Mathematics College

Substitution method. Help!

Answers

Answer 1

Answer:

(2, 2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Terms/CoefficientsCoordinates (x, y)Solving systems of equations by substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 3x - 4

2y = -x + 6

Step 2: Solve for x

Substitution

Substitute in y: 2(3x - 4) = -x + 6[Distributive Property] Distribute 2: 6x - 8 = -x + 6[Addition Property of Equality] Add x on both sides: 7x - 8 = 6[Addition Property of Equality] Add 8 on both sides: 7x = 14[Division Property of Equality] Divide 7 on both sides: x = 2

Step 3: Solve for y

Substitute in x [Original Equation]: y = 3(2) - 4Multiply: y = 6 - 4Subtract: y = 2

Related Questions

Are the ratios 3:6 and 1:2 equivalent?

Answers

Answer:

yes these are equivalent bcz

3/6=1/2

Step-by-step explanation:

PlZ make me brainliest

Answer:

Yes

Step-by-step explanation:

3/6= 0.5

1/2= 0.5

3.663 to the nearest tenth of a ounce

Answers

Answer:

3.7 ounces

Step-by-step explanation:

You just need to round to nearest 10th place, which is just next number after decimal. Hope it helps ;)

there is a sales tax of $22 on an item that costs$272 before tax. the sales tax on the second item is $19.25 how much does the second item cost before tax

Answers

Answer:$240.62

Step-by-step explanation:

You divide 22/272 to get .08 then you divide 19.25 by .08 to get 240.62.

in a major study by the statistics classes at Washington High School, city parking spaces were examined for compliance with the requirement to put money in the parking meters. Overall, the students found that 76% of metered parking places had meters that had NOT expired, and 24% had meters that were expired. If the traffic officer in charge of ticketing cars with expired meters checks meters at random, what is the probability he will find an expired meter BEFORE the 3rd one

Answers

Answer:

0.4224 = 42.24% probability he will find an expired meter BEFORE the 3rd one

Step-by-step explanation:

For each car, there is a 24% probability that it had expired parking meters.

What is the probability he will find an expired meter BEFORE the 3rd one?

Three possible outcomes:

Two expired(each with 24% probability)

First expired(24% probability) and second not(76% probability)

First not(76% probability) and second expired(24% probability). So

[tex]p = 0.24^2 + 2*0.24*0.76 = 0.4224[/tex]

0.4224 = 42.24% probability he will find an expired meter BEFORE the 3rd one

Grace created the net worth statement shown.
Based on the information in the statement, what is
Grace's net worth?
Net Worth Statement
- $46,600
Assets
Value
House (current value)
$125,000
® - $94,000
Investments
$12,000
Savings account
$3,600
$46,600
Total Assets
$140,600
D$234,600
Liabilities
Credit card debt
$7,500
Mortgage
$86,500
Total Liabilities
$94,000

Answers

Answer: 46,600

Step-by-step explanation:

Hii, Ok so basically I really need help with these questions they are really difficult and don't worry there are plenty rewards. On the last question whoever give the right answer and is the quickest will get brainiest. But do not worry whoever answers this question will get a
1. Thank you *heart*
2. 5 star rating
3. Comment
4. And 10 points

So you may be wondering what the question is well take a look oh and by the way please do not give a random answer and its a maths question

A, B, and C lie on a straight line.
Given that angle y= 118 degrees and angle z =107 degrees work out x.

Answers

Step-by-step explanation:

m∠B = 180° - y°

= 180° - 118°

= 62°

x° = 180° - (m∠B + z°)

x° = 180° - (62° + 107°)

x° = 180° - 169°

x° = 11°

i don't know, it was correct or no. Because i thought this question is looking for the valuable of x.

#CMIIW

a number added to one third of itself equals 12 . what is the number

Answers

Answer:

Step-by-step explanation:

x+1/3x=12

(3x+1x)/3=12

4x/3=12

4x=12×3

4x=36

x=36/4

x=9

Answer:

1/3+x=12(cross multiply)

x+1=12*3

x+1=36(collect like terms)

x=36-1

x=35

I need help with this one.

Answers

9514 1404 393

Answer:

1,563.5 in³904.8 yd³2,144.7 mm³1,288.2 cm³434.9 in³

Step-by-step explanation:

The formula for the volume of a sphere is ...

V = (4/3)πr³

When you have several of these calculations to do, it is convenient to let a graphing calculator or spreadsheet do them. A spreadsheet can do the rounding for you, too. The results are attached. The units are the cube of the units of the radius.

Example calculation:

(4) Radius = diameter/2 = 13.5 cm/2 = 6.75 cm

V = (4/3)π(6.75 cm)³ = 4.18879 × 307.547 cm³ = 1288.2 cm³

Note that the constant (4/3)π ≈ 4.18879 remains the same for each calculation. All you need to do is multiply that by the cube of the radius.

Solve the system of equations by elimination

3x + 5y = 16
2x - y = 2

Answers

Answer:

the answer is 2

Step-by-step explanation:

Solve the systems of equation by elimination.

x + 5y = -7
2x + 7y = -8

Answers

2x-7y=-6 but x = 5y , so

2(5y) - 7y = -6

PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

bndflvb

Step-by-step explanation:

what fraction does not belong?

