Mathematics High School

solve the simultaneous linear equations by using the elimination method

a - b = -3
3a - 4b = -5

Answers

Answer 1

Answer:

3a -3b= -9

3a - 4b = -5

-------------------

b=-4

4a- 4b= -12

3a - 4b = -5

-------------------

a = -7

Related Questions

Calculate how many guesses in binary search algorithm.

Answers

Answer:

In the case of a decimal number, we round down to find the actual number of guesses. Therefore, for a 1000-element array, binary search would require at most 10 guesses. (which is 2,097,152), so we would need at most 22 guesses.

Step-by-step explanation:

how many significant figures are in the number 0.3368?

Answers

Answer:

4 significant figures are in the number 0.3368

A series whose first two terms are -12 to -8 respectively and whose last term is 124

Answers

Answer:

first two terms are 6 and 3

Step-by-step explanation:

yuh <3

Me podrian ayudar con estas equaciones de 2º grado pliss?
[tex]x^{2} +2x-15=0[/tex]
[tex]x^{2} -4x- 12=0[/tex]
Thankss

Answers

Step-by-step explanation:

Las ecuaciones dadas son ,

=> x² + 2x -15 = 0

Y necesitamos encontrar la solución de la Ecuación dada.

=> x² + 5x -3x -15 = 0

=> x(x+5) -3(x+15) = 0

=> (x+5)(x-3) = 0

=> x = 3,-5

La segunda ecuación es,

=> x² -4x -12 = 0

=> x² -6x+2x-12=0

=> x(x-6)+2(x-6) = 0

=> (x+2)(x-6) = 0

=> x = 6,-2

Espero eso ayude :)

What is a limit in calculation.

Answers

Answer:

I think this was what you was looking for; The limit is the value of the function approaches as the input approaches mentioned value. Limits are used as a way of making approximations used in the calculation as close as possible to the actual value of the quantity. Let us understand the limit formula in detail in the following section.

Step-by-step explanation:

Shamaya gave away 6 bags of chips. She now has 17 bags of chips left in her bag. How many bags of chips did she have originally?

Answers

Answer:

Step-by-step explanation:

She originally had 23 because if she gave away 6 bags of chips, she would have 17 left

17+6=23

double check answer:

23-6=17

Answer:

the answer is 23

Step-by-step explanation:

17+6=23

so she 23 bags of chips

here is a list of numbers: 12, 13, 19, 16 ,32, 15, 13.a)work out the range of the numbers in the list.b)work out the mean of the numbers in the list

Answers

Answer: Mean: 17.14 Range: 20.

Step-by-step explanation: 12+13+13+15+16+19+32 25+13+15+16+19+32 38+15+16+19+32 53+16+19+32 69+19+32 88+32 120/7 17.14

32-12 20

evaluate the function h(x) = |-2x|-9 for the given values of x a) h(4)=. b) h(-5)=. c) h(0) =

Answers

Answer:

h(4) = -1 ; h(-5) = 1 h(0) = -9

Step-by-step explanation:

a) h(x) = |-2x| - 9 Substitute x = 4

h(4) = | -2 · 4| - 9

h(x) = | -8| - 9

h(4) = 8 - 9

h(4) = -1

b) h(x) = |-2x| - 9 Substitute x = -5

h(-5) = |-2 · -5| - 9

h(-5) = |-10| - 9

h(-5) = 10 - 9

h(-5) = 1

c) h(x) = |-2x| - 9 Substitute x = 0

h(0) = |-2 · 0| - 9

h(0) = |0| - 9

h(0) = 0 - 9

h(0) = -9

Rabbitton has 34 rabbits for every 8 gardens. Rabbit Ville has 48 rabbits for every 14 gardens. Which town has more rabbits per garden?

Answers

Rabbitton: 34 / 8 = 4 1/4

Rabbit Ville: 48 / 14 = 3 3/7

Rabbitton has more rabbits per garden

Please can someone help with rearranging formulae? Will mark brainliest!

