Mathematics High School

Solve the system of equations using substitution.
- 4x + 4y= 8
y= -2x – 10
-
O (4, -18)
O (12, -34)
o(-4,-2)
O (-2,-6)

Answers

Answer 1
The answer is (-4,-2) .

You substitute the value of Y
solve the equation then substitute
the value of X, then again Slove
Answer 2

Answer:

(- 4, - 2 )

Step-by-step explanation:

Given the 2 equations

- 4x + 4y = 8 → (1)

y = - 2x - 10 → (2)

Substitute y = - 2x - 10 into (1)

- 4x + 4(- 2x - 10) = 8 ← distribute and simplify left side

- 4x - 8x - 40 = 8

- 12x - 40 = 8 ( add 40 to both sides )

- 12x = 48 ( divide both sides by - 12 )

x = - 4

Substitute x = - 4 into (2) for corresponding value of y

y = - 2(- 4) - 10 = 8 - 10 = - 2

Solution is (- 4, - 2 )

Related Questions

Determine whether AB and MN are parallel, perpendicular, or neither.
Graph each line to verify your answer: A(-1,4), B(2.-5), M(-3,2). N(3, 0)

Answers

Answer:

Neither

Step-by-step explanation:

They need a 90°angle to be perpendicular.

And it has to not be touching to be parallel.

3. Solve for x.
4d = txy

Answers

Answer:

[tex]\huge\boxed{x=\frac{4d}{ty}}[/tex]

Step-by-step explanation:

If we have an equation ([tex]4d=txy[/tex]) and we want to solve for x, we want to reverse the equation until we have x on one side. Basically - what's stopping x from being alone?

The answer would be the t and the y that are being multiplied by x. So we can divide both sides by t and y to get our answer.

This is the same as dividing both sides by [tex]ty[/tex].

[tex]4d \div ty = txy \div ty[/tex]

[tex]\frac{4d}{ty}=x[/tex]

Hope this helped!

a car decelerated from zero 40 mph to 0 mph what is the deceleration of thecar?

Answers

Answer:

40

Step-by-step explanation:

Deceleration means how much did it go down? It makes sense that 40 is correct! Let me know if I'm wrong.

Jocelyn wants to buy a pair of Jordan's that usually cost $160. The store is having a sale and all merchandise is discounted by 25%. What is the price of these Air Jordan after Jocelyn pays 7.5% sales tax?

A)$184.00
B)$136.00
C) $129.00
D)$197.80​

Answers

Answer:

c i think sorry if im wrong

Step-by-step explanation:

What is the Triangle inequality theorem?

Answers

Answer:

In mathematics, the triangle inequality states that for any triangle, the sum of the lengths of any two sides must be greater than or equal to the length of the remaining side.

Step-by-step explanation:

Answer:

In mathematics, the triangle inequality states that for any triangle, the sum of the lengths of any two sides must be greater than or equal to the length of the remaining side.

Step-by-step explanation:

bye

Explain how to use the distributive property to find the product 3 x 4 1/5

Answers

Answer:

12.6

Step-by-step explanation:

The answer is 12.6 and here is the explanation of using the Distributive Property. Because we are multiplying a whole number by a mixed number, we have to multiply the whole number by the whole number in the mixed number and then multiply the whole number by the fraction. In this case, we have 3 x 4 1/5. We multiply 3x4=12 first, and then we multiply 3x1/5 to get 0.6. 12+0.6=12.6. Hope it helps!

The product of  3 x [tex]4\frac{1}{5}[/tex] is 12.6.

What is Number system?

A number system is defined as a system of writing to express numbers.

The distributive property tells us how to solve expressions in the form of a(b + c).

The given expression is  3 x [tex]4\frac{1}{5}[/tex]

This expression can be written as 3(4+1/5)

The value of 1/5 is 0.2

3(4+0.2)

Now add 4 and 0.2

3(4.2)

Now multiply 3 and 4.2

12.6

Hence, the product of  3 x [tex]4\frac{1}{5}[/tex] is 12.6.

To learn more on Number system click:

https://brainly.com/question/22046046

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What is the distance between the points (19,-9) and (-5,-2)?

Answers

Answer:

look at image attached, hope this helps :)

Use the drop-down menu to complete the sentence.

Resistance is measured in units called _____.

Answers

Answer:

ohms

Step-by-step explanation:

Resistance is measured in units called ohms (symbol: Ω).

What is resistance?

Resistance is a property of an electrical component that resists the flow of electric current through it.

We have,

Resistance is measured in ohms, which is the unit of electrical resistance. One ohm is the resistance value through which a current of one ampere will flow when a potential difference of one volt is applied across it.

Resistance is an important concept in electrical engineering and physics, as it is a fundamental property of electrical circuits and components.

Thus,

Resistance is measured in units called ohms (symbol: Ω).

Learn more about resistance here:

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5 - 2y + 1/3 + y^3 - 10y for y = 4
I solved this equation but I'm not sure if I got the answer correct and if I messed up somewhere when I was solving it then I got my answer wrong. So if someone could please help me that would be very much appreciated!!!!!

