Solve using elimination.

-9x + 2y = 5
9x − 4y = -19

Answers

Answer 1

hi hruStep-by-step explanation:

Answer 2
-9 + 2y = 5
9x - 4y = -19

Add these equations to eliminate x:
-2y = -14

Then solve -2y = -14 for y:
-2y = -14
-2 -2
(Divide both sides by -2)

y=7

Substitute 7 for y in -9x + 2y = 5:
-9x + (2)(7) = 5
-9x + 14 = 5
-14 -14
(Subtract 14 from both sides)
-9x = -9
-9 -9
(Divide both sides by -9)
x = 1

(1,7)
Mark me Brainlest pls

Related Questions

helppppppppppppppppppppppppppp

Answers

If I’m correct it should be 7 because range is least greatest subtracted from most greatest and the problem is asking from the green box so 67-60=7
The Asher is 7 as the baser

9. Max walks 2 km to school in 40 minutes and Dave cycles 5 km to school in 15
minutes. What is the ratio of:
a) Max's distance to Dave's distance
b) Max's time to Dave's time.

please help me NO LINKS PLEASE ❤️​

Answers

Max’s distance : Dave’s distance = 2 km : 5 km = 2:5
Max’s time : Dave’s time = 40 min : 15 min = 40:15 = 8:3
a) 2 : 5
b) 40 : 15 = 8 : 3

No pic/link to answer pls. NEED TODAY!

Answers

Answer:

I think its H

Step-by-step explanation:

I say u wait for more answers just incase f it wrong, don't immediately go for H.

You might be right about H

What is the force that always opposes (or works against) motion called?

Answers

I believe it’s called friction

1) Explain how angles are measured.

Answers

angles are measured in degrees (°), using a protractor. an angle is usually formed by the two rays or arms at a common vertex.

tom is baking cookies. he needs 3 eggs to make 15 cookies. if tom makes 45 cookies, how many eggs will he need?

Answers

Answer:

15x3=45

3x3=9

Step-by-step explanation:

Tom will use 9 eggs if Tom makes 45 cookies.

The answer would be 9 cookies. This is because (3•3=9)

Can anyone help me I need to finish this as soon as possible but I forgot how to do it

Answers

I don’t exactly know what it is but I think it’s 5. Sorry if it’s wrong

Answer:

5

Step-by-step explanation:

U would have to multiply 3x10 that would equal 30 then you figure out how many '30s can fit into 6 that would equal 5

Hope it helps

1.3 cm 13 cm 5 cm Find the volume of the rectangular prism.
1.)84.5 cm3
2.)88.4 cm3
3.) 81.9 cm3
4.)77.2 cm3​

Answers

answer: 84.5 cm3
explanation: 1.3x13x5=84.5 cm3
hope this helps!
84.5 cm3 it’s the first one

please help quickly.

Answers

Answer:

x = 2, y = 5

Step-by-step explanation:

Given the 2 equations

y = - 2x + 9 → (1)

y = 4x - 3 → (2)

Substitute y = 4x - 3 into (1)

4x - 3 = - 2x + 9 ( add 2x to both sides )

6x - 3 = 9 ( add 3 to both sides )

6x = 12 ( divide both sides by 6 )x = 2

Substitute x = 2 into either of the 2 equations and evaluate for y

Substituting into (2)

y = 4(2) - 3 = 8 - 3 = 5

Then x = 2, y = 5

The answer is x= 2, y = 5

Please I need your help ASAP

Answers

Answer:

5

Step-by-step explanation: y -5x so it will be five because you will add a 1 and it become 5

Answer:

5

Step-by-step explanation:

5 is next to the whole number next to the variable x making it a constant.

WILL MARK BRAINLIEST IF ANSWERED IMPORTANT
In a right triangle, apart from the right angle, the other two angles are

x + 1 and 2x + 5. find the angles of the triangle.

