused. Thank u!

Answers

points are

(0,-1)
(3,-2)
(1,-4)

i need help with this​

Answers

Answer:

1) 0.04, 3.6

2) 0.35, 49

Step-by-step explanation:

Answer:

1. 90x0.04= 3.6

2. 140x0.35=49

Step-by-step explanation:

convert to decimal to calculate the percent.

helpp?!?please i will give you cookie

Answers

Hope it helps you! ........

Given the data set below, the median of the data set is . 11, 17, 6, 12, 3

Answers

the median would be 9.8

What is the solution to the inequality (21+5) >1?

Answers

Answer:

True

Step-by-step explanation:

(21+5) >1

Simplify 21+5

26>1

Therefore the solution is

True

Helped by none other than the #Queen herself #DRIPPQUEENMO

Simply the following: 3a x 2a x 4b

Answers

Answer:

24a²b

Step-by-step explanation:

Answer:

24a^2b

Step-by-step explanation:

3a*2a*4b

6a^2*4b

24a^2b

What is the answer to 8x<6? Please help

Answers

Answer:

x<3/4

Step-by-step explanation:

8x<6

x<6/8

x<3/4

I hope this helps

Answer:

x = 3/4

Step-by-step explanation:

GUYS PLEASE HELP!!A gardener plans to construct a triangular garden using logs for the edges. She has logs that measure
5 meters and 3 meters. Which of the following lengths could be used for the third side of the garden?
A 2 meters
B 6meters
C 8meters
D 9meters

Answers

Answer:

6 meters

Step-by-step explanation:

The sum of the lengths of any two sides of a triangle is always greater than the length of the third side. And this MUST be true for all the combinations

The only length where this is true is 6

3+5 is greater than 6

2+6 is greater than 5

5+6 is greater than 3

A trapezoid has a height of 3 meters, a base length of 8 meters, and an area of 30 square meters. What is the length of the base?

Answers

Answer:

Length of the second base will be 12 meters.

Step-by-step explanation:

Area of a trapezoid is given by the formula,

Area = [tex]\frac{1}{2}(b_1+b_2)h[/tex]

Here, b₁ and b₂ are the bases of the trapezoid and 'h' is the vertical distance between the bases.

By substituting the values in the formula,

[tex]30=\frac{1}{2}(8+b_2)3[/tex]

[tex]60=3(8+b_2)[/tex]

[tex]20=8+b_2[/tex]

[tex]b_2=12[/tex]

Therefore, length of the second base will be 12 meters.

The volume of sphere Q is 50% more than the volume of sphere P. The volume of sphere R is 50% more than the volume of sphere Q. Find the volume of sphere P as a fraction of sphere R. Write your answer in the form a/b

Answers

Use this link to find your answerhttp://ldh.la.gov/

Help me pls. Which decimal is less than 0.8?

Answers

Answer: 0.79

Step-by-step explanation: for example 79 is less than 80.

Steven's Diner sold 60 milkshakes last week. ​25% of the milkshakes had whipped cream on top. ​ How many milkshakes with whipped cream were sold?

Answers

Answer:

the answer is 15.

Step-by-step explanation:

you find the answer by turning 25% into 0.25 then you multiple it by 60, this results in 15.

Other Questions
i will give brainiest 1!!!!!!! What is x(5-2)(2-2)=12 The school bookstore ordered three-ring notebooks. They put 75% of the order in the warehouse and sold 0% of the rest in the first week of school. There are 25 notebooks left in the store to sell. How many three-ring notebooks did they originally order? Show and explain your answer. The volume of the cube shown is 125 cubic centimeters. Which must be the value of n? Grammar - Complete the first blank with the correct verb. Yes, some are used more than once.(Will BRAINLIST if correct, will report if scam). please help im kinda stressed right now. Easy brainPlease help Try These questions out and Ill give you brainliest no links posted on My question or I will report you A composite shape consists of a square with a semicircle sitting on top of it. The dimension of the square (which isalso the dimension on the half circle) is 20 yards. What is the area of this composite shape? 76 is what percent of 475? Riley purchased a 30-day International cell phone plan for use during winter break. There is a one-time fee of $35 and it includes 150 MB of data usage. Each extra megabyte,or part thereof, of data costs $0.28. Find the cost of the plan if he uses 388 MB of data during the trip. Do you think it is the responsibility of the US to help other nations fight off communism? Why or why not? Which of the following exponential functions represents the graph below? what asian dragon moved to the core? What is the pigment that absorbs light energy and make glucose? In Amish populations, we see a much higher amount of a specific type of dwarfism compared to the rest of the human population. Which term is best applies to this situation?Both of theseGenetic DriftFounder EffectNone of these The highlighted region on the map most likely features which type of climate?A. TemperateB. PolarC. HighlandD. Tropical y=6x^2-12x-1 minumim function value Someone suggested that everything to be sent to the base on the moon must be sterelized so that no bacteria of any kind are present.Do you think this is a good idea What pressure is exerted by 1.11 mol of hydrogen gas in a 8.17 L container at 50C?Answer in units of atm. Which statement is true about all adaptations? O A. They can be lost. O B. They enhance survival. O c. They reduce reproduction. O D. They are learned.