Mathematics High School

9x + 3y = -15
-18x - 6y = 30
X = ?
Y = ?

Answers

Answer 1

Answer:

I dont know why the answers are the same thats how i got the answer solving them

Step-by-step explanation:

answer for 9x+3y=-15  

is

x=-5/3 -y/3

y= -5 - 3x

answer for -18x-6y=30

is

x=-5/3 - y/3

y= -5-3x

Related Questions

Help need badly please

Answers

Answer:

6

Step-by-step explanation:

subtract 2 from2 equal zero

add 2and 4 together get six

zero divided by any non-zero number gives zero

multiply 3 times 4 gets 12

0+12/2

divide 12 by 2 equal six

0+6

zero 0 and 6 to get 6

6

What is the difference in the areas of the polygons shown?

Answers

Answer:

the difference is the + and the -

sorry if it's wrong

i need help fast plz!!!

Answers

Answer:

26, 64

Step-by-step explanation:

we have :

angle 90°

acute angle x

acute angle 2(x+6)

The sum of the angles in a triangle has to be 180° so

90 +x+2(x+6) = 180

90 +x +2x+12 = 180

3x = 180 -90-12

x= 78/3 = 26°

the other acute angle is 2(26+6) = 64°

Answer:

26, 64

Step-by-step explanation:

We can name the first acute angle x and the second acute angle y. We know that x=2(y+6) but we also need another equation to solve the problem. Since we know that the sum of angles in a triangle is equal to 180 degrees and this is a right triangle, the two acute angles sum will be equal to 90 degrees. That would be our second equation, x+y=90. Now we can just substitute the first equation into the second one: 2(y+6)+y=90 -> 2y+12+y=90 ->3y=78 -> y=26

Now we can substitute y into one of the original equations and solve for x: x+26=90 -> x=64

Write the equation of the line given a slope of 0 through the point (5, -7)

Answers

a line with a slope of 0 is a horizontal line
so the equation would be y=-7

Answer:

y=-7x+5

Step-by-step explanation:

Consider the following real-world situations and the integers that represent them. Select all true statements.

A
The integer −22 represents 22 degrees below zero degrees Fahrenheit.

B
The integer −12 represents an atom with a negative charge of 12.

C
The integer −10 represents a gain of 10 yards.

D
The integer 18 represents a deposit of $18.

E
The integer −6 represents 6 feet above sea level.

Answers

The answer is A Because -22 is the opposite of 23

Answer:

the answer is A


C gives the cost, in dollars, of a cafeteria meal plan as a function of the number of meals
purchased, n. The function iſ represented by the equation C(n) = 4 + 3n.
1. Find a value of n such that C(n) = 31 is true.

Answers

Answer:

9

Step-by-step explanation:

First, write the equation.

C(n) = 4 + 3n

We know that C(n) = 31, so we can substitute it.

31 = 4 + 3n

Subtract 4 from both sides to isolate the term with the variable.

27 = 3n

Divide both sides by 3 to get the variable by itself.

9 = n

The value of n such that C(n) = 31 is true is 9

Cost functions

Given the cost in dollars, of a cafeteria meal plan as a function of the number of meals  purchased, n as:

C(n) = 4 + 3n

If the cost value C(n) is 31, hence;

31 = 4 + 3n

3n = 31 - 4

3n = 27

n = 27/3

n = 9

Hence the value of n such that C(n) = 31 is true is 9

Learn more on equations here: https://brainly.com/question/2972832


A fraction is written in simplest form when the GCF of the
numerator and the denominator is

Answers

Answer:

simplified

Step-by-step explanation:

Answer: 1 -- that is, if they share no common factors other than 1

Step-by-step explanation:

Find the Percent:
A computer is marked up from last
year's model by 12%. If the cost last
year was $1150.00; What is the cost
of the new model?

Answers

Step-by-step explanation:

First, find 12 percent of 1,150,

12 percent of 1,150 = 138.

Now, add 1,150 + 138,

1,150 + 138 = 1,288

Hope I helped, if not, at least I tried.

ANSWER PLZ I NEED HELP

Answers

Answer:

5x+12

Step-by-step explanation:

To find the perimeter of a rectangle you just add up all the sides

WHich means that the peremiter equals

(x+2)+(x+2)+(x+4)+(x+4) combine like terms and get

5x+12

Assume that three fifths of the population has long hair and and one tenth of the poulation has blue eyes. What is the probability that a person does not have long but does have blue eyes?

Answers

Answer:

1/25

Step-by-step explanation:

If 3/5 have long hair, then 2/5 do not have long hair

So, the probability of no long hair, has blue eyes = 2/5(1/10) = 1/25


If f(x) = 3x + 1, what is one possible value of x for
which 6

Answers

Answer:

1/3

Step-by-step explanation:

WILL MARK BRAINISETS IF ITS RIGHT PLS ANSWER​

Answers

Answer:

livestock

Step-by-step explanation:

i think

The price of a car is $22,000, the car is marked down $2,000, what percent is the car marked down?
(This means that the price of the car is decreasing by $2000, remember part/whole x 100)

Answers

Answer:

The car is marked down by 9.09090909 %

Step-by-step explanation:

Given

The price of car = $22,000

Markdown amount = $2,000

To determine

what percent is the car marked down

The percent of the car marked down can be determined by dividing the Markdown amount by the price of the car and multiplying the result by 100.

Markdown % = [Markdown amount / The price of car] × 100

                      =[ 2000 / 22000 ] × 100

                      = 0.0909090909  × 100

                      = 9.09090909 %

Therefore, the car is marked down by 9.09090909 %

PLEASE HELP ME I HAVE THIS TEST DUE SOON <3

which equation is perpendicular to y= -2x + 5 ?

