4x -2y = -2
-3x + 5y =-9

Answers

Answer 1

Answer:

x = -2.75 and y = 1.5.

Step-by-step explanation:

To solve the system of equations 4x - 2y = -2 and -3x + 5y = -9, we can use the elimination method. This method involves adding or subtracting the equations in a way that eliminates one of the variables, leaving us with an equation in terms of the remaining variable.

First, we can add the equations together to eliminate the y variable:

(4x - 2y) + (-3x + 5y) = (-2) + (-9)

Combining like terms on the left side of the equation gives us:

x + 3y = -11

Next, we can solve for x by dividing both sides of the equation by 4 to get:

x = (-11) / 4 = -2.75

Once we have found the value of x, we can substitute it back into one of the original equations to solve for y. Let's use the second equation, -3x + 5y = -9, and substitute -2.75 for x:

-3(-2.75) + 5y = -9

Solving for y, we get:

y = (-9 - (-8.25)) / 5 = 1.5

Therefore, the solution to the system of equations 4x - 2y = -2 and -3x + 5y = -9 is x = -2.75 and y = 1.5.


Related Questions

¿Qué número NO pertenece al conjunto de los números racionales ?

A) -3,4 3,2764...
B)1,9999999...
C)0
D)1/6

Answers

Answer:

D

Step-by-step explanation:

is y = 7/8x proportional or non-proportional??

Answers

Answer:

It is proportional

Step-by-step explanation:

May have brainllest I only need 39 more to get to genius

Please Answer! I will give brainiest. The Picture is down below :)

Thank You!

Answers

Answer:

there's no pic!..............

Natasha conducted a survey to determine how many of the 215 workers in her office building use public transportation to get to work. She surveyed 30 randomly selected workers who entered the office cafeteria throughout the day. Of the 30 workers surveyed, 9 used public transportation to get to work.
Which change to Natasha's survey process would make the data more reliable?

A. Ask a randomly selected sample of people who use public transportation whether their office is in the building.

B. Use a different sample size so the predicted number of workers who use public transportation is a whole number.

C. Have workers complete a written survey so there is a written record of the responses.

D. Randomly select the sample in the lobby of the building so workers who do not enter the cafeteria can be included.

Answers

Answer:

D

Step-by-step explanation:

A car is traveling at a constant speed of 60 miles per hour. Complete the table below to the distance that the car travels in hours.

Answers

Answer:

The value for the first one is “d= 60t”
because that’s how much the car travels per hour.
The values for the second question is “450=60t” because 450 is the amount of miles the car traveled in total, and again the 60 is how many miles the car travels per hour.

Hope this helped!

SOMEONE PLEASE HELP!
5.) Write both an explicit equation and a recursive equation for the sequence 4, 2, 1,05,0.25...

Explicit equation:


Recursive equation:


HURRY PLEASE!!!​

Answers

Since the common ratio is 0.5, hence the recursive equation will be an = 0.5an-1 and Tn = 4(0.5)^n-1 (Explicit equation)

Sequence and series

Sequences are number arranged in a specified pattern. Given the geometric sequence

4, 2, 1,05,0.25...

Common ratio. = 2/4 = 0/.5

First term a = 4

The nth term of the  sequence in explicit form is Tn = ar^n-1

Tn = 4(0.5)^n-1 (Explicit equation)

For the recursive function

Explicit equation = an =ran-1

Since the common ratio is 0.5, hence the recursive equation will be an = 0.5an-1

Learn more on sequence here: https://brainly.com/question/6561461

#SPJ1

At 7am there was 4 inches of snow on the ground. After that, the snow fell at a rate of 1.5 inches per hour. Equation:

Answers

Answer:

y(t) = 4 + 1.5t

.

Step-by-step explanation:

Initial amount of snow = 4 inches

Fall rate of snow = 1.5 inch per hour

Equation to model the scenario goes thus :

Initial amount of snow + (fall rate of snow * number of hours)

Let the number of hours = h

4 inches + (1.5 inch per hour * h)

Equation, y(t) becomes ;

y(t) = 4 + 1.5t

Which of the following slopes show that the set of points C(1, -1), D(3, 4), E(5, 8) are not collinear?

