System of equations pls help me

System Of Equations Pls Help Me

Answers

Answer 1

Answer:

(4,4)

Step-by-step explanation:

We can solve this system of equations using the elimination method.

In order to use the elimination method there must be two variables with the same coefficient. Note that the coefficients don't have to have the same sign ( eg. 6 and -6 would work ). If there are two similar variables with similar coefficients then you can add or subtract, depending on the signs of the coefficients, the two equations "eliminating" the variable. There would then be one variable left over in which you can solve for.

For this case, both equations have 7x, one negative 7 and one positive 7. When the signs are different you add the two equations. So our first step is to add the two equations

7x - 4y = -44

+ (-7x -3y = 16 )

-----------------------

Remove parenthesis

7x -4y = -44

-7x -3y = +16

------------------

0x - 7y = -28

We are left with -7y = -28.

Because there is now only one variable, we can solve for it.

-7y = -28

divide both sides by -7

y = 4

Now we want to find the value of x. We can do this by plugging in the value of y into one of the equations and then solving for x. Note that we can plug in 4 for y into either equation and solve for x and we would get the same answer.

7x - 3y = 16

y = 4

7x - 3(4) = 16

multiply 4 and -3

7x - 12 = 16

add 12 to both sides

7x = 28

divide both sides by 7

x = 4

So x = 4 and y = 4 so the solution to the system of equations is (4,4)


Related Questions

solve pls brainliest

Answers

Answer:

1)3 meters/second

2)-16°C

Step-by-step explanation:

Hope it can help you lovelots

2x =3 solve for x in this equation​

Answers

Answer:

the answer is 3/2

Step-by-step explanation:

2x =3

x= 3/2 when you divide both sides by 2

Answer:

I might be wrong but 1 and 1/2

Step-by-step explanation:

I divided both sides by 2 to isolate the x

I got x = 3/2 which also equal 1 1/2

Find an equation of the circle whose diameter has endpoints (1,1) and (-5,-3) .

Answers

Answer:

(x+2)^2 + (y+1)^2 =13

Step-by-step explanation:

what is the quotient of 3/4 and 5/8

Answers

Answer:

6/5

Step-by-step explanation:

3/4 ÷ 5/8

Keep Change Flip

3/4x8/5

=6/5

Hope this helps :)

Solve for Z:

4 > 5Z + 34
help me so hard

Answers

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:  

Z  < − 6

Interval Notation:

( − ∞ , − 6 )

Step-by-step explanation:

Answer:

z<-6

Step-by-step explanation:

4-5Z>34

-5z>34-4

-5z>30

z<-6

do anybody know the answer to dis

53.9 - 5.07

Answers

Answer:

48.83

Step-by-step explanation

Help with elimination

Many Thanks

Answers

[tex]\left \{ {{-6y = -12} \atop {3x + 2y = -2}} \right. <=> \left \{ {{y = 2} \atop {3x + 2y = -2}} \right. <=> \left \{ {{y=2} \atop {3x + 2*2 = -2}} \right. <=> \left \{ {{y=2} \atop {3x = -6}} \right. <=> \left \{ {{y=2} \atop {x=-2}} \right.\\ => \left \{ {{y=2} \atop {x=-2}} \right.[/tex]

using oliver's table, how can you find the unit rate

Answers

The unit rate of the distance covered per unit stride taken is; 3.5 ft per stride.

How to find the unit rate?

From the given table and graph, we see that;

Number of strides taken is on the x-axis.

Distance covered for each respective number of strides is on the y-axis.

Now, the rate will be;

Rate = Change in Distance covered/Change in number of strides

Thus;

Rate = (14 - 7)/(4 - 2)

Rate = 7/2

Rate = 3.5 ft per strides

Read more about Unit Rate at; https://brainly.com/question/19493296

#SPJ1

Answer:

Oliver’s table indicates that for every increase of 2 strides, the distance he travels increases by 7 feet. So, the change in distance divided by the change in stride gives the unit rate.

