Mathematics High School

Question Details
Solve
-4x – 6y = 0
-6x- 12y = 18

Answers

Answer 1

Answer:

x = 9

Step-by-step explanation:

-6x -12y = 18

multiply -4x -6y = 0 by -2 to get 8x + 12y = 0

the 12y's cancel out and you combine the equations to get 2x = 18

2x/2 = 18/2

x = 9

Related Questions

what is the slope of this line ?

Answers

Answer:

1 I think

Step-by-step explanation:

Change in y

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

Change in x

The slope is 1/1 because it moves across and up or down 1 column at a time

(-3)^4 in expanded form

Answers

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[tex] ({ - 3})^{4} = ( - 3) \times ( - 3) \times ( - 3) \times ( - 3) \\ [/tex]

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Answer:

3x3x3x3

Step-by-step explanation:

1. 4 is the exponent so you would put down (-3) 4 times but, since the -3 is in parentheses it automatically becomes positive.

2. So, instead of writing (-3)x(-3)x(-3)x(-3) or -3x-3x-3x-3 you would write 3x3x3x3.

I hope this helps:)

I don't understand this at all.

Answers

Answer:

i think the answer is A

Step-by-step explanation:

Find the area A of the polygon with the given vertices.
A(7,0).B(10,0). C(10,-1). D(7,-1)
square units

Answers

Answer:

9

Step-by-step explanation:

no

What value of k makes the statement true?



K-12=6+(-12)

-18
-6
6
18

Answers

Answer:

6

Step-by-step explanation:

The Official Answer is C. 6

What is 10 to the 5th power times 456

Answers

Answer:

45,600,000

Step-by-step explanation:

10 to the 5th power is 100,000 times 456 which is 45,600,000

Correct me if I am wrong

Hope this helps!

Given the two points determine the equation of the line.


A(2,5); B(4,9)
y=-2x + 1
O y = 2x +1
O y = -2x - 1
O y = 2x-1

Answers

the answer is y= 2x + 1

PLEASE HELP I WILL MARK

Answers

Answer:

2. 5

3. 2 dollars a peice

that is all i know sorry

Step-by-step explanation:

hope it heps you

Answer(s):

5 miles per hour

2 dollars per battery

6 pages in a minute

10 miles per gallon

2 inches per hour

Step-by-step explanation:

30/6=5

24/12=2

40/8=6

60/6=10

16/8=2

The probability of rain for Monday is 40%. The probability of rain on
Friday is 20%.
What is the probability that it rains both days?

Answers

52 percent as 0.4 + 0.2 - 0.08 = 0.52

Answer:

52% is that an answer?

Step-by-step explanation:

Solve for X, and show the equation you would use to solve.

Answers

Answer:

x=10

Step-by-step explanation:

Answer:

(7x+40) + (3x+80)=180

Step-by-step explanation:

x=6

rewrite the linear equation 2x=1/3y-9 in slope- intercept form.
y=. x. +

Answers

Answer:

y = 6x + 27

Step-by-step explanation:

The required linear equation would be y = 6x + 27 in the slope-intercept form.

What is a Linear Function?

A linear function is defined as a function in the form of f(x) = mx + c where 'm' and 'c' are real numbers.

It represents the line's slope-intercept form, which is written as y = mx+ c.

Linear equations can be solved in four different ways: by adding, subtracting, multiplying, and dividing.

The linear equation is given in the question

⇒ 2x = (1/3)y - 9

We have to rewrite the equation in the slope-intercept form.

⇒ 2x = (1/3)y - 9

Multiply by 3 both sides of the above equation,

⇒ 6x = y - 27

Rearrange the term of y to get

⇒ y = 6x + 27

Therefore, the required linear equation would be y = 6x + 27 in the slope-intercept form.

Learn more about the Linear equations here:

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A plane can carry 360 passengers. On a particular day, there are 240 passengers on the plane. Identify the correct inequality and the solution to show how many more passengers the plane can carry?

Answers

Answer:

p + 240 ≤ 360; p ≤ 120

Step-by-step explanation:

The inequality that shows the number of more passengers to carry by plane is 240 + x = 360.

The number of more passengers is 120.

What is inequality?

It is a statement of an order relationship

- greater than,

- greater than or equal to,

- less than,

- less than or equal to between two numbers or algebraic expressions.

We have,

Number of passengers in a plane = 360

Number of passengers in a day = 240

The inequality represents the number of more passengers that can carry:

240 + x = 360

Where x is the number of more passengers.

Find x.

240 + x = 360

Subtract 240 on both sides.

240 + x - 240 = 360 - 240

x = 120

Thus,

The inequality that shows the number of more passengers to carry by plane is 240 + x = 360.

The number of more passengers is 120.

Learn more about inequality here:

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x + (2x + 40) + (3x – 50) = 15,002

Answers

Answer:

2497.22...

Step-by-step explanation:

Answer:

x + (2x + 40) + (3x - 50) = 15002

Remove the parentheses

x + 2x + 40 + 3x - 50 = 15002

Combine like terms

x + 2x + 3x + 40 - 50 = 15002

6x - 10 = 15002

6x = 15002 + 10

6x = 15012

x = 15012/6

x = 2502

Step-by-step explanation:

Hope it helps :)

Brainliest pls?

Paulo's grandfather gave him a collection
of 20 coins. Each month Paulo adds 4 coins to his collection. Which inequality can be used
to find m, the number of months after starting
his collection when Paulo will have more than 50 coins in his collection?

Answers

Answer:

20 + 4m >50

Step-by-step explanation:

which subtraction expression does the number line model show ​

Answers

Answer:

13-+4

Step-by-step explanation:

Find the equation of the line shown.