1. 2/5, 1/2, 4/9
2. 5/2, 2, 9/4
3. -2, 2, 9/4
4. 2, 3, 5/2

The set of points W(4, 4), X(6, 2), Y(-8, 16) are collinear and the line has a slope of ____.

1. -1
2. 3/4
3. 1/2
4. 1

Which of the following slopes show that the set of points C(1, 1), D(3, -4), E(5, 8) are not collinear?

1. 6, -5/2, 7/4
2. -1, 1/2, -3/5
3. 1/2, 3, 5
4. 1/3, -5/3, -2/5

Answers

are not collinear 3

line has slope of 3

not collinear 4

Answer:

2. 5/2, 2, 9/4

1. -1

1. 6, -5/2, 7/4

Step-by-step explanation:

I just did this lesson.

The answers to your questions are

2. 5/2, 2, 9/4

1. -1

1. 6, -5/2, 7/4

What is the length of XY ? Please answer correctly !!!!!Will mark Brianliest !!!!!!!!!!!!

Answers

30

bc the length of XW is 30 and XW is equal to XY so the length of XW is 30.

mario needs to cut three book shelves from a board that is 1.8 meters long. the second shelf is 15 centimeters longer than twice the length of the first shelf . the remaining shelf is 5 centimeters longer that the first shelf. the equation below represents this situation, where x is the length of the first shelf in meters

x+(2×+0.15)+(×+0.05)=1.8

A. 0.40
B.0.45
C.0.53
D.0.96​

Answers

Answer:

0.40

Step-by-step explanation:

4x+0.15+0.05=4x+0.2=1.8

1.8-0.2=1.6

1.6/4->x=0.4

A biologist is studying a group of alligators in a swamp and tagged 4 hatchlings, 5 juveniles, and 6 adults. The biologist estimates that this tagged sample is a reliable reflection of the ratios of hatchlings, juveniles, and adults in the general alligator population for the area. The biologist estimates that the total number of alligators in the area is 120. The most likely number of adults in the total population is ______?

A. 32
B. 48
C. 72
D. 120
AND PLZ NO LINKSSSS

Answers

48 man hope this helps papi

Answer:

48

Step-by-step explanation: Take the 6 adults and divide it by one of the multiple choice answers to get a ratio. The ratio of 48 / 6 = 8. You can then see if that ratio helps you add up all the alligators to 120.

4 x 8 + 5 x 8 + 6 x 8 = 120

i need step by step answers

Convert the equation to Standard Form.



y=2(x+1)^(2) −4

Answers

Answer:

(-8x2-16x-8)

Step-by-step explanation:

y= (2x + 2)^2 (2 - 4)

y= (2x + 2)(2x + 2)(2 - 4)

y= −82−16−8

PLEASE HELP WITH GOVE BRAINLY

Answers

Use Symbolab, or photo math, it’s an app and it really helps me!

it's all on the picture ​

Answers

Answer:

1. 6 square feet 2. 32ft

Step-by-step explanation:

1. 2x3=6

2. 8 times how many sides so that would be 8x4 which would equal 32

Cockroaches can digest a wide range of substances, which makes them a(n) _____.
A.specialist species
B.generalist species
C.keystone species
D.indicator species

Answers

Answer:

specialist species

Solve for x.
x2 - 49 = 0

A)0

B)+49

C)+49i

D)+7

Answers

Answer:

x=±7

Step-by-step explanation:

x²=49

x=±7

Answer:

D) +7

Step-by-step explanation:

x2-49=0

x2= +49

√x2= √+49

x= +7

Can someone put an example of how to do bearings for precal?

Answers

Answer:

A bearing is used to represent the direction of one point relative to another point. For                                                                                                                          example, the bearing of A from B is 065º. The bearing of B from A is 245º.

