Mathematics High School

3x = 27 + 3y
3x - 10y = 27

please explain how you got the answer.

Answers

Answer 1

Answer:

Hi there!

Your answer is:

Y= 0

X= 9

Step-by-step explanation:

3x=27+3y

3x-10y=27

Solve one of them for Y

I chose the first equation

3x=27+3y

-27

3x-27=3y

/3

x-9 = y

NOW, plug y in the second equation!

3x-10y=27

y= x-9

3x-10y=27

3x-10(x-9) = 27

Solve for x!

3x-10x+90 = 27

-7x + 90 =27

-90

-7x = -63

/-7

x= 9

FINALLY, plug back in x for y equation

y=x-9

x=9

y=9-9

y=0

Related Questions

Solve the following.................................................................................

Answers

Answer:

21

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

7÷[tex]\frac{1}{3}[/tex]

7*[tex]\frac{3}{1}[/tex]

21

A ratio is a comparison of ____ numbers or measurements

Answers

Answer:

the answer is: "a ratio is a comparison of two numbers or measurements

find the absolute value

Answers

Answer:

3

Step-by-step explanation:

Your answer will be three

Mikes home street address number has 5 digits . Two digits have values of 50,000 and 200 . The digits in the ones place is 3 . The value of each of the other digits is ten times the value of the digits on its right . What is mikes home street address number ?

Answers

Answer: Mikes home street address number = 52233

Step-by-step explanation:

We need to make a 5 digit number such that

Two digits have values of 50,000 and 200 .

The digits in the ones place is 3 .

Now number is like 50,000 +x + 200 + y + 3  (ten thousand >  thousand > Hundred > tens > ones )

Need values for :  thousands place and tens place

The value of each of the other digits is ten times the value of the digits on its right .

thousands place value (x)= 200 x 10 = 2000

tens place value (y)= 3 x 10 =30

Required number =  50,000 +2000 + 200 + 30+ 3  = 52,233

∴Mikes home street address number = 52233

Please answer. The best answer will be marked brainliest.

Answers

take out the square root of 543. 192

and secondly take out the cube root of same number which is given up

A pound of chocolate costs 7 dollars. Deandre buys p pounds. Write an equation to represent the total cost (c) that Deandre pays.

Answers

Answer:

C=7(p)

Step-by-step explanation:

Answer:

c=7p

p=pounds

c=costs

Show that 3 · 4n + 51 is divisible by 3 and 9 for all positive integers n.
​

Answers

Answer:

4^1 + 17 = 21 , which is divisible by 3. 4^k + 17 and 3 * 4^k are both divisible by 3, so 4^k + 17 + 3 * 4^k is divisible by 3 as well. 3 * (4^n + 17) would be divisible by 9

PLEASE HELP I WILL GIVE BRAINLYEST

-8x+-20=

Answers

Answer:

− 8 x- 20,

x  = - 5/2

Step-by-step explanation:

rewrite 20 as 4 times 5,

and rewrite 8 as 4 times 2

= -4 times 2x - 4 times 5

= -4 (2x + 5)

What is LCM of 4a and
10a
Please explain I don’t understand

Answers

Answer:

it is 20a

Step-by-step explanation:LCM means least common multiple.so the least common multiple of 4a and 10a is 20a

.hope this helps!

The person son above is correct

What is the equation of this line?

Answers

Answer:

2x - y = 0

Hope this helps

Answer:

y=2x

Step-by-step explanation:

when x =1,2,3 y=2,4,6 respectively so

y is the double of x

y=2x

hope it helps

Country A has a population of 514,482 and Country B has a population of 523,407. How would you compare these populations

Answers

You can subtract the populations to see by how many more people/citizens does country B have

(IF YOU GIVE ME THE CORRECT ANSWER YOU GET BRANIEST) as part of a summer job, you stack crates. the crates have the same length and width but have heights of 1 or 2 feet. using a forklift, you can stack the crates 8 feet high. if you stacked 3 of the 2-foot crates how many of the 1-foot crates were in the stack? please help!!

Answers

Answer:

2 one foot crates were in the stack.

Step-by-step explanation:

if the forklift can hold 8 feet, and 3 two-feet ones were in the stack, that leaves 2 feet left, which allows for two 1-foot crates.

3x2=6

8-6=2

1x2=2

A Plane flies with a velocity of 52 m/s south in a 12 m/s wind blowing in the same direction. Find the
combined direction and velocity of the plane.

Answers

Answer:

64 m/s and south direction

Step-by-step explanation:

Wind direction is sameWind speed = 12 m/sPlane velocity = 52 m/s

Combined direction is

same = south

Combined velocity

52 + 12 = 64 m/s

What is the range of the function y=sq root x+5

Answers

Answer:

[0,inf)

Step-by-step explanation:

inf means infinity logo

What is -5 5/8 + 3 1/2?