Step-by-step explanation:

Belvedere goes to the store and buys a garden statue for $30. The store has a sales tax rate of 7.8%. How much tax will Belvedere have to pay?

Answers

Answer:

$2.34

Step-by-step explanation:

30x0.078=2.34

DUE BY 11:59 PM!!

HELP GREATLY APPRECIATED!!​

Answers

Answer:

Step-by-step explanation:

1. There are only 4 numbers including 5 that follow the "five or more" requirment, and the probability of spinning it once is 4/8, or 1/2. (The total sections is 8) Then we multiply 1/2 and 1/2 together to get the "two times in a row" requirement done. (1/2)*(1/2)= 1/4 is the probability.

2. There are two values on the spinner that are a multiple of 3, 3 itself and 6. Again, the total amount of numbers/sections is 8, so the probability of spinning a multiple of three is 2/8 or 1/4. The probability of spinning an odd number is 4/8 or 1/2. (1/2)*(1/4)=1/8 is the probability.

3. The probability of spinning one odd number is 1/2, and so we multiply 1/2 by itself four times. (1/2)*(1/2)*(1/2)*(1/2)=1/16 is the probability.

4. There are 6 numbers greater than two on the number wheel not including two itself. So the probability of that is 6/8, or 3/4. Then we multiply 3/4 by itself 3 times as it asks. (3/4)*(3/4)*(3/4)*(3/4)=81/256 is the probability.

Note that I am not really sure about the answer myself, but I hope that this can help in some way. Good luck! :)

In which diagram are angles 1 and 2 vertical angles?


Answers

Answer:

Step-by-step explanation:

can you upload diagram?

What is the value of the function Y equals 2X plus 3 When x equals -1

Answers

Answer:

1

Step-by-step explanation:

Y=2x+3

Y=2×(-1)+3

Y=1

x + 12 = 20 i really need help

Answers

Hello! :)

x+12=20

Move all numbers to the right, using the opposite operation:

x=20-12

x=8

Therefore, x=8

Hope it helps. Enjoy your day! :)

Do ask me if you have any question.

~An excited gal

[tex]MagicalNature[/tex] here to help

Can someone help me out with this please​

Answers

Answer:

  a. $4200

  b. $32,300

  c. $5814

  d. $30,686

  e. 2557.17

Step-by-step explanation:

a.

The man can claim all of the allowances shown in the problem statement, except the single person's allowance.

  total allowances = married + young child + child in school + dependent relative

  total allowances = $2400 +500 +1000 +300 = $4200

__

b.

The man's taxable income is his income after allowances have been deducted:

  taxable income = gross income - allowances

  taxable income = $36,500 -4,200 = $32,300

__

c.

The tax is found by multiplying the tax rate by the taxable income.

  tax = (tax rate) ×(taxable income)

  tax = 0.18 × $32,300 = $5,814

__

d.

The net income is the gross income less the taxes paid.

  net income = gross income - tax paid

  net income = $36,500 -5,814 = $30,686

__

e.

The man's net monthly salary will be 1/12 of his annual net income.

  net monthly salary = $30,686/12 ≈ $2,557.17

A cyclist travels 5.3 km in 30 minutes. What is his average speed in km/h?​

Answers

Answer:

10.6 km/h

Step-by-step explanation:

avg. speed in km/h literally tells us how much distance (in km) the cyclist travels in an hour. An hour happens to be double that of 30 minutes, so the distance will be double of 5.3km. The distance over an hour is 10.6km, so the speed is 10.6km/h.

Alternatively, you can simply divide distance by time:

5.3km / 30min = 5.3km / (1h / 2) = 5.3km * 2 / 1h = 10.6km/h

Answer:

hope this helps

Step-by-step explanation:

5.3 km 3.293 miles so the average speed would be 6.59 mph

A number is between 14 and 19. It has prime factors of 2 and 3. What is the​ number

Answers

Answer:

18

Step-by-step explanation:

18devided by 3 is 6 and 18 divided by 2 is 9

The number that has prime factors of 2 and 3 is 18.

