r + 4s = -8
3r + 2s = 6

Answers

Answer 1

Answer:

R = 4

s = -3

Step-by-step explanation:

r + 4s = -8

3r + 2s = 6

there are several ways to solve this system but i chose the elimination method and multiplied the second equation by -2 to get:

  -6r - 4s = -12 and added it to the first equation

+ 1r + 4s =  -8

 -5r = -20

   r = 4

plug in to find 's':  4 + 4s = -8

                              4s = -12

                               s = -3


Related Questions

Find the standard form of the equation for the conic section represented by x^2 + 10x + 6y = 47.

Answers

Answer:

The standard form of the equation for the conic section represented by [tex]x^2\:+\:10x\:+\:6y\:=\:47[/tex] is:

[tex]4\left(-\frac{3}{2}\right)\left(y-12\right)=\left(x-\left(-5\right)\right)^2[/tex]

Step-by-step explanation:

We know that:

[tex]4p\left(y-k\right)=\left(x-h\right)^2[/tex] is the standard equation for an up-down facing Parabola with vertex at (h, k), and focal length |p|.

Given the equation

[tex]x^2\:+\:10x\:+\:6y\:=\:47[/tex]

Rewriting the equation in the standard form

[tex]4\left(-\frac{3}{2}\right)\left(y-12\right)=\left(x-\left(-5\right)\right)^2[/tex]

Thus,

The vertex (h, k) = (-5, 12)

Please also check the attached graph.

Therefore, the standard form of the equation for the conic section represented by [tex]x^2\:+\:10x\:+\:6y\:=\:47[/tex] is:

[tex]4\left(-\frac{3}{2}\right)\left(y-12\right)=\left(x-\left(-5\right)\right)^2[/tex]

where

vertex (h, k) = (-5, 12)

Javier is buying fencing to surround his garden. If his garden has a perimeter of 30 yards, and fencing costs $6.00 a yard, how much money will he need for the fencing?

Answers

$180

Step-by-step explanation:

30 x 6 = 180

Answer:

180 it is basic multiplication

Step-by-step explanation:

Evaluate (6.1 x 10-3) (8 x 109). Write your answer in scientific notation and standard form.
Scientific Notation:
Standard Form:

Answers

Answer:

Scientific Notation: 4.88 ×10^7

Standard Form: 4.88 ×10^7

Step-by-step explanation:

6.1×10^(-3) = 0.0061

8×10^9 = 8000000000

0.0061×8000000000 = 48800000

[tex] = 4.88 \times {10}^{7} [/tex]

I need help..Please make it correct..

Answers

Answer:

11/13

Step-by-step explanation:

3/13, 5/13, 7/13, 9/13, 11/13

3/13

3/13 + 2/13 = 5/13

5/13 + 2/13 = 7/13

7/13 + 2/13 = 9/13

9/13 + 2/13 = 11/13

help please
solve for X​

Answers

X would have to equal 30
Answer: 30

29+1+2x=90
30+2x=90
-30 -30
2x=60
X=30

OLEASE HELP I BEG YOU

Answers

Answer:1 is the remainder hope it helps

Answer:

This is pretty easy the dividend is 34,465 and the divisor is 6 and whatever the answer is will be the quotient

Step-by-step explanation:

hope this helps :>

Simplify the expression.
3.4m + 9 - 2.4m =blank

Answers

Answer:

m+9

Step-by-step explanation:

what is the property pls help

Answers

Answer:

B

Step-by-step explanation:

Because its addition

Answer:

I'm pretty sure it's B). Additive identity Property.

Step-by-step explanation:

If it isn't let me know.

Brock divided all of his games into 3 shelves, and there were at least 12 games on each shelf. What inequality matches this scenario

Answers

Answer: See explanation

Step-by-step explanation:

From the question, we are informed that Brock divided all of his games into 3 shelves, and there were at least 12 games on each shelf.

The inequality that matches this scenario will be:

x ≥ 12.

