how do I solve the symptoms of linear equations by substitution
2x-y=23
x-9=-1​

Answers

Answer 1

Answer:

x = 8, y = -7

in coordinate form: (8,-7)

Step-by-step explanation:

first, find x using the second equation:

x - 9 = -1

add 9 to both sides of the equation

x - 9 + 9 = - 1 + 9

x = -1 + 9

x = 8

next, substitute x for 8 in the first equation:

2x - y = 23

2 * 8 - y = 23

16 - y = 23

16 - y + y = 23 + y

16 = 23 + y

16 - 23 = y

y = -7

also, I had this exact question on an assignment earlier today ahah

Answer 2
Yes!! the person above got the correct answer!! hope you have an awesome day!!

Related Questions

What is 3 divide by 148 but it’s LONG DIVISION. Please

Answers

Answer:

49 r. 3

[tex]3 \div 148 \\ 3 \div 14 = 4 \\ 3 \div 28 = 9 \\ \\[/tex]

the answer is 49 but since three can go into 148 evenly the remainder is 3

Please help this is due today!!

Answers

Answer:

ostailean Chan will food agam

Second Roll First Roll 1 2 3 4 5 6 1 1-1 1-2 1-3 1-4 1-5 1-6 2 2-1 2-2 2-3 2-4 2-5 2-6 3 3-1 3-2 3-3 3-4 3-5 3-6 4 4-1 4-2 4-3 4-4 4-5 4-6 5 5-1 5-2 5-3 5-4 5-5 5-6 6 6-1 6-2 6-3 6-4 6-5 6-6 Select the favorable outcomes for rolling double sixes. (6-1) (6-5) (6-6) (6-3)

Answers

Answer:

(6 - 6)

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

Sally opens a bank account with $450. If she
earns 4% simple interest per year, how much
interest will she earn in 5 years if she doesn't add
or withdraw any money during that time? Please
type the steps that you use to solve this problem
below.

Answers

Answer: 540

Step-by-step explanation:

450 × .04 = 18

18 × 5 = 90

90 + 450 = *540*

if 2/5 of a man's money is 4500. what is the total money​

Answers

Answer:

Total money= 11250

In attachment

Pls help and explain why!

Answers

Answer:

A, SSS

Step-by-step explanation:

the 3 sides are equal with the other triangle

Answer:

SSS

Step-by-step explanation:

The triangles have three of the same sides, so it would be SSS.

Hope this helps!

Please mark me brainliest if possible. :)

An isosceles triangle is shown. What is the measure of F?
A)32°
B)58°
C)64
D)Cannot be determined

Answers

Answer: A

Step-by-step explanation:

Answer: 64

Step-by-step explanation:

angles G and E are congruent, add 58 + 58 then subtract by 180 so sum up 64

which expression has 3 terms

Answers

Answer:

D

Step-by-step explanation:

Solve the trig equation below. WILL AWARD BRAINLIEST!! MAX POINTS.

Answers

Answer: x = 3π/2

Hope this helps...... Stay safe and have a great rest of the weekend!!! :D

Myra gets paid at home for doing extra chores. Last week, she did 5 loads of laundry and 8 loads of dishes, and her parents paid her $18. The week before, she finished 4 loads of laundry and 6 loads of dishes, earning a total of $14. How much does Myra earn for completing each type of chore?

Answers

Answer: Laundry = $2

Dishes= $1

Step-by-step explanation:

Let the amount paid for doing laundry be x

Let the amount paid for doing dishes be y.

Based on the information in the question, this can be formed in an equation as:

5x + 8y = 18 ..... i

4x + 6y = 14 ...... ii

Multiply equation i by 4

Multiply equation ii by 5

20x + 32y = 72 ...... iii

20x + 30y = 70 ...... iv

Subtract iv from iii

2y = 2

y = 2/2 = 1

Dishes cost $1

Since 5x + 8y = 18

5x + 8(1) = 18

5x = 18 - 8

5x = 10

x = 2

Laundry cost $2

Which option for college funding can parents start when children are still very young? College savings account scholarship work-study student loan

Answers

Answer:

Your answer would be A: "college savings account."

Step-by-step explanation:

Got it right on edge.

College savings account is the option  for college funding can parents start when children are still very young

What is College funding?

College financial aid pays for the difference between what a school costs to attend and the amount a family will pay from their own money.

We need to find Which option for college funding can parents start when children are still very young.

Among the two options we have to choose College savings account.

Through this savings plan, you can contribute more than a traditional savings plan and take out the money to pay for college-related expenses without any penalty or tax.

Hence College savings account option  for college funding can parents start when children are still very young

To learn more on College funding click:

https://brainly.com/question/18614442

#SPJ6

How many of the 100 bin A items can be recycled at a specialized center?

Answers

Depending on how big the center is, I would say 15.
I hope this helped!

A train moves at a constant speed. The train travels 13
miles in 7 hour. What is the train's speed in miles per
hour?

Answers

Answer:

1.86 Miles per hour

Step-by-step explanation:

13/7

the sum of 3\4 and 18\19 is close to?