What are prime factors?

Prime factors are factors that are prime numbers. Prime numbers are numbers that are divisible by one and itself. Examples are 2 and 3.

What are the factors of the numbers between 14 and 19?

Factors of 15 = 1, 3, 5, 15 Factors of 16 = 1, 2, 4, 8, 16Factors of 17 = 1, 17Factors of 18 = 1, 2, 3, 6, 8, 16

To learn more about  factors, please check: https://brainly.com/question/26073850

-7x > 10
Solve for x

Answers

Answer:

x > -10/7

Step-by-step explanation:

divide both sides by -7 and it will be x= -10/7


Show me the
volume of a cube
with side lengths
of 2

Answers

Answer:

8

Step-by-step explanation:

v=l*w*h so 2^3=8

SALE
75% OFF
original price!
If a desk has a sale price of $13, what was the original price?

Answers

Answer:

52$

Step-by-step explanation:

13 (75% off) so 13 is 1/4 the price.

13x4 = 52

What number should go in the space?
Multiplying by 0.51 is the same as decreasing by _____%.

Answers

Answer:

49

Step-by-step explanation:

x multiplied by 0.51 is the same as 49% of x

A cyclist travels 6.7 km in 30 minutes. What is his average speed in km/h?​

Answers

Answer:

[tex]\implies \footnotesize \text{ Average Speed} = \dfrac{ \text{Total Distance}}{ \text{Total time}} \\ [/tex]

30 min = ½ hr.

[tex]\implies \footnotesize \text{ Average Speed} = \dfrac{ 6.7 \: km}{ \frac{1}{2} \: hr }[/tex]

[tex]\implies \footnotesize \text{ Average Speed} = 6.7 \times 2 \: km/h[/tex]

[tex]\implies \footnotesize \textbf{ Average Speed = 13.4 \: km/h}[/tex]

His rate is 13.4km/ hour

Data;

Distance = 6.7kmTime = 30 minutes

Conversion From Minutes to Hours

To solve this problem, we have to convert his speed from km/min to km/h

[tex]60min =1 hour\\[/tex]

Since his rate is 6.7kmin 30 minutes, let's convert it to hour

[tex]6.7km = 30min\\x km = 1min\\x = \frac{6.7}{30} \\x = 0.223km/min[/tex]

But to convert minutes to hours, we have to divide the time by 60

[tex]0.223\frac{km}{min}*60/1 = 13.4[/tex]

From the calculation above, his rate is 13.4km/ hour

Learn more on conversion from minutes to hours here;

https://brainly.com/question/4845674

Becky's medical bill is $1374. She has a $150 deductible, plus 85% medical insurance
How much will Becky pay?
Helpppp

Answers

Answer:

$333.60

Let me know if you have any questions

A shipping container is In the shape of a right rectangular prism with a Length Of 11.5 feet a width of 10.5 feet and a height of 13 feet The container is compeletly filled with contents that weigh on average 0.29 pound per cubic foot. What is the weigh of the contents in the container to the nearest pound?

Answers

Answer:

0.30

Step-by-step explanation:

I'm not hundred percent sure but I believe it's 0.30

Answer:

V=455

Step-by-step explanation:

V= (L)(w)(H)

v= (11.5)(10.5)(13)

v=1569.75ft^3

v= (1569.75ft^3)(.29/ft^3)=445

Calculate the volume of a similar channel whose radius 1.5m. I need help in checking is A is correct and please send B with working if possible 3 first to answer gets ranked

Answers

Answer:

252.21m

Step-by-step explanation:

Times it by 3 and that should give you the answer you are looking for. Please mark it as brainliest

which answer is correct

Answers

Answer:

see below for answer

Step-by-step explanation:

(4p^2+32p)/(p-2)=(4p(p+8))/p-2

(p^2+p-6)/(2p^3+16p^2)=(p+3)(p-2)/(2p^2)(p+8)

(4p(p+8)/(p-2))*((p+3)(p-2)/((2p^2)(p+8)))=2(p+3)/p

49 kilogram of baking soda costs $2. How much does 1 kilogram of baking soda cost?

