-3x+4=15, 4x-y=-19 what is the solution by combining equations

Answers

Answer 1
-3x+4=15
-3x=15-4
-3x=11
x= -11/3

4(-11/3)-y= -19
-44/3-y= -19
-y= -19+44/3 multiply by (-1)
y=19-44/3
y=19•3/3-44/3
y=57/3-44/3
y=13/3

(x,y)=(-11/3, 13/3)




Related Questions

If PQRS is a kite, answer the question below.

Answers

21+90+x=180
x=180-111
x=69

90+46+y=180
y=180-136
y=44

Angle Q is congruent (equal to) angle S
44+69=113
Angle PSR is 113 degree
Angle QRT is equal to angle SRT
See photo for explanation.
Good luck.

Which of the following constructions can be accomplished with paper
folding?
Check all that apply.
A. Drawing a perpendicular line segment through a given point on a
given segment
. B. Constructing a circle with a radius from a given line segment
0 C. Finding the midpoint of a segment
D. Drawing a perpendicular line segment from a given point to a
given segment

Answers

The constructions that could be accomplished with paper folding are:

A.  Drawing a perpendicular line segment through a given point on a given segmentC. Finding the midpoint of a segmentD. Drawing a perpendicular line segment from a given point to a given segment

How do you find the midpoint of a segment using paper folding?

To do the above, one can fold the paper so that the two endpoints of the line segment can be seen on top of each other.

A segment perpendicular to another segment can be done using paper folding by folding the paper so that the paper is folded via the point and the segment that is seen on top of its own self.

Therefore, The constructions that could be accomplished with paper folding are:

A.  Drawing a perpendicular line segment through a given point on a given segmentC. Finding the midpoint of a segmentD. Drawing a perpendicular line segment from a given point to a given segment

Learn more about line segment from

https://brainly.com/question/3686873

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Each marble bag sold by Henry's Marble Company contains 5 purple marbles for every 4 orange marbles. If a bag has 20 orange marbles, how many purple marbles does it contain?

Answers

Answer:

25

Step-by-step explanation:

If it's 5 for every 4 and the bag has 20, 4*5 = 20 and you'd have to do that to the 5 as well to get 5*5=25.

A pair of designer sneakers was purchased for $120. Since they were purchased, their price has decreased by 15%

Answers

Complete question :

A pair of designer sneakers was purchased for $120. Since they were purchased, their price has increased by 15%. What is the new price?

Answer:

$138

Step-by-step explanation:

Given that :

Initial price = $120

Percentage increase in price = 15%

The new price of sneakers:

Initial price + (percentage increase in price * initial price)

New price :

$120 + (15% * $120)

New price :

$120 + (0.15 * $120)

New price of sneakers :

$120 + $18

New price of sneakers = $138

what is 2y-x=-4 in slope intercept form

Answers

Answer:

y= -1/2x - 2

Step-by-step explanation:

To change standard form to slope intercept form, bring the -x to the other side of the equation.

You'll have 2y=-4-x. Since there is no number on the -x, put a 1 on the front of it. (Not necessary). You'll have 2y= -4 -1x

Make y stand on its own. Divide the other side by 2.

You will end up with y= -1/2x -2

A car is traveling at an average speed of 80km/h.What is it's speed in meters per second (m/s)​

Answers

Answer:

22.21 m/s

Step-by-step explanation:

1 hour = 80km

1 minute = 80000 ÷ 60 = 1.333km

1 second = 1.333 ÷ 60 = 22.21

Nicholas Has a very large soup pot shaped like a cylinder that has a height of 20 inches and a radius of 6 inches. How much soup can Nicholas’s soup pot hold ?

Answers

Answer:

2262 in³

Step-by-step explanation:

Given that:

Height, h = 20 inches

Radius, r = 6 inches

Volume of a cylinder is given as :

V = πr²h

V = π * 6² * 20

V = π * 36 * 20

V = 2261.9467 in³

Hence, Nicholas pot can hold about 2262 in³ of soup

A school band went on a trip to a music festival. The band director was admitted for free, but it cost $100 to rent a bus for the trip and $4 for each student to get into the festival. The total cost of the trip was $244. Which equation can be used to find s, the number of students that went on the trip?