Answers

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First we need the slope which is finding from the following equation.

slope = y(B) - y (A) / x (B) - x(A)

Suppose ;

A = ( 0 , 0 ) & B = ( 10 , 5 )

Thus :

slope = 5 - 0 / 10 - 0

slope = 5 / 10

slope = 1 / 2

__________________________

We have following equation to find the point-slope form of the linear functions.

y - y(0) = s × ( x - x(0) )

__________________________

y(0) & x(0) are the coordinates of the point which line through it like A = ( 0 , 0 ) or B = ( 10 , 5 ).

s = slope

__________________________

I choose point A to put in the equation.

So :

y - ( 0 ) = 1/2 × ( x - ( 0 ) )

y - 0 = 1/2 × x - 1/2 × 0

y = 1/2 × x

y = x/2

Done....

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

) The price of a watch is marked Rs 11,250. When it is sold allowing 20% discount,
20% profit is made. By what percent is the discount to be reduced to increase the
profit by 3%?​

Answers

Step-by-step explanation:

the first step is to find the cost price

when 20% discount=

11250*80/100= 9000

the 20% discounted price is 9000

there is still a 20% profit in this 20% discount

so Cost.Price *120/100=9000

Cost price= 7500

now its asking for discount percentage at 3% profit so first calculate price after 3% profit

7500*103/100= 7725

so discount on rs11250 required to produce 3% profit=

11250*x/100=7725

x= 68.7% discount

Given two points on a line, explain how you can use point-slope
form to write an equation of the line.

Answers

To find the point slope of a line you must first know the slope of the two points. You would substitute the points into the slope formula y2-y1/x2-x1.

Then you would put the slope into the point slope formula:

y-y1=m(x-x1)

"m" is the slope of the formula.

Hope this helped.

PLEASE HELP QUICKLY: (FIRST ANSWER GETS BRAINLIEST) 93 POINTS


From the grocery store you need to purchase 1/2 lb cheese, 3 lbs sliced ham, 2 loaves of bread, 4 bags of potato chips, and 1 container of salsa. You have a coupon for $4.00 off if your purchase totals more than $15.00 or 10% off if the total is more than $20.00. The food sales tax is 3%. What is the total cost of the groceries after the best discount is given and taxes applied?


Item Cost

Cheese $1.99/lb

Sliced Ham $3.29/lb

Bread $1.59/loaf

Potato Chips $1.99/ea OR 2 for $3.00

Salsa $1.39/container




$17.96





$21.44





$16.86

Answers

the answer is letter b

what id the greatest common factor shared by 24 and 54

Answers

Answer:

6.

Step-by-step explanation:

A certain middle school opens at 7 A.M., and classes begin at 8 A.M. A sociologist gathered data on the number of minutes after 7 A.M. that a student arrives at school and the number of friends the student has on social media. The correlation between the two variables indicated a strong negative relationship. Which of the following is an appropriate interpretation of the correlation?

Answers

Answer:

As the number of minutes of arriving after 7 A.M. increases, the number of friends on social media tends to decrease.

Step-by-step explanation:

Correlation does not imply causation. Also, the negative relationship indicates that as the number of minutes of arriving after 7 A.M. increases, the number of friends on social media tends to decrease.

Arthur bought a life insurance policy at $10.98 per month for a 20 year term. What will he pay over 20 years for the premium?

A. $2,830.00
B. $988.20
C. $1,800.00
D. $2,635.20
​

Answers

D is the right answer

A. $2,830.00 He will pay 2,830.00 for the premium.

Which of these is the answer please.

Answers

answer: the first one

Insert parentheses to make the following number sentence true. 1+2×3×4=28

Answers

Answer:

Your answer should be

(1+2*3)*4=28

have a great day!

Insert parentheses to make the number sentence true will be [1 + (2 × 3)] × 4 = 28.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

The equation is given below.

1 + 2 × 3 × 4 = 28

Insert parentheses to make the number sentence true will be

[1 + (2 × 3)] × 4 = 28

[1 + 6] × 4 = 28

7 × 4 = 28

28 = 28

Insert parentheses to make the number sentence true will be [1 + (2 × 3)] × 4 = 28.

More about the Algebra link is given below.

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Car x travels 174 miles in 3 hours

What equation describes this relation

Answers

Using the speed - distance relationship, the speed of the car is 58 miles per hour.

Recall the equation to calculate the miles per hour :

Speed = (distance ÷ time)

Distance moved = 174 miles

Time taken = 3 hours

The speed of the car in miles per hour can be calculated thus :

Speed = (174 ÷ 3) = 58 miles per hour.

Therefore, the speed of the car in miles per hour is 58 miles per hour.

Learn more : https://brainly.com/question/14429071

What is 3/16 times 3/8? Someone pls help me

Answers

Answer:

Step-by-step explanation:

3/16*3/8

3*3=9

16*8=128

9/128

Answer:

9/128

Step-by-step explanation:

Need help on these 2 questions please??? 14 points ?

Answers

Answer:

8 is congruent 9 isnt

Step-by-step explanation:

Answer: 8. is Congruent and 9. Isn't Congruent

Step-by-step explanation:

Find the prime factorization of 24. Make sure to show all of your work.

Answers

Answer:

2^3*3

Step-by-step explanation:

So the prime factorization of 24 is 24 = 2 · 2 · 2 · 3 = 23 · 3.

Answer:

2^3*3

Step-by-step explanation: So the prime factorization of 24 is 24 = 2 · 2 · 2 · 3 = 23 · 3.

Help plsss! What is the the complete statement of 12(3+5)=__x 3__x 5

Answers

Answer:

96

Step-by-step explanation:

12(3 +5) =12 ×3 +12 ×5 =36 +60 =96

Question and answers r in the pic

Answers

Answer:

on khan

Step-by-step explanation:

don't know answer. too much questions in that question

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