8x+9y=60 2x-9y=-30 elimation method

Answers

Answer 1

Answer:

x=3 y=4

Step-by-step explanation:

8x+9y=60 + 2x-9y=-30

10x=30

x=3

y=4


Related Questions

40.8 divide by 12 pleas find it

Answers

Answer:

40.8 ÷ 12 = 3.4

Step-by-step explanation:

---------

The solution of expression 40.8 divide by 12 is, 3.4

The given numbers to divide are,

⇒ 40.8 divide by 12

Let us assume that, a is divided by b,

Then, it can be written as,

⇒ a / b

Hence, We can write as,

⇒ 40.8 / 12

⇒ 408 / 120

⇒ 3.4

Therefore, The solution of expression 40.8 divide by 12 is, 3.4

Learn more about the divide visit:

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Given the value of cosine,
Cos 0=1/5
Find the value of sine
Sin(0)=

Answers

Answer:

25896

Step-by-step explanation:

please help me with this:(((((​

Answers

1.) Not sure about the first one
2.) 2
3.) Y=3x-9

If PM = 6x + 7 and PN = 12x – 5. Find the length of PL.

Answers

Answer:

Step-by-step explanation:

6x+y=88-6. 4=2x-6. 10=2x. (X=5. 14 pm = PN =PL. 4X+7=12x-5. 7=88-5.

You surprised your friends with a trip to a haunted house this weekend. The admission tickets were $8 per friend. You had to pay an additional $5 for parking and you spend $20 on food. You also got your friends a card that was $2 per friend. At the end of the night, you spent $105. How many of your friends did you bring to the haunted house?

Answers

Answer: 8

Step-by-step explanation:

Ok, start going backwards with the addition and substration which makes it:

105 – 25 = 80

Since you had to pay 8 and 2 for each friend so that makes the cost for a friend 10 so:

80 divided by 10 = 8

8 Friends is the answer.

please someone help. I really need help with this question. I will give brainliest

Answers

Answer:

3/200

Step-by-step explanation:

total medicine = 9/50 liter

evenly divided into 12

so 1 prescription = 9/50  / 12

= 9/50*12

=3/50*4

=3/200

help help Please help​

Answers

Answer:

Rises 1 and runs -5

Step-by-step explanation:

The slope is 1/-5

if angle PQR equal 15 degrees in the triangle PQR, what is the value of u?

Answers

Answer:

a.

Step-by-step explanation:

Write the following statement in the form of equation.
1) One third of a number plus 7 is 26​

Answers

1/3x+7=26
1/3 of x plus 7 is 26

Work out the mean of √50, √18 and √8.

Give your answer in the form of a√2.

Show full working out.

Thank you!! <3

Answers

[tex]\frac{\sqrt{50}+\sqrt{18}+\sqrt{8}}{3} = \frac{10}{3} . \sqrt{2}[/tex]

ok done. Thank to me :>

What is the first step to solve the following equation:
7x = 42

Answers

Divide by 7, answer is 6
7x = 42

divide each side by 7

7x/7 = 42/7

x = 6

the answer is 6 :)

what is the awnser to B

Answers

Using the concept of probability, the probability of rolling 2 sixes would be 1/25

From the tree diagram given :

P(6) = 1/5

The probability of rolling 2 sixes can be defined thus :

P(2 6's) = P(6) × P(6)

Hence,

P(2 6's) = 1/5 × 1/5 = 1/25

Hence, the probability of rolling 2 sixes is 1/25.

Learn more : https://brainly.com/question/14522818

Make each denominator rational. In other words, rationalize the denominator.

A) (√11-1)/√11

B) (3 + √6 )/√6

Answers

The detailed answer is there in the image I have attached.

Hope it helps you....

Please mark as Brainlliest!!!!

oletha rapples from the top of a cliff at a rate of -6 inches per second. It takes oletha 4 minutes to reach the bottom of the cliff. What is the height of the cliff in feet?

Answers

Answer:-120

Step-by-step explanation:multiply -6 by 60 seconds which it will give you  -360 in inch’s and then multiply -360 into 4 and that’s -1440 and then combert them into -120

What is the slope of the line passing through the points (−3, 4) and (2, −1)?

3/5 this is a fraction by the way

1

−1

−53

Answers

[tex](x_1,y_1) = (-3,4),~~ (x_2,y_2) = (2,-1)\\\\\text{Slope,}~ m = \dfrac{y_2 - y_1}{x_2 - x_1} =\dfrac{-1-4}{2+3} = \dfrac{-5}5 = -1[/tex]

Someone pls help!

Gabby owns 35 chickens and each one produces three eggs per day. How many eggs can she collect each day?