Answers

Answer:

4

Step-by-step explanation:

i think i am correct but if im not sorry

h(8)=5x-13
help pleasee

Answers

Answer:

27

Step-by-step explanation:

substitute the given value into the function and evaluate

Please help I don’t know it

Answers

Answer:

109

Step-by-step explanation:

Answer:

109 because it will be equal to the other angle so u have 109+1=110

Step-by-step explanation:

The temperature in Miami, Florida is 22 degrees warmer than three times the temperature in Bangor, Maine. The temperature in Miami is 82 degrees. Write an equation to determine the temperature in Bangor. NEEED HELP PLZ :(

A 3x + 82 = 22
B 3x + 22 = 82
C 3x − 22 = 82
D 3x − 82 = 22

Answers

B.3x+22=82 is the correct answer

Answer:

I think option 2 is correct

3x+22=82

Hope u like it

John and two friends are going out for pizza for lunch. They split one pizza and three large drinks. The pizza cost $12. They spend a total of $16.95. Find the cost of one large drink.

Answers

Answer:

$1.65

Step-by-step explanation:

16.95-12=4.95

4.95 divided by 3= 1.65

If one inch represents 65 miles
on a map, how many inches will
represent 1,885 miles?

Answers

Answer:29

Step-by-step explanation:

1885/65

Sb please help me!!!

Answers

Answer:

A

Step-by-step explanation:

Solve the following inequality algebraically.

| x-8 | > 4

Answers

Answer:

x>12

This is the answer

The middle question. Any help would be nice

Answers

Answer:

"Nothing but net" won the game

Step-by-step explanation:

Answer:

they won

61 to 43

Step-by-step explanation:

Ms. Morgan bought 3.5 pounds of bananas at $0.54 a pound. If she paid with a $10 bill, how much change will she receive? just the bananas just curious cause im dumb as heck

Answers

Answer:

$8.11

Step-by-step explanation:

Answer:8.16$

Step-by-step explanation:

One-fourth of a number is 22. Find the number

Answers

Answer:

5.5

I hope this helps!

Mark brainliest!

what is the likelihood of throwing a 4 with a single throw of adie​

Answers

Answer:

1/6.

Step-by-step explanation:

As there are 6 sides to a die than answer is 1/6.

The answer is 1/6

Explanation: There are 6 sides to die and there’s only one 4 on the die. So that makes 1/6 times u would roll a 4.

what is resistance in a circuit when the current is 0.5 ampere

Answers

Answer:

R=12/0.5 - 24 ohms

Step-by-step explanation:

Find the slope of the line.

Answers

[tex]The\;slope\;is\;-3.\\\\The\;slope\;is\;the\;x\;which\;is\;the\;line\;that\;goess\;horizontal.\;Therefore,\\\;the\;point\;is\;on\;the\;negative\;side\\\;and\;it\;is\;3\;boxes\;to\;the\;left\;so\;that\;means\;the\;slope\;is\;-3.[/tex]

Solve the literal equation below for
4= Sr - p

Answers

Answer:

4/5 + p/5

Step-by-step explanation:

HELP!!!

What is the equation of the line that passes through the point (-5,–6) and has a
slope of 3/5?

Answers

Answer:

y=3/5-3

Step-by-step explanation:

Is this Kumon LOL?

y=mx+b

y=3/5x+b

-6=3/5 times -5=b

b=-3

An airline tracks the time an airplane is parked unloading and loading passengers. The line plot displays the amount of time a number of airplanes were parked on one day. If the total amount of time were divided equally among all the airplanes, how long would each airplane have been parked? Amount of Time Planes are Parked A. B. C. D.

Answers

I think it is C not sure or it’s A

Answer:

It was A 4/7

Step-by-step explanation:

I will give brainliest for who answers! I need help!

Answers

Answer:

A

Step-by-step explanation:

31%

The blue says 31%

Answer:

The answer is #1 (A)

Step-by-step explanation:

please mark brainliest i am begging you i only have one

Your bank account balance is -$1.56. You deposit $10. What is your new account balance?​

Answers

Answer:

$8.44

Step-by-step explanation[tex]10+(-1.56)=8.44[/tex]

Answer:

$8.44

Step-by-step explanation:

There is -$1.56 in your account already.

You add $10 to that amount

-$1.56+$10 = $8.44

The point where the graph intersects the y-axis represents the beginning of the

Answers

Answer:

the origin

Step-by-step explanation:

A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The point where the x-axis and y-axis intersect is called the origin.

What is the scale of a map if 1 cm on a map represents 20 km in real life?

Answers

Answer:

1cm: 20km

Step-by-step explanation:

0.1254 is rational or irrational ?

Answers

Answer:

Rational

Step-by-step explanation:

You can write it as a ratio of a/b

Answer:

Irrational

Step-by-step explanation:

Irrational- anything that can be written as a decimal.

Rational- anything that can be written as a fraction.

Hope this helps. Plz give brainliest.

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