Answers

Answer:

100 + 4s = 244

Step-by-step explanation:

Cost of the ticket for s students = 4s

Bus rent  + cost of ticket for 's' students  = $ 244

100 + 4s = 244

Answer:

i cant answer it either its so hard

Step-by-step explanation:

I suck at math so thanks for helping

Answers

Answer:

7.5

Step-by-step explanation:

The square has 4 equal sides, so you take the p,(30) and divide it. 30/4 = 7.5

To check your answer add 7.5 four times since the square has 4 equal sides.

7.5 + 7.5 = 15

15 + 7.5 = 22.5

22.5 + 7.5 = 30

1 divided by 4 = ?

giving brain

Answers

Answer:

0,25

Step-by-step explanation:

Answer:

0.25 or 1/4

Step-by-step explanation:

Maggie has $16 to spend on lunch for the week. she has spent $4 so far. which inequality shows how much she can spend for the rest of the week?

Answers

She can spend less than or equal to $12

please helpppp!!!will mark brainlyist

Answers

The answer is CB, AC, and AB

please help i dont understand

Answers

Answer:

t (is less than or equal to) 96

Step-by-step explanation:

to solve for t, you need it to be isolated. to move the 3 to the other side, you need to multiply it on both. 3 x t/3= t and 32 x 3= 96, therefore t (is less than or equal to) 96.

i hope this helps :)

Answer:

t ≤ 96

Step-by-step explanation:

t / 3 ≤ 32

(multiply both sides by 3)

t / 3 * 3 ≤ 32 * 3

t ≤ 96

Can yall help im mentally slower than the average human

Answers

Answer:

I think it would be 216cm

Step-by-step explanation:

how I got this answer?:

cubes are mostly the same in all sides due to all the sides being equal

The area of 6 squares is 216 cm^2
Each square is then 216/6 or 36 cm^2

The area of a square is length of one side times the length of an adjacent side or Area = s^2
36 = s^2
s = 6

A right rectangular prism has a length of 3 1/3 yards, a width of 2 1/2 yards, and a height of 4 1/3 yards. What is the volume of the prism?
Answer choices:
A: 10 1/6 cubic yards
B: 24 1/18 cubic yards.
C: 35 1/2 cubic yards.
D: 36 1/9 cubic yards.

Answers

A because they have a common denominator also it has to be the least common denominator which is 6

Determine which function has a greater initial value and explain how you know.
function 1: y=2(1/3)^x​

Answers

Answer - Function 2

Function 1 - y = 2x (1/3)^x    x = 0 =2*0*1 = 0

Function 2 have the value for 3 for x = 0

Function 2 is greater

How are you really? 100 points, Be honest.

Answers

Answer:

Why are you wasting your points? LOL XD

Step-by-step explanation:

Answer:

Good

Step-by-step explanation:

The number of 5p, 10p, and
20p coins in a jar are in the
ratio 7:4:3. If there are
5p coins are worth 70p
calculate the total value of
the money in the jar.

Answers

Answer:

Step-by-step explanation:

70p/5=14

14*4=56*10=560p

14*3=42*20=840p

840+560+70=1470

=1470p or (£14.70)

The total value of money in the jar is 270p.

What is addition?

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

The number of 5p, 10p, and 20p coins in a jar are in the ratio 7:4:3.

That means,

Number of 5p coins are 5x, 10p coins are 4x and 20p coins are 3x.

And 5p coins are worth 70p.

That means, x = 70p/5p

x = 14

So,

The total worth of coins are,

= 70p + 80p + 120p

= 270p

Therefore, the worth of the coins are 270p.

To learn more about the addition;

brainly.com/question/29464370

#SPJ2

Find the area of the shaded region. Round your answer to the nearest tenth.

Answers

Answer: 2.5 or 2 1/2.

Step-by-step explanation:

Meghan is 45 inches tall. Which measurement describes Meghan's height?