Answers

Answer:

Well 35 chickens. Each produce 3 eggs a day. 35*3= 105

105 eggs per day

Answer:

105 eggs

Step-by-step explanation:

Number of eggs per day = number of chickens x eggs per chicken

35 x 3 = 105

105 eggs

-Chetan K

Did I get this right originally? I think I did.

Answers

Yes you did great job

that’s what I thought first, but the things right. each x value IS associated with only one y value. If there was more than one arrow pointing from one x value, it wouldn’t be a function, because it would mean one x value has more than one y value. I hope that made sense!

Which of the following is NOT classified as nonverbal communication a. Signs b. Eye Contact c. Body language d. Gestures

Answers

Answer:

american sign language (ASL)

87.2- somthing=61.2

what is the awnswer

Answers

Answer:

26.0

Step-by-step explanation:

87.2-61.2= something

something is= 26

26
EXPLANATION
87.2-61.2=26.0

Part A: Rhett made $250 washing cars with his mobile car wash company. He charges $70 per car and earned $50 in tips. Write an equation to represent this situation. (4 points)

Part B: Scarlett made a profit of $250.00 with her mobile car wash company. She charged $75.00 per car wash and received $35.00 in tips, but also had to pay $5.00 in cleaning supplies per car wash. Write an equation to represent this situation. (4 points)

Part C: Explain how the equations from Part A and Part B differ. (2 points)

Answers

Answer: 250=70x+50 For A

Step-by-step explanation:

Answer:

Part A 70x+50=250

Part B(75x + 35) = 250 - 5x

Step-by-step explanation:

Which elements are involved in physical weathering?

Air, salt, rivers, sand, and ice
Air, water, ice, temperature, and plants
Animals, water, pressure, sediment, and gravity
Temperature, animals, ice, gravity, and plants

Answers

Answer:

heat, water, ice, or other agents

Step-by-step explanation:

Air salt rivers sand and ice

Match the Definition with the Property.
Question 3 options:


Commutative Property


Symmetric Property


Transitive Property


Reflexive Property


Associative Property

1.
The order in which you add or multiply numbers does not affect the result.
2.

The way you group numbers when adding or multiplying does not affect the result.
3.
Any real number is equal to itself:
a = a
4.

Let's you switch the expressions on either side of an equation:
If a = b, then b = a
5.
If one real number is equal to a second real number, and the second real number is equal to a third real number, then the first real number must equal the third:
If a = b and b = c, then a = c

Answers

Answer:

Commutative Property

The way you group numbers when adding or multiplying does not affect the result.

Reflexive Property

he order in which you add or multiply numbers does not affect the result.

Step-by-step explanation:

3. drinking 8 glasses of water a day is good for your health. if each glass of water is equivalent to 148 mL, how many liters of water you need to consume everyday.

Answers

Answer:

pap

Step-by-step explanation:

papi

Answer:

1184 mL (148×8)= 1.184 liters

Does the following relationship represent a function?

Answers

No the relationship is not a function

Weighted Sums and Averages: Quarterback Ratings
Use the following equation to determine quarterback ratings.
25 + 10(%COMP) + 40(%TD) - 50(%INT) + 50(YD)
OR =
12
1. Using the equation above, find the quarterback rating for Dak Prescott, Dallas Cowboys
Quarterback for 2019.
.
.
% comp 65.1
% TD 5
% Int 1.8
YD 8.2

Answers

Answer:

22

Step-by-step explanation:

HELP - John uses 1/3 cup of orange juice for every 1/6 cup pineapple juice for fruit punch. Write the number of cups of orange juice John uses for 1 cup of pineapple juice.

Answers

to make cups of pineapple equal to 1, multiply by 6, also do it to orange juice. 1/6 x 6=1 cup pineapple, 1/3 x 6=2 cups orange

If 3x 6 = 213x plus 6 equals 21, what does x 2x plus 2 equal?.

Answers

Answer:

17

Step-by-step explanation:

hope this helped

Please help me!!! It would really help

Answers

Answer:

  D'(25, 0)

Step-by-step explanation:

Dilation by a factor of 5 about the origin multiplies each individual coordinate by 5.

  (x, y) ⇒ (5x, 5y)

  D(5, 0) ⇒ D'(5·5, 5·0) = D'(25, 0)

(X-7)squared
Expand and simplify

Answers

Answer:

Step-by-step explanation:

(a - b)² = a² - 2ab +b²

(x - 7)² =x² - 2* x * 7 + 7²

            = x² - 14x + 49

solve pls brainliest

Answers

Answer:

420

Step-by-step explanation:

300+40% equals 420 so he earned 420 last month from the commission

Answer:

$120

Step-by-step explanation:

A 40% commission means he earns 40% of the total revenue. That's 40% of $300 in this case.

To convert from a percentage to a multiplier, divide by 100:

[tex]\frac{40}{100} =0.4[/tex]

Then multiply the total revenue by that number:

[tex]300*0.4=120[/tex]

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