Answers

Answer:

look at the picture ..........

you are skateboarding at a pace of 30 meters every 5 seconds. your friend is in-line skating at a pace of 9 meters every 2 seconds. graph each ratio relationship in the coordinate plane

(im in 6th grade)

Answers

In order to graph the relationship, we will need to write the expression as the equation of a straight line as shown:

d = mt + b

d is the distance covered

t is the time taken

m is the speed

If you are skateboarding at a pace of 30 meters every 5 seconds. your friend is in-line skating at a pace of 9 meters every 2 seconds, this can be written as (5, 30) and (2, 9)

Get the slope of the line:

m = (9-30)/(2-5)

m = -21/-3

m = 7

Substitute m = 7 and the coordinate (2, 9) into the equation y = mt + b

9 = 7(2) + b

9 = 14 + b

b = -5

The required equation to plot will be expressed as y = 7t - 5

Plot the required graph

Learn more here: https://brainly.com/question/17003809

-10+2= (operation of integers)

Answers

Answer:

-8

Step-by-step explanation:

Hi there! :)

-10+2=-8

Hope this helps!

~Just a determined gal

#CarryOnLearning

Please mark brainliest; I would really appreciate that! :)

[tex]MysteriousNature :)[/tex]

14^6 ÷ 14^4 please :)

Answers

Answer: 196 :)

Step-by-step explanation:

Answer:

196

follow pemdas (exponents first)

In the middle school debate club, 60% of the members are in sixth grade. If there are 18 sixth graders in the debate club, how many total members are there? Which types of lifts require spotters?

Answers

Answer:

Step-by-step explanation:

take 60% of 80, or 80 x .6

the choices for the first one is either x values or y-values

Answers

Answer:

x values

division

Step-by-step explanation:

Vertical lines are all "rise" and no "run"

therefor the difference in x values is always 0

division by 0 is undefined

Answer: y- values

Step-by-step explanation:

Find the area of triangle PQR.

Answers

Answer:

70°

Step-by-step explanation:

Since PTS shape is equal to QTR

and PTQ shape is equal to STR

and Since QTP = 10

and Since PTS = 60

Add both up 70

Therefore PQR = 70°

You call two car rental companies to find out their rental prices Company A charges $75 plus $.30 per mile and Company B charges $80 plus $.25 per mile. If you are traveling 150 miles, which company gives you the better deal?

Answers

Company A= 75+•30x150=120
Company B= 80+•25x150=117.50
Altogether company A gives the better deal at $117.50

Ill reward you a bounty of 100 points! plus brainiest if you are the first one to answer my question:

Part 1
Write your own real-world scenario where the Pythagorean Theorem can be applied to find a missing piece. You may choose to write a problem that is two- or three-dimensional in nature. Be sure that you will be able to draw a diagram of your scenario.

Write out your problem and submit it for Part 1. Be sure to end your scenario with a question.

Part 2
Draw a diagram of the scenario you created in Part 1. You may draw by hand and scan and upload your drawing or create a computer-generated drawing for submission. Be sure to label all parts and dimensions of the drawing.

Part 3
Solve the question that you posed in Part 1. Show all of your steps in answering the question.

For this option, you will need to submit all three parts for full credit—your real-world problem and question, the diagram that you created, and your work solving the problem, showing all steps.
*Please note that your instructor is looking for your own original idea. While it is acceptable to use the Internet for research and inspiration, academic integrity policies apply.

Answers

Answer:

The real-world scenario is given as: A yacht traveling 20 miles due east off a harbor is located 50 miles due north from the yacht

Recall:

Pythagorean Theorem applies to a right triangle where and c is the hypotenuse.

If we know the two of the three side lengths of a right triangle, we can find the other third length.

An example of a scenario where the Pythagorean Theorem can be applied to solve a real-world problem can be sketch in a diagram

Therefore:

The real-world scenario is given as: A yacht traveling 20 miles due east off a harbor is located 50 miles due north from the yacht

Step-by-step explanation:

#Nova

Have a good day

A fisherman has 420 crabs. He sold one tenth of the crabs for a party. Then he sold two-thirds of the remaining crabs to a restaurant. The fisherman estimates that he has 232 crabs left. How far off is the fisherman's estimate?