Since there were at least 12 games, we would use the greater than or equal to sign.

When one power is exponentiated by
an exponent, what is done with the
exponents?

Answers

I’m pretty sure they are multiplied, if I understand your wording

Can someone help me with this??

Answers

It would be a=3 b=3 c=5

Answer:

the second option, a=3 b=3 c=5

Step-by-step explanation:

first I would change them both into an improper fraction:

9/2 divided by 5/4

dividing is the same thing as mulitiplying by the reciprocal of the second number. so you would mulitply 9/2 x 4/5 = 36/10 and then you simplify back to a mixed number 3 6/10, 6/10 can be reduced so the final answer is 3 3/5.

What is the approximate distance between points (-5,-1) and point M (7,6)?
A. 19.3units
B. 96.5units
C. 7 units
D. 13.9 units

Answers

C.) 7units im gay im gay 69430

Can someone walk me through this?

Answers

Answr :

I hope my answer is correct

m<Jmk = m<HML. m<HJL=m<KHJ

m<JKH=m<JHL m<LHK=m<JLH

m<HLK = m<HJK. m<JLK= m< HJL

A system of equations is shown below. y = 2x - 9 y = x + 3 What is the solution to the system of equations?​

Answers

Answer:

Well, you would need to graph both, and you can see they intersect at the point (12,15)

Ima just need help again

Answers

Answer:

B, E

Step-by-step explanation:

One angle of a triangle measures 75. The other two angles are in a ratio of 5:16. What are the measures of those two angles?

Answers

Answer:

25 and 80

Step-by-step explanation:

180 - 75 = 105

105 / (5+16) = 5

multiply each side of the ratio 5:16 by 5

5x5 : 16x5 = 25:80

The perimeter of a rectangular pool is 72 meters. If the length of the pool is twice its breadth. Its length is_________.

Answers

Answer:

Length = 18 meters

Step-by-step explanation:

Let the length of the rectangular pool = l meters

And breadth of the pool = w meters

Perimeter of the rectangular pool = 2(l + 2w)

Since, perimeter of the rectangular pool is 72 meters.

2(l + 2w) = 72

l + 2w = 36 --------(1)

If length of the pool is twice of its breadth,

l = 2w

w = [tex]\frac{l}{2}[/tex] -------(2)

By substituting the value of 'w' from equation (2) to equation (1),

[tex]l+2\times{\frac{l}{2}}=36[/tex]

2l = 36

l = 18 meters

Explain the three different types of solutions you can get when solving a system of
equations.

Answers

Answer:

There are three possible outcomes for a system of linear equations: one unique solution, infinitely many solutions, and no solution.

Step-by-step explanation:

9514 1404 393

Answer:

no solutionsa finite non-zero number of solutionsinfinite solutions

Step-by-step explanation:

1. No Solutions

This case arises when the equations are inconsistent. No values of the variables can satisfy all of the equations. An example is ...

y = xy = x+1

__

2. Finite Number of Solutions

The number of distinct solutions depends on the degree of the system and the domain being considered. For example, an n-th degree polynomial equation in one variable will always have n solutions in the domain of complex numbers. However, it may or may not have any real-number solutions. (The question here has no context, so we have to assume it is about any system of equations of any degree or nature (rational, polynomial, exponential, mixed, or other.))

__

3. Infinite solutions

An under-specified system, such as a system of 3 equations in 4 variables, may have an infinite number of solutions. In such a system, one or more of the variables may be allowed to assume any value. Systems that have dependent equations will fall into this category.

The temperature dropped 20 degrees from noon to midnight. The temperature at midnight was 24°F. Write and solve an equation to find the temperature at noon?

Answers

x - 20 = 24

Add 20 to both sides

x = 24 + 20 = 44

Explain how to use the distributive property to simplify: -2(x + 5) ?

Answers

Answer:

-2x-10

Step-by-step explanation:

Distributive Property is basically a term for opening parentheses. So, in your case -2(x+5) we would multiply x and 5 by -2. X times -2 is -2x and 5 times negative 2 is -10. -2x-10 would be your final answer.