8/12

6/12

2/3

4/6

Answers

Answer:

2/3

Step-by-step explanation:

because if you do 12 divided by 8 =1.15 and all the other one is 1.5 except 2/3

What is the value of 8 in 293,581?

Answers

Answer:10th place

Step-by-step explanation:

the measurement is 4 and 6 what is the perimeter.

Answers

Answer:

P=16 cm.

Step-by-step explanation: it is 16 inches

Answer:

To find the perimeter, you do 2 x length + 2 x width

So it would be, 2x4 + 2x6 = 20 inches

You didn't measure properly!!!

Personally, I think you meant to write 3 and 5, that would make 16

The mass of a dust particle is approximately 7.5 x 10 –10kilograms and the mass of an electron is 9.1 x 10 –31kilograms. Approximately how many electrons have the same mass as one dust particle?

Answers

Answer:

(7.5 x 10-10 kg) / (9.1 x 10-31 kg) ≅ 8.24 x 1020

Step-by-step explanation:

Divide the mass of one dust particle by the mass of one electron, and that will be your answer.

(7.5 x 10-10 kg) / (9.1 x 10-31 kg) ≅ 8.24 x 1020

Identify the slope. Remember slope is a ratio.
y ={2}{3}x + 8

Answers

9514 1404 393

Answer:

2/3

Step-by-step explanation:

Assuming your equation is supposed to be ...

[tex]y=\dfrac{2}{3}x+8[/tex]

the slope is the coefficient of x.

The slope is 2/3.

Find the voulume of a sphere. With a radius of 1/2

Answers

Answer:

Volume ≈ 0.5236

Step-by-step explanation:

V=4/3πr3=4/3·π·0.53≈0.5236

The other persons right and if you have trouble just put it in a calculator and divide

Find two integers whose sum is 16 and product is 64

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

You have three vegetable pizzas of the same size One has 4 equal slices. The second has 8 equal slices. The third has 6 equal slices. You cut the pizzas until all of them have the same number of slices. How many slices does each pizza have?

Answers

Answer:

Step-by-step explanation:

Can someone answer this please!!! I only have 5 mins and u will get Brainly too :)

Answers

Answer:

a) 12cm

b) 3cm

c)12cm

brainliest plzz

Answer:

Answer for a)12 b)3 c)12

Step-by-step explanation:

a)12 b)3 c)12

what is the rounded number of 305?

Answers

Answer:310

Step-by-step explanation:

what are you rounding it to ?

Mr Jenkins is tiling a square floor.
He uses 196 square tiles.
Work out how many tiles are in each row.

Answers

I believe it’s 49. because you would divide the sides of a square which is 4 by how many square tiles he uses which is 196.

Jasper used a 30 day same as cash loan to purchase a new $325 TV stand. The
interest rate on the loan is 18%. Jasper made 3 payments of $75 and another
payment for $100.

Answers

A. I am a fan of the blue green

What is 75% of 162? Show your work and/or explain your reasoning.

Answers

Answer:

121.5

Step-by-step explanation:

75% = 75/100

Step 2 - Mutiply percenatge fraction by the entire (100%) quantity

75/100× 162 = 121.5

Final result

75 percent of 162 is 121.5

Answer:

121.5

Step-by-step explanation:

| percantage x 100% |

75/100 x 162 = 121.5

Please help me with the last mat problem this very hard for me to undestand please anyone

Answers

Answer:

Maybe it looks like this?

Step-by-step explanation:

state whether the number is a solution to the given inequality

7/12 > 9/16

Answers

Answer:where the numbers ? like a.3,b.5 somethin like that

Step-by-step explanation:

but its True

7/12>9/167

0.583333>0.053892

true

5th grade math. correct answer will be marked brainliest.

Answers

Hopes this helps:

Answer:

12 1/3

Answer:

7 1/3

Step-by-step explanation:

The answer is in the simplest form already.

Rewrite the equation:

2 + 1/2 - 9 - 5/6

2 - 9 = -7 (negative 7)

1/2 minus 5/6 = ?

Find LCD of 1/2 and 5/6 and rewrite to solve.

3/6 is the LCD, so:

3/6 - 5/6 = -2/6

-2/6 = -1/3

So, the answer is:

-7 -1/3 = 7 1/3

Mark brainliest please!

:DDDD

Please answer this question ASAP

Answers

Answer:

Budgins.

Step-by-step explanation:

Waitroze is selling the cans of soup for 1.27 more than Budgins. So, therefore, Budgins has a WAY better deal than Waitroze.

hi, if your looking for extra points (50+) and brainiest here is ur chance, answer this question correctly plz

Answers

Answer:

The y-intercept is -4.

Explanation:

The y-intercept is between -2 and -4 so its actually on -3

Answer:

The y-intercept is -4. This one is false.

Step-by-step explanation:

The slope is positive.

The point (8, 2) is on the line.

The y-intercept is NOT -4. The y-intercept is -3.

The line does not go through the second quadrant.

does ''-3.5 · 12" equal ''-42 "?

Answers

it actually equals-42.50 i believe

Answer:

i think they equal

Step-by-step explanation:

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