Answers

Answer:

The answer I'd 28464835383637533

Carey Enterprises sold equipment on January 1, 2014 for $10,000. The equipment had cost $48,000. The balance in Accumulated Depreciation at January 1 is $40,000. Requirements: 1. Compute the gain or loss on sale 2. Prepare journal entries to record the sale of the equipment

Answers

The sale of an equipment is referred to as disposal of an asset. The required answers are:

1. Gain on disposal = $2000

2. Journal entry for the disposal of the equipment.

Dr Cr

$ $

Cash acct. 10000

Asset 8000

P or L 2000

Disposal of an asset implies the sale of a plant, property, or equipment. This would ensure the recovery of the carrying amount of the item during sale.

1. The gain or loss on sale of the equipment can be determined by deducting its carrying amount from its recoverable amount.

Thus, to determine the gain or loss on disposal;

$'000

Cost 48

Accum. Depreciation 40

Carrying amount 8

Gain or loss on disposal = Selling price - carrying amount

= $10000 - $8000

= $2000

The gain on disposal is $2000.

2. Dr Cr

$ $

Cash acct. 10000

Asset 8000

P or L 2000

For more on disposal of asset, check: https://brainly.com/question/24098024

The sales tax rate is 10% if ruby buys a toaster priced at 34.72 what will be the total cost including tax

Answers

Answer:

38.192

Step-by-step explanation:

34.72x(1+0.1)=38.192

2) Find the area and perimeter of a semi -circular disc whose radius is 10cm. (take π = 3.14)

Answers

Answer:

Area =Pi r2

=3.14×10x10

=3.14×100cm2

=3.14cm2

Perimeter = 2 pi r

=2 ×3.14×10

=6.28cm

Or =Pi d

= 3.14 ×20cm

=62.8cm

Note:

R means radius

D means diameter

radius is half of a diameter e.g radius is10 and diameter is 20

I can recommend you watching yt videos it helped me alot

hoo this helps:)

Erika is going to the store to buy a gallon of milk and some apples. The gallon of milk costs $3.50 and apples
cost $1.50 per pound. Use this information to complete the table, create a graph, and write an equation that
represents Erika’s total cost, C, of buying the milk and a pounds of apples.

Answers

Answer:

C = $5.00

Step-by-step explanation:

C = $5.00 because IF Erika gets 1 pound of apples they would cost $5.00

$3.50

+ $1.50

______

$5.00

I am so srry for not being specific.

A phone is regularly priced at $350. If you get it on sale for 15% off, how much do you pay?

Answers

52.5

Explanation:
x/18. 30/100 cross multiply 30*18=5250
5250 divided by 100= 52.5

The answer is 52.5 because once you divide 5250/100 then you get 52.5

The seventh grade class is raising money to have a class trip at the end of the year. They began the year with $2,500. Now they have 54.750 in the account. What is the percent increase for the money the
dass has raised? The dass figured out that if there is a percent increase of 99% from the beginning of the year, they will have enough to pay for every student. How much money wil they need to pay for every student?
The percent increase is
They will need to pay for every student?

Answers

Answer:

21.6%

Step-by-step explanation:

help ? yes ? no ? maybe

Answers

This is a maybe help m friend.
The cost are proportional but i will never graph that for you!!! ψ(｀∇´)ψ

Solve the system of equations using substitution.
X + y = 13
x - y = 5
Please help

Answers

Answer:

x=9

y=4

Step-by-step explanation:

Please help fast i will mark you if you get it right

Answers

Answer:

6/1 * 2/3= 4

5/6 - 3/4= 1/12

3/5 / 1/3= 9/5

Step-by-step explanation:

The Snyders went out to dinner and their bill was $54.15. How much would a 20% tip cost?

Answers

Answer:

$10.83

Step-by-step explanation:

bill/percent

The tip total would be $10.83. The total (bill plus the tip )would be $64.98.

You have of a pizza left from yesterday. You divide it into 4 equal pieces. What fraction of the pizza is each piece?

Answers

1/4, i hope this helps :)

Answer:

1/4

Step-by-step explanation:

because there are 4 people and one pizza ....diuviding it into 4 means everyone gets a quarter

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solve the simultaneous linear equations by using the elimination method​a - b = -33a - 4b = -5

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solve the simultaneous linear equations by using the elimination method

a - b = -3
3a - 4b = -5