[tex]\huge\bold{ANSWER:}[/tex]

-2x-10

[tex]\bf{EXPLANATION:[/tex]

Hi there!

Here's what the Distributive Property states:

a(b+c)=ab+ac

So, we take a number outside the parentheses, and "distribute" it.

In this case, we should distribute -2:

-2(x+5)

-2x-10 (a negative times a negative is a positive)

Hope it helps!

Enjoy your day!

Feel free to ask if you have any doubts! :)

[tex]\mathfrak{SilentNature~a.k.a.Sparkles}[/tex]

Write the phrase as an expression. Then evaluate the expression when y=20 . the quotient of 40 and the difference of a number y and 16 Expression: When y=20, the value of the expression is

Answers

Answer:

Write the phrase as an expression. Then evaluate the expression when y=20 . the quotient of 40 and the difference of a number y and 16 Expression: When y=20, the value of the expression is

please help me pleeeeeeaaassseee

Answers

Answer:

Step-by-step explanation:

answer no 3:

1] Factor out the common term 2.

2(3x+y) = -26

2] Divide both sides by 2.

3x+y= -26/2

3x+y = − 13

 

3]Subtract y from both sides.

3x = - 13-y

4] Divide both sides by 3.

x = -13-y/3

Part 2:-

Add 6y to both sides.

x=21+6y

x=21+6y

​  

The Science Club went on a two-day field trip. The first day the members paid $60 for transportation plus $11 per ticket to the planetarium. The second day they paid $85 for transportation plus $8 per ticket to the geology museum. Write an expression to represent the total cost in dollars for two days for the n members of the club.
if you can please solve it

Answers

Answer:

145 + 19t

Step-by-step explanation:

Which table could NOT represent a function?


input 0 1 2 3 4
output 2 4 6 8 10

input 30 40 50 60 70
output 21 11 -1 -11 -21

input 4 9 14 19 24
output 10 12 14 16 18

input -10 -10 0 0 10
output 8 16 24 32 40

Answers

Answer:

The fourth one

Step-by-step explanation:

Just cause its right

The last one is correct because the x repeats
If the x repeats it’s not a function

What is the volume of a cylinder with a radius of 4 yards and a height of 6 yards

Answers

Answer: 230. 58 m^3


Explanation: V=πr2h=π·3.662·5.49≈230.58431


Hope this is right

Answer:

301.59 yards

Step-by-step explanation:

At 9:00 a.m., it starts snowing outside Dario's home at the rate of 6 inches per hour. If Dario's front door is 84 inches tall, at what time will the snow reach the very top of Dario's front door?

30 POINTS PLUS BRAINLIEST!!!

Answers

At 11 pm it will cover the door

Answer:

Step-by-step explanation:

at 9:00AM starts snowing, 84/6=14

9:00 AM..........................0 inches

10:00AM..........................6inches

11:00AM...........................12 inches

12:00PM...........................18 inches

.......................................................

11:00PM..............................84 inches

THE QUESTION IS ABOVE​

Answers

Answer:

The box would be 14

Step-by-step explanation:

It would be 14 because 7/14 is equal to 1/2. And 2/4 is also equal to 1/2.

Answer:

7/14

Step-by-step explanation:

Have a nice day.....

solve the following for x 4(x+2) = 6x

Answers

Answer:

x = 4

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

4(x+2)=6x

distribute 4:

4x+8=6x

Subtract 4x from each side:

8=2x

Divide both sides by 2:

x=4

Evaluate 14 + (-2). (1 point)
O
16
-16
O
-12
12

Answers

the answer to 14+(-2) is 12

2/5 of 2/3

What’s the answer to this? I’m failing math and I kinda forgot how to do fractions lol

Answers

Answer:

4/15 is your answer my friend

Step-by-step explanation:

Answer:

when the equation says of, all you need to do is multiply the two numbers, so the answer is 4/15

------

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