Mathematics High School

Use Substitution to solve the following System of Equations.
y=-22 - 4
y = 4x + 2
Oh

Use Substitution To Solve The Following System Of Equations.y=-22 - 4y = 4x + 2Oh

Answers

Answer 1

Answer:

X=4

Y=18

I think

Answer 2

Answer:

(- 1, - 2 )

Step-by-step explanation:

Given the 2 equations

y = - 2x - 4 → (1)

y = 4x + 2 → (2)

Substitute y = 4x + 2 into (1)

4x + 2 = - 2x - 4 ( add 2x to both sides )

6x + 2 = - 4 ( subtract 2 from both sides )

6x = - 6 ( divide both sides by 6 )

x = - 1

Substitute x = - 1 into either of the 2 equations and solve for y

Substituting into (2)

y = 4(- 1) + 2 = - 4 + 2 = - 2

solution is (- 1, - 2 )

Related Questions

-2/5 w+11 2/5=9 4/5 solve for w please

Answers

Answer:

w = 4.

Step-by-step explanation:

-2/5 w+11 2/5=9 4/5

-2/5w + 57/5 = 49/5

Remove the fractions by multiplying thru by 5:

-2w + 57 = 49

-2w = 49 - 57

-2w = -8

w = 4.

Answer:

w=  -8/5

Step-by-step explanation:

pls helpp, due in 5 mins !!

Answers

Slope is 1/2
Slope = rise/run
Rise = 1 and run = 2
Therefore the slope is 1/2

Please help me in this and I’ll mark you BRAINYLEST

Answers

Step-by-step explanation:

Given

[tex]3 {x}^{2} \times 4 {x}^{5} \\ = 12 {x}^{2 + 5} \\ = 12 {x}^{7} [/tex]

Hope it will help :)❤

Answer:

12x^7

Step-by-step explanation:

3x^2(4)x^5

=3*x^2*4*x^5

=12*x^7

=12x^7

Please give brainlist!

Please help
Which expressions are equal to

Answers

Answer:

2 is the answer

Step-by-step explanation:

Help me find x for the triangle!!!

Answers

Answer:

i hope it help u

Step-by-step explanation:

x=180-(85+63)

x=180-148

x=32

sea f(x)=3x3+5x, calcule f(5) + f(3)

Answers

Answer:

496

Step-by-step explanation:

Checks can be used to:
make purchases
pay rent
pay bills
all of the above​

Answers

Answer:

all of the above

Step-by-step explanation:

according to your question

The correct choice is all of the above

Which word has a negative connotation?
A. economical
B. expensive
C. costly
D. cheap

Answers

Answer:

The answer is D cheap.

Step-by-step explanation:

Hope this helped Mark BRAINLEST!!

Answer:

D. cheap

Step-by-step explanation:

When you think of cheap its kind of more like you can't afford something better, opposed to inexpensive where it just means "low cost".

Evaluate [5 - (4 - 2(6 - 2) + 2)] + 3

A. 12
B -54
C24
D -7
E None of the above

Answers

Answer:

e because the answer would be -4

it’s e, the right answer isn’t on there

Line AB contains points A (8, −4) and B (1, −5). The slope of line AB is (5 points) Group of answer choices −7 negative 1 over 7 1 over 7 7

Answers

Answer:

1/7

Step-by-step explanation:

Given that :

Line AB contains points A (8, −4) and B (1, −5)

Slope = Rise / Run

Rise = y2 - y1 = - 5 - (-4) = - 5 + 4 = - 1

Run = x2 - x1 = 1 - 8 = - 7

Slope = Rise / Run = - 1 / - 7

Slope = 1/7

What inverse operations do you use to solve for b?

-9 = -11 + b/8

Answers

Answer:

I would use multiplication

Step-by-step explanation:

Multiplication is the opposite of dividing.

Christine bought lunch 15 times at school this month and spent a total of $49.50. Each of her lunches cost an equal amount
Which equation could Christine use to determine the price of each lunch (p?
15p = 49.50
49.50p = 15
15+p=49.50
49,50 + p = 15

Answers

Answer:

The answer is 15p = 49.50

Answer:

The answer is $3.3

Step-by-step explanation: Because 49.50 divided by 15 is 3.3

Lakmini decided to measure the circumference of the Earth
using a very long tape measure. She held the tape measure
Im from the surface of the (perfectly spherical) Earth all the
way round. When she had finished her friend said that her
measurement gave too large an answer and suggested taking
off 6 m. Was her friend correct?
[Take the radius of the Earth to be 6400 km (if you need it).]

Answers

Answer:

Step-by-step explanation:

[tex]\Delta C=2\pi(r_2-r_1)\\ \\ \Delta C=2\pi(6400001-6400000)\\ \\ \Delta C=2\pi\\ \\ \Delta C\approx 6.283m\\ \\ \text{So taking off 6 meters is reasonable.}[/tex}

A certain hurricane travels at 20.88 kilometers per hour. The distance
from Cuba to Key West is 145 kilometers. Write and solve a multiplication
equation to find about how long it would take the hurricane to travel from
Cuba to Key West.