Answers

Answer:

2

Step-by-step explanation:

I'm not sure if it right but my answer was that

Does the following scenario model the equation y=2x+5 ?

there are initially 5 chickens on the farm. Each month thereafter the number of chickens is 2 times the number in the month before.

Answers

Answer:

no

Step-by-step explanation:

this is incorrect because it will not be double every month.

need help with this




just focus on what the question asks and not the background

Answers

Answer:

A

Step-by-step explanation:

a drop means subtraction and rising means addition

A clown has 9 red balloons and 4 blue balloons?
You pick one balloon without looking.
what is the chance it is red?

(A) 4/5

(B) 9/4

(C) 9/13​

Answers

Answer:

(C) 9/13

Plzzzzz give me Brainliest!!!!!  

Answer:

C. 9/13

Step-by-step explanation:

It’s kinda obvious because you can’t simplify that probability anymore unless you want decimals, also my bad for people cling the wrong answer previously

Terri has a tepee. The tepee has a diameter of 9 feet and a height of 6 feet. What is the volume of the tepee to the nearest foot?

Answers

Answer:

yuop

Step-by-step explanation:

sdfghmnfv tnymu nhghbergfhthetdhtrsdfbgtgtsghrt

Write the equation of the line in slope-intercept that has passes through the points and (5,-9). (-8, 4)​

Answers

Answer:

y = -x - 4 and/or x + y = -4

Step-by-step explanation:

(x,y) is helpful

Jen has 1 chocolate bar she is sharing with her friend, Joe. Jen takes 2/3 of Joe’s piece. What’s Joe’s current piece?

Answers

Answer:1/3

Step-by-step explanation:

If Jen has 1 chocolate bar means that he has 3/3 whole .If he gives 2/3 then he will be left with 1/3 part of the chocolate bar.

Factor completely and check your answer:
Help!

Answers

Answer:

The expression x² + 8x + 7 can be factored out as (x + 7)(x + 1).

Step-by-step explanation:

You can see how this factors by looking at the last term, and the coefficient of the second term.  You need to find two numbers that multiply to make seven, and add to make eight.

Because seven is a prime number, this becomes very easy.  If this works at all, the numbers must be seven and one.

And lo, if you check, seven and one do indeed add up to be eight, so that's what we need to use.  Let's do it:

x² + 8x + 7

= x² + x + 7x + 7

= x(x + 1) + 7(x + 1)

= (x + 7)(x + 1)

If a cook works 38 hours in one week and 36 hours the next week, what is the total number of hours worked by the cook in the two-week period? If the cook gets paid $10.50 per hour, what will be his gross pay (before taxes) for the two-week period?

Answers

435

Step-by-step explanation:

38+36 x10.50=435 gross pay

Celia bought a bag of 12 goldfish for $3. What is the cost of 1 goldfish?

Answers

12 goldfish = $3
1 goldfish = $?
Cross multiple
1(3) / 12 = 0.25
=> 1 goldfish is $0.25 or 25 cents

3000 people own a car, 1650 said they would buy it again, what percent of the people surveyed were satisfied with the car

Answers

the answer would be 55%
55% of people were satisfied with the car

12 ÷ 4 x ___ = 12

im so confused on this question can you guys help

Answers

Answer:

Step-by-step explanation:

12/4 = 3

3 x 4 = 12

4 is the answer

6. In Rectangle DEFG DE=7. EF=3 FG = 7, and DG = 3
6
In Rectangle MNOP, MN=7, NO = 3. OP=7, and MP=3
Can Rectangles DEFG and MNOP be classified as similar, congruent
both or neither? Explain

Answers

Answer:

5

Step-by-step explanation:

What is the product of 3 x 5? Is the answer positive or negative?

Answers

Answer:

The product is 15. The answer is positive.

Step-by-step explanation:

The product of two numbers is the two numbers multiplied together. When two positive numbers are multiplied, the answer would be positive.

3 × 5 = 15

Determine which quadrilaterals match the figure: parallelogram, rhombus, rectangle, or square? Select all
that apply.
w
IZ
Given: m 2WXY = 130°, m XWZ = 50°,mZWZY = 130°
B
rectangle
parallelogram
D
rhombus
square

Answers

Answer:

(A) Parallelogram is the right answer.

I need help trying to determine the missing angle

Answers

Which angle is it asking for?!
Angle A is 53
Angle B is 37

Apartment buildings are required to have a fire extinguisher (extintor de incendios) every 600 feet. If a building has a total of 13,500 feet, how many fire extinguishers are needed?

Answers

Given:

Apartment buildings are required to have a fire extinguisher every 600 feet.

Height of building = 13,500 feet

To find:

The number of fire extinguishers are needed.

Solution:

Building needs a fire extinguisher every 600 feet.

Height of building = 13,500 feet

So, required number of fire extinguishers is

[tex]n=\dfrac{\text{Total height of building}}{600}[/tex]

[tex]n=\dfrac{13500}{600}[/tex]

[tex]n=\dfrac{135}{6}[/tex]

[tex]n=22.5[/tex]

Number of fire extinguishers cannot be negative.

[tex]n\approx 23[/tex]

Therefore, 23 number of fire extinguishers are needed.

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