Answers

Answer:

-17/8

Step-by-step explanation:

I believe your answer is -2 1/8

What is the scale factor for this dilation?

Answers

k=2 person above is correct

what is the distance of the line segment between the endpoints (-6,5),(4,-5)​

Answers

The distance between two points is given by
Root of (x2 - x1) squared + (y2 - y1) squared
= root of (10 squared )+( -10 squared )
= root of 100 + 100
= root of 200

A store is marking down the price of a television 25 percent from the original price of $250. Which expression can be used to find the marked down price?

Answers

25/100 x 250
= $62.50 is 25% of $250

250 - 62.50
= $187.50
Therefore, the marked down price is $187.50

Answer:

250 × 0.25

Step-by-step explanation:

x/250 × 25/100

cross multiply

100x = 250 × 25

100x = 6250

divide by 100

x = 62.5

62.5 is how much the price got marked down

original price - marked down amount = new discounted price

250 - 62.5 = 187.5

$187.50 is now the actual price

As for which expression can be used to find the marked down price, none are listed in this problem and I'm assuming its a multiple choice question considering the wording of "which"

how i solved it is through cross multiplication but another way is by using the expression:

250 × 0.25

this is because 25% equals 0.25

(-49) - (-66)


Pls give relevant ans

Answers

Answer:

Step-by-step explanation:  -49 -(-66)

= -49 + 66  ( here (-) and (-) is multiplied, therefore the final answer is +)

= 17                ( here when - and+ sign comes subtract them as we do normally, then mark the final answer with the greater number's sign, here the greater number is 66, so in the final answer we mark +17 or 17)

CORRECT ANSWER WILL GET BRAINLIEST!!!!

Answers

Answer: The answer is B. x=125

Step-by-step explanation: Brainliest plz :)

Pls help i need this math question solved Brainleist to the first person

Answers

Answer:

x = 10°

Step-by-step explanation:

8x + 50 = 130 (corresponding angles are equal)

8x = 80

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Why would there not be an x-intercept for this situation?

Answers

Answer:

Because you cannot go lower than 0ft when rock climbing.

Step-by-step explanation:

You can't go lower than sea level when rock climbing.

Solve 5x − 2(2x − 1) = 6

Answers

Answer:BRAINLIEST PLSOk so, the answer isStep-by-step explanation:Ok so, Let's solve your equation step-by-step.5x−2(2x−1)=6Step 1: Simplify both sides of the equation.5x−2(2x−1)=65x+(−2)(2x)+(−2)(−1)=6(Distribute)5x+−4x+2=6(5x+−4x)+(2)=6(Combine Like Terms)x+2=6x+2=6Step 2: Subtract 2 from both sides.x+2−2=6−2x=4So, your answer would be:x=4

Answer: x = 8

Step-by-step explanation:

The answer begins with the distributive property, multiplying positive 2 times the elements in parenthesis.

5x - (2)(2x - 1) = 6

5x - 4x - 2 = 6

1x = 6 + 2

x = 8


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What is X

Answers

Answer:

[tex]25.89=15.19+2x[/tex]

[tex]x=5.35[/tex]

I hope this helps!

Simplify the expression.(1/3)4

Answers

Answer:

4/3 or 1 1/3

Step-by-step explanation:

(0.33) 4

I think that is right, good luck.


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Answers

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Step-by-step explanation:

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Answers

Answer:

29 is 1.50 i think

Step-by-step explanation:

Answer:

Area is 0.15. Measure ratio is 1:2.

Step-by-step explanation:

Area is length x width.

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Bob and his fish friends have been noticing these weird silver things hanging out the in the water lately. They have also noticed that some of their friends seem to be disappearing. Bob wonders if the two are related. Their school of fish started with 450 fish in it but now they only have 360 fish in their school. By what percentage was the population of their school of fish reduced?

Answers

Answer:

450

Step-by-step explanation:

subtract

Answer:

I am pretty sure 25%

Step-by-step explanation:

I had this question before

plz ive been stuck on this for an hour plzzz help?​

Answers

Answer:

X=-8

Step-by-step explanation:

2 #7&"8*_8-*'7&-$(7

X<-8

On the number line, put the dot at -8 and shade to the left.

Please help!!!
Write an equation to represent the total weight, p, of a full animal watering pail, if the pail weighs 12 pounds and the water weighs 8.3 pounds per gallon,g.

Answers

Answer:

12+8.3(g)=p

Step-by-step explanation:

#of gal of water x 8.3 per gal. number of gallons of water is not given so it is represented by g

+ weight of pail which is given, 12

= p , weight of full pail

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