Answers

Answer:

3 feet and 9 inches

Step-by-step explanation:

answer is already there

Answer:

45 inches = 3.75 foot

45 inches = 1.143

Step-by-step explanation:

An inch measurement It is equal to ​1⁄36 yard or ​1⁄12 of a foot

Metric (SI) units: 25.4 mm

Income East and West of the Mississippi




For a random sample of households in the US, we record annual household income, whether the location is east or west of the Mississippi River, and number of children. We are interested in determining whether there is a difference in average household income between those east of the Mississippi and those west of the Mississippi.



Incorrect answer iconYour answer is incorrect.



(a) State the null and alternative hypotheses. Your answer should be an expression composed of symbols:



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.



(b) What statistic(s) from the sample would we use to estimate the difference?



Let group 1 be the households east of the Mississippi River and let group 2 be the households west of the Mississippi River.

Answers

Answer:

H0: μ1 = μ2

H1: μ1 ≠ μ2 ;

xbar1 - xbar2

Step-by-step explanation:

The Null hypothesis should state that there is no difference in average household income between those located east and west of the Mississippi

H0: μ1 = μ2

H1: μ1 ≠ μ2

Statistic from the sample that would be used to estimate difference

Statistic refers to the numerical characteristic derived from the sample.

To estimate the difference in the average household income between those located east and west of the Mississippi, we take the sample mean of the two groups

Group 1, East of Mississippi = xbar 1

Group 2, West of Mississippi River = xbar 2

xbar1 - xbar2

7. A minor arc of a circle subtends an angle of 1059 at the centre of the circle. If the radius of the circle is 8.4 cm,
find the length of the major arc.
[tex]\pi = 22 \\ 7[/tex]

Answers

25 56 times 46 that is the answer becasue it is

find the degree of the polynomial

Answers

Answer:

Step-by-step explanation:

1) 5a - 2b² + 1

Degree of the polynomial = 2

2) 4x²-3x³ + 2x + 12

-3x³ + 4x² + 2x + 12

Degree of the polynomial = 3

To find the degree of the polynomial, arrange it in descending as per the power of the variables.

The highest power of the variable is the degree of the polynomial.

Solve system by substitution.

−5x−7y=3

x+6y=−19

Answers

-5x-7y=3
x+6y=-19
solve for x
x=-19-6y
substitution method
-5(-19-6y)-7y=3
when u solve u get y=-4
since y is -4
substitute that in
x+6(-4)=-19
x=5
so (x,y) = (5,-4)
x is 5 and y is -4

Simplify
sec x - tan x sin x

Answers

Answer:

cos x

Step-by-step explanation:

sec x - tan x sin x

[tex]\frac{1}{cosx} - \frac{sinx}{cosx} * sinx\\\\\frac{1}{cosx} - \frac{sin^{2}x}{cosx}\\\\\frac{1-sin^{2}x}{cosx} \\\\\frac{cos^{2}x }{cosx} \\\\cosx[/tex]

A man can paint a door in 1 1/4 hour? How many similar doors can paint in 7 1/2

Answers

Answer:

6 doors

Step-by-step explanation:

1 1/4 + 1 1/4 = 2 1/2 +2 1/2 = 5 + 2 1/2 = 7 1/2

1          2                   3+4          5+6

have a good day

pls help me with this question. will give brainliest.

q)Calculate the length of the side marked x in each of the following.

Answers

Answer:

points

Step-by-step explanation:

if the length of a rectangle in terms of x is x^2+2x-3 and its width is 2x^2+3x+5, what is the perimeter of this rectangle?

perimeter: ___units

Answers

Step-by-step explanation:

perimeter=(L+W)2

L=x^2+2x-3

W=2x^2+3x+5

(x^2+2x-3+2x^2+3x+5)2

(x^2+2x^2+2x+3x-3+5)2

(3x^2+5x+2)2

p=(6x^2+10x+4)units

helpppppppp fassstttttttt​

Answers

Answer:

133

Step-by-step explanation:

Please help I have tried so many times and no one helps me please

Answers

Answer:

m(arc)RST = 154 deg

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary.

x + 77 + x + 103 = 180

2x + 180 = 180

2x = 0

x = 0

m<RST = x + 77 = 0 + 77 = 77

The measure of an inscribed angle is half the measure of its subtended arc.

m<RST = (1/2)m(arc)RST

77 = (1/2)m(arc)RST

154 = m(arc)RST

m(arc)RST = 154 deg

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