Answers

Answer:

4.5

Step-by-step explanation:

Answer:

4.5

Step-by-step explanation:

4.5

Help mE ASAPPPPPPPP PLSSSSS

Answers

Answer:

I think its

B) CG

I hope its right

Use properties to rewrite the given equation. Which equations have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p? Select two options.

a. 2.3p – 10.1 = 6.4p – 4
b. 2.3p – 10.1 = 6.49p – 4
c. 230p – 1010 = 650p – 400 – p
b. 23p – 101 = 65p – 40 – p
e. 2.3p – 14.1 = 6.4p – 4

Answers

Hope helps!,,,,,,,!,,,,

clara has a positive acceleration for 5 minutes

Answers

Answer:

The answer is C.

Step-by-step explanation:

Help me pleaseeeeeeeeereere

Answers

Answer:

£3.9

Step-by-step explanation:

Philip went to the shop with £9.60

spent £5.70

Money left = £9.60 -£ 5.70

                  =£3.9

Hence,

He came home with £3.9

Answer:

£3.9

Step by step explanation:

£9.60-
£5.70=
————
£3.9 (the remaining money)
Other Questions
what is the value of x + y? what is the punishment for drunk driving and killing someone The annual number of burglaries in a town rose by 50% in 2012 and fell by 10% in 2013. hence the total number of burglaries increased by 40% over the two year period.a. by what percent has the number of burglaries actually changed in the two-year period?b. by what percent would the crime have to decrease in the second year in order for the change over the two-year period to actually be a 40% increase? Aide-Mois.Reponse correct sil tu plait. what is 1/5 divided by 9? nineteenth amendment to the united states constitution Which organelle captures energy from the sunlight and uses it to produce food in a plant cellsA. ChloroplastB. NucleusC. RibosomesD. Mitochondria 3. Your bedroom is 14 feet by 10 feet and your sister's room is 12 feet by 10 feet. If youare going to paint both rooms the same color and the paint covers 250 square feet pergallon, how much paint will you need if you are going to paint the walls and ceilings?Assume the ceiling is 8 ft high. calculate lim F(X) [tex] {x }^{2} + 1 - 3 \frac{ ln(x) }{x} [/tex] volume of a cube with 7,5 cm The water level in a lake was monitored and was noted to have changed -2 1/3 inches in one year. The next year it was noted to have changed -1 5/6 inches. What was the total change in the water level over the two years? how many days till november 21st 2021 How did the Romans increase the effectiveness of trade by sea? 7+(4x8)-9 i need help this is weird Find the missing number.Write your answer on your answer sheet.3/52/6= 3/56/2= Choose the correct answer:- Biology ( is going to - will ) kill me. Amanda, Bryce, and Corey enter a race in which they have to run, swim, and cycle over a marked course. Their average speeds are given in the table. Corey finishes first with a total time of 1hr 50 min. Amanda comes in second with a time of 2hr 42 min. Bryce finishes last with a time of 3hr 16 min. Find the distance (in mi) for each part of the race. A response strategy requires suppliers be selected based primarily on A. being willing to share information. B. capacity, speed, and flexibility. C. cost. D. product development skills. Path:pHow much zinc oxide 10% cream and zinc oxide 1% cream are needed to make 454 g of zinc oxide 3% cream?Round your answer to the nearest tenth of a gram.ParagraphB1=N Several generations of one family have lived in their home in the mountains since the 1800s. The government designates a new wilderness area, putting the house within the wilderness boundaries. The family is now forbidden to use motorized vehicles to reach their home, they cannot operate a chainsaw to cut firewood, and they cannot string lines for telephones and electricity. This would be an example of: __________