Answers

Answer:

The two other angles are 29 degrees and 61 degrees

Step-by-step explanation:

There are 180 degrees in a triangle. Given this is a right triangle one of the angles is 90 degrees. As in the other two angles have to equal up to 90 degrees. Now we have to find x.

180 - 90 = 90

If x equals 28

28 + 1 = 29

2 x 28 + 5 = 61

29 + 61 = 90

The two other angles are 29 degrees and 61 degrees

Answer:

29 , 61

Step-by-step explanation:

Sum of all angles of a triangle = 180

90 + x + 1 +2x +5 = 180 {Combine like terms}

96 + 3x = 180         {Subtract 96 from both sides}

         3x = 180 - 96

          3x = 84 {Divide both sides by 3}

           x = 84/3

x = 28

x +1 = 28 +1 = 29

2x +5 = 2*28 + 5 = 56 + 5 = 61

(28 divided by 7 + 6 divided by 3) x 1/2

Answers

Answer:

3

Step-by-step explanation:

if you use the system of equations, it is 3.

Answer: 3

Step-by-step explanation:

28÷7=4

6÷3=2

4+2=6

6*1/2=3

Ariel has a total of 320 points on all four of her exams. If these points are shared equally among the four exams, the result is 80 points per project—which is Ariel’s mean score. What would the average be if the total points was 372?

Answers

Answer: 93

Step-by-step explanation: ariel had 4 exams so i think 372 divded by 4 is 93

HELPP PLEASE DUE I N 1 HOURRR

Answers

Answer:

i dont know the part one but

well 5% of 30 = 6

so that means it would be 6%

Step-by-step explanation:

6% since that’s 5% of 30

Will mark brainliest!
Solving Quadratic Equations-factoring
How do find what b could be? My book says to factor completely.
3b²+15b+12=0

Answers

Answer:

b  =  −1

b  =  −4

Step-by-step explanation:

Common Factor

Divide both sides of the equation by the same term

Use the quadratic formula

Answer:

-1 or -4

Step-by-step explanation:

first all you have to do is to multiply 12 by 3b² to give you 36b² and then find a number(x) multiplied by another number(y) to give you 36b² and those two numbers must sum up to give you 15b

doing this, we would have our two numbers to be

12b and 3b

replace these two numbers with 15b in the equation

3b² + 12b + 3b + 12=0

(3b²+12b) + (3b+12)=0

3b(b+4)+3(b+4)=0

note: the numbers in the brackets must be the same

(3b+3)(b+4)=0

therefore, 3b + 3= 0 or b + 4= 0

3b+3= 0

3b=-3

b=-3/3

b=-1

or

b+4=0

b=-4

Help me out please.i will give brainly

Answers

Answer:

Hello! answer: 17

Step-by-step explanation:

Assuming this is the Pythagorean theorem our formula would be

a^2 + b^2 = c^2

meaning both of those sides multiplied by themselves added together will equal a number which is the result of c multiplied byitself sorry it sounds confused but...

15 × 15 = 225 8 × 8 = 64 225 + 64 = 289

the square root or the (number multiplied byitself that equals 289) is 17 because

17 × 17 = 289 so × = 17 I hope that helps!

Answer:

x = 17 cm

Step-by-step explanation:

Since it is a right triangle and you are trying to find x, you can use the pythagorean theorem.  (a² + b² = c²)

First, plug the values into the equation:  (a and b represent the legs and c represents the hypothenuse; otherwise known as the longest side.)  

8² + 15² = c²

Square 8 and 15( or multiply them by themselves):

64 + 225 = c²

Add:  

289 = c²

Take the square root of both sides:  

√289 = √c²

Simplify:

17 = c

Therefore, x = 17 cm.  

Hope this was helpful!  Have a nice day!  :)

Please help. I know the second one has a right angle so I could solve that but the other two I'm so confused haha. Please help :3

Answers

Ok soo for the first one we're gonna use sine, (remember SOH CAH TOA) since we know the value of the hypotenuse.