5 Find each probability if you pick two marbles without replacing the first (G = green; R = red; Y = yellow).
T. P(red, then green) F. Plyellow, then not yellow)
G G G G
E. P(red, then yellow) R. P(green, then not green)
M. P(green, then green) W. P(not red, then not red)
R R Y Y
Y

Answers

Answer:

Sorry but your question is incomplete!

it's impossible to answer this question if we don't know the total number of outcomes

I'm referring to writing the question instead of OCR-ing it

solve for x x(5x+2)=0​

Answers

Answer:

x = 0.4

x = 2/ 5

Step-by-step explanation:

Answer:

x=0 or x=-2/5

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5x2+2x=0

Step 2: Factor left side of equation.

x(5x+2)=0

Step 3: Set factors equal to 0.

x=0 or 5x+2=0

Hope it helps ;)

(2x-12)=56 how do you find x

Answers

Answer:X=4

Step-by-step explanation: you add 12 to both sides which should get you 2x=68 and then divide both sides by 2 which should get you X=4

Calculate the circumference of a circle whose radius is 7.2 Cm (Idek I just woke up lol)

Answers

i believe the answer would be 45.24 cm

Find the measure of the angle indicated

Answers

I would say you would subtract 180 minus 76 because a straight line equals 180 if I’m wrong I’m sorry

Given that 1 inch =2.54 how many centimeters are in 8 feet

Answers

Answer:

243.84 cm

Step-by-step explanation:

8 feet = 96 inches

96 inches x 2.54 in/cm = 243.84 cm


PLEASE HEEEEEELP!!

Answers

Answer:

180- 20

Step-by-step explanation:

A straight line is 180 therefore the piece that is cut off has to be subtracted from 180. 20 is the cut off piece. 180-20= 160

Pls just order the temps I suck at temperature

8.4 degrees C below zero
10.9 degrees C below zero
8.8 degrees C

Answers

Answer:

from low to high:

10.9 degrees below zero C

8.4 degrees below zero C

8.8 degrees C

(if you want high to low, just reverse the order)

Flip it around it around and it will be correct

Add fractions with unlike denominators

Answers

Answer:

2.1

Step-by-step explanation:

I don’t get this problem at all-

Answers

Answer:

2nd option

Step-by-step explanation:

If AB  is a tangent to the circle then ∠ B is right angle

Using the converse of Pythagoras' identity.

If the square of the longest side is equal to the sum of the squares on the other 2 sides, then the triangle is right

longest side = 52 and 52² = 2704

48² + (10 + 10)² = 48² + 20² = 2304 + 400 = 2704

Then AB  is a tangent to the circle since ∠ B is a right angle

Multiply 28.253 × 0.49 = _____

Answers

Answer:

13.84397

Step-by-step explanation:

Step-by-step explanation:

28253/1000*49/100

1384397/100000

=13.84397

15
Decide whether each expression simplifies to a number less than-1, greater than 1, or
Neither
neither. Mark an X in the correct column for each expression.
Greater than 1
Less than -1
Expression
-7+ (-4)
-(3 ÷ 2)
(-5) ÷ (-3)
(-9) - 6

Answers

Answer:

less than -1

less than -1

greater than 1

greater than 1

Step-by-step explanation:

[tex] - 7 + - 4 = - 7 - 4 = - (7 + 4) = - 11[/tex]

LESS THAN -1

________________________________

[tex] - ( \frac{3}{2} ) = - (1.5) = - 1.5[/tex]

LESS THAN -1

________________________________

[tex] \frac{( - 5)}{( - 3)} = \frac{5}{3} = 1.66..[/tex]

GREATER THAN 1

________________________________

[tex]( - 9) - 6 = - 9 - 6 = - (9 + 6) = - 15[/tex]

LESS THAN -1

________________________________

Manuel needs to buy plastic spoons. Brand Ahas a box of 12 spoons for $1.12. Brand B has a box of 25 spoons for 2.69 Find the unit price for each brand. Then state which brand is the better buy based on the unit price. Round your answers to the nearest cent. Unit price for the Brand A spoons: I for each spoon Unit price for the Brand B spoons: $] for each spoon The better buy: O Brand A O Brand B O Neither (They have the same unit price)​

Answers

To find the price per spoon of brand A, divide the cost by the amount of spoons:

1.99 / 25 = 0.0796

Repeat this process for brand B:

3.89 / 42 = 0.0926

Brand A, at $0.08 a unit, is the better buy of brands A and B.

Answer:

Brand A: 0.92 Brand B: 0.11

Step-by-step explanation:

1.12 divided by 12 (round down)

2.96 divided by 25 (round up)

brand B is better to buy because you get more and it costs less per spoon

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