A) y= -2x -5
B) y= 2x -3
C) y= 1/2x -2
D) y=-1/2x+1

Answers

Ok so in order for the equation to be perpendicular, the slope have to be opposite of each other.

The original equation had -2 as the slope. The opposite of -2 is 1/2.

When the number is negative, the opposite of it is positive.
And in order for them to be completely opposite, you have to flip the number. So 2 turned into 1/2, since the denominator of 2 is 1.

And so since the opposite slope is 1/2, C is the correct answer.

Put the following fractions in order from GREATEST TO LEAST.
1/2 7/8 3/4 2/2

PLEASE HELP

Answers

Answer:

2/2, 7/8, 3/4, 1/2

Step-by-step explanation:

First you have to change it in to fractions that all have the same denominators. 4/8, 7/8, 6/8, 1

Now you put them in order.  

Can anyone help me please thank you if you do

Answers

Hai!

Your answer should be A.

So so sorry if I am Wrong.

Have a good day! :3

SOMEONE HELP ME PLEASE ASAP AND SHOW THE WORK I WILL MAKE YOU BRAINLIEST AND GIVE YOU A GOOD RATE!!!!! SOMEONE HELP ASAPPPPPPPPPPPPPP!!!!!!!!!!!!!

Answers

Answer:

5x+10=30

Step-by-step explanation:

sorry, it does not have any works/steps in forming this equation.

Solving equation(if needed):

5x+10=30

5x=20

x=4

Answer: you can count by fives 5,10 15,20,25,30

Step-by-step explanation:

anyone think they could help me with this ???

Answers

Answer:

12°

Step-by-step explanation:

As we can see the triangles are congruent so

< F = < C ( being corresponding angles of congruent triangle)

< C = 29

Now

<A +<B + <C = 180° { being sum of angles of triangle }

5x + 1 + 90 + 29 = 180°

5x = 180° - 120°

5x = 60°

x = 12°

I NEED HELP PLEASE !!!

Answers

Answer:

[tex]64[/tex]

[tex]180 - 65 - 51 = 64[/tex]

Please help me outtttt

Answers

Answer:

C

Step-by-step explanation:

The answer is c !!!!!!


Solve for b.
54 = 36 – 9b

Answers

Answer:

b = -2

Step-by-step explanation:

context aaaaaaaaaaaa

Answer:

b = 10

Sorry if this is wrong.

How many copies of earth could fit inside the Sun?

Answers

Answer:

one billion earths can be fit inside the sun

What is 10 divided by 1/2?

Answers

Answer:

[tex]20[/tex]

Step-by-step explanation:

1. Use rule: a ÷ b/c = a × c/b.

[tex]10 \times 2[/tex]

2. Simplify.

[tex]20[/tex]

Therefor, the answer is 20.

Need help with this!​

Answers

Answer: x= 10

Step-by-step explanation:

Same side exterior angles sum to 180.

Using this axiom we can say that

142+ (3x+8) = 180

Add like terms on the left side

150+ 3x = 180

Subtract 150 from both sides

3x = 30

Divide both sides by 3

X= 10

IF I HAVE 10 CHOCOLATE CAKES AND YOU TAKE THREE HOW MANY WOULD I HAVE LEFT?

A.)7
B.)10 AND A DEAD BODY
C.)10
D.)I ATE THEM ALL (THEN GOT SICK)



I NEED THE ANSWER NOWWW ASAP

Answers

A.)7 that the answer

Answer: 10 AND A DEAD BODY DUDE ITS SO OBVIOUS

Step-by-step explanation: it’s 7 pls don’t report

I couldn’t figure this probably out. Please help

Answers

Answer:

x = 9

Step-by-step explanation:

Perimeter of rectangle = 2(l+b) = 42

=> 2(x+3 + x)

=> 2 (2x + 3) = 42

=>  4x + 6 = 42

=> 4x = 42 - 6

=> 4x = 36

=> x = 36/4

=> x = 9

Hope it helps :)

Answer:

Formula = (l + b) x 2= 42 so answer = x=9

Step-by-step explanation:

l =x

b =x+3

( x+x+3) * 2 =42

2x +3 x 2 = 42

2x +3 = 42/2

2x +3 = 21

2x = 21 - 3 =18

x = 18/2

x=9

Stephen and Lauren bought a home to flip
for a profit. After budgeting a total of
$23,150 for improvements, they started by
spending $10,350 on subbing out some of
the work. They would like to replace all
thirty-two of the windows in the home.
What is the maxium amount they can
afford to spend on each window?

Answers

Answer:

400 dollars

Step-by-step explanation:

please help my mom is about to ground me

Answers

Answer:

d

Step-by-step explanation:

180-90-40=50

D: 50

How to:
Add 40+90
Subtract from 180

Events A and B are such that P(A) = 3 8 , P(B) = 2 7 and P(A ∩ B) = 1 7 Work out P(A|B)

Answers

Answer:

[tex]\frac{17}{27}[/tex]

Step-by-step explanation:

Given: Events A and B are such that [tex]P(A)=38\,,\,P(B)=27[/tex] and P(A∩B) = 17

To find: [tex]P(A|B)[/tex]

Solution:

Probability refers to the chances of occurrence of any event.

An event is described as an outcome of a random experiment.

A random experiment is an experiment for which outcomes cannot be predicted.

[tex]P(A|B)=[/tex] P(A∩B) ÷ P(B) = [tex]\frac{17}{27}[/tex]

Fred paid $75 for a pack of 15 toy mice.


How much did each mouse cost?

Answers

75 divided by 15 equals 5 so each mouse cost $5.

Answer: 5 dollars

Step-by-step explanation:

75/15 = 5

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