Answers

Answer:

6.94 hours

Step-by-step explanation:

20.88 = 145/t

20.88t = 145

t=145/20.88t

t=6.94

Answer:

6.94 hours

Step-by-step explanation:

A chef plaining for a large banquaet think that 2 out of every 5 dinner guests will order his soup appetizer he expects 800 guests at the banquat use equvilent ratios to estimate how many cups of soup he should prepare

Answers

Answer:

I think 80

Step-by-step explanation:

2*5=10

800/10 = 80

80 soups

320 people would order so im not sure how many cups each person would eat but if each person eats one cup of soup then it should be 320 cups

A rubber ball is thrown against the pavement and bounces into the air. If the ball is airborne for 2.5 seconds, how long after it bounces upward does the ball reach its maximum height?

Answers

Answer:

Step-by-step explanation:

1/2 * 2.5

= 1.25 seconds

Which angle is supplementary to ∠1?

Answers

Answer: angle 2 is supplementary to angle 1
the answer is angle 2

Let f(x) = 8x3 + 16x2 − 15 and g(x) = 2x + 1. Find f of x over g of x.


A) 4 times x squared plus 6 times x minus 3 plus 12 over the quantity 2 times x plus 1

B) 4 times x squared plus 6 times x plus 3 plus 12 over the quantity 2 times x plus 1

C) 4 times x squared plus 6 times x minus 3 minus 12 over the quantity 2 times x plus 1

D) 4 times x squared plus 6 times x plus 3 minus 12 over the quantity 2 times x plus 1


Thanks :')

Answers

Answer:

I think the answer is C. Its not B or D though

Step-by-step explanation:

What is the value of 80-5(x^2-y)+y when x=4 and y=6

Answers

Answer:h

Step-by-step explanation:

Use the distributive property to write an expression that is equivalent to 10(10x - 4).

Answers

Answer:

100x-40

Step-by-step explanation:

10*10x and  10* -4

Bailey made risotto using a recipe that called for 223 cups of liquid. Bailey added 23 cup of liquid to the risotto every 10 minutes. Drag and drop to complete the equation to find how many times Bailey added 23 cup of liquid.

Answers

Answer:

4 times

Step-by-step explanation:

Given that :

Cups of liquid required = 2 2/3

Fraction of liquid cup added per 10 minutes = 2/3

The number of times 2/3 cups of liquid is added :

Total cups of liquid required / amount of liquid added at a time

2 2/3 ÷ 2/3

8/3 ÷ 2/3

8/3 * 3/2

24 / 6

= 4 times

If the diagonals of a quadrilateral are congruent, is the quadrilateral always a rectangle?

Answers

Answer:

Yes

Step-by-step explanation:

The only quadrilaterals with congruent diagonals are squares and rectangles and squares are technically rectangles so the answer is yes.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral is always a rectangle which is false.

What is a quadrilateral?

The quadrilateral has four sides and four angles. The sum of internal angles is 360 degrees.

It is a polygon with four sides. The total interior angle is 360 degrees. A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral can be a square or a rectangle.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral is always a rectangle which is false.

More about the quadrilateral link is given below.

https://brainly.com/question/13805601

#SPJ5

The volume is ___ cubic centimeters.

Answers

Answer:

4.24

Step-by-step explanation:

Martha has two jobs. One pays $15 per hour, and she works at that job 10 hours per week. The other job pays $13 per hour, and she works at that job 30 hours per week. How much money does she make per year?


Answers

Answer:

540$

Step-by-step explanation:

8x-7(1/2x+7)=14
solve thid

Answers

First, you would use the distributive property to multiply -7 into the parenthesis. Then you’d have 8x-3.5x-49=14 Then you add 49 to both sides to combine like terms and get 8x-3.5x=63 Next you would combine like terms on the left side by subtracting 3.5x from 8x and end up with 4.5x=63 Then to get x by itself you would divide by 4.5 on both sides and end up with X=14 being your answer.

what is the value of 5 in 102,587​

Answers

5 is in the hundredth place

Chloe makes beaded keychains to sell at local craft fairs. To make k keychains, she uses 15k beads. On Saturday, Chloe made 50 beaded keychains. How many beads did Chloe use to make the keychains?

Answers

Answer:

750 beads

Step-by-step explanation: you multiply 15,000 by 50, then removing the 3 extra zeros

Answer:

750

Step-by-step explanation:

¿cómo puedo encontrar el valor de x en grados?
​

Answers

the answer of

1. x= 60

2. x= 50

Which is a better estimate for the volume of a conditioner bottle?

1 quart
or
1 Fluid Ounce

Answers

Answer:

1 Fluid Ounce

Step-by-step explanation:

Plz helpppppppppppppp helpppppppppppppp ​

Answers

Answer:

(A).option is correct..54cm2

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