Sin37° = x/9.3

0.6018=x/9.3

x= 5.59674

The last one we'll use cosine because we know the value of the side adjacent to 96°.

Cos42°=5.1/y

0.7431=5.1/y

y= 6.86272692

I assume it has you round your answers to the nearest tenth so the first one would be 5.6 and the second would be 6.9 .

Hope this helps!

Any absurd answers will be reported. Please someone answer questions 1, 2, and 3. I will mark as brainliest for an authentic answer.

Answers

Answer:

1. -1293.00

2. 1,293.00

3. They will not be able to save $1,500.00 each month unless they start following their budget. Their expenses are going over budget on food, entertainment, and credit cards. But if they start sticking to the budget, they will be able to save $1500 each month.

( I think that this is right )

(I WILL GIVE BRAINLIST!)

1.4(+2)−10>38=

2.4( − 1) < 8=

3.4( + 2) > 8=

4.2( + 4) ≥ 16=

Answers

Answer:

1.4(+2)−10>38=false

2.4( − 1) < 8= true

3.4( + 2) > 8= false

4.2( + 4) ≥ 16=false

Step-by-step explanation:

1: false
2: true
3: false
4: false

Add: a² + b² + c² – 3abc and a² – b² + c² + abc


2. Add: xy² + 4x²y – 7x²y - 3xy² + 3 and x²y + xy²


3. Add: 5x² + 7y - 6z² ; 4y + 3x² ; 9x² + 2z² - 9y and 2y - 2x².


4. From the sum of 3x - 2y + 4z and 3y – 2z, subtract x - y - z.


5. Subtract a – 2b – c from the sum of 3a – b + c and a + b – 3c.


6. The sum of two expressions is 3x2 + 2xy – y2. If one of them is 2x2 + 3y2, find the other.
7. From the sum of 4b2 + 5bc, -2b2 – 2bc – 2z2 and 2bc + 4c2, subtract the sum of 5b2 – c2 and -3b2 + 2bc + c2.
8. What should be subtracted from 3x + 5y + 9 to get - 2x + 3y + 15?

9. Subtract 2m – 5q + 7 from 4p + 2q and add your result to m2 – 3m3 + m - 1.

10. Subtract 2a2b – 3b2 from 3a2 – 5ab2 + 2b2 and subtract your result from the sum of the two expressions 3ab2 + 5b2 – 2a2b and a2b + 5a2 – 3ab2

Answers

Answer:

Here is your ans.

Step-by-step explanation:

I have few time Because I am too late to school.. So I had solved only up to q.no 5. . Hope you understand it. If you Like then Plz give a five star rating to my ans. And One thing sorry for rough handwriting and mistake

1. 2a^2+2c^2-2abc
2. -xy^2-2x^2y+3
3. 15x^2+4y-4z^2
4. 2x+2y+3z
5. 3a-c+2b
6. x^2+2xy-4y2
7. Sum of 4b2+5bc ; -2b^2-2bc-2c^2 ; 2bc+4c^2 is (2b^2+2c2)
Sum of 5b^2-c^2 and -3b^2+2bc +c^2 is (2b^2-2bc)
And the subtract of two answers is (2c^2-2bc)
8. 5x+2y-6
9. 3m+6-7q-4p+m^2-3m^3
10. Subtract of (3a^2-5ab^2+2b^2) and (2a^2b-3b^2) is (3a^2-5ab^2-b^2-2a^2b)
Sum of (3ab^2+5b^2-2a^2b) and (a^2b+5a^2-3ab^2) is (5b^2-a^2b+5a^2)
And the subtract of two answers is (6b^2+a^2b+2a^2+5ab^2)
I hope this helped! And if you need to see the solution here it is. I can’t upload other pics (5-7)

17.Frank needs to buy $70.89 worth of prescription drugs before tax. In South Dakota the rate of tax is 4%. In Nebraska the tax rate is set at 5.5%.

Calculate how much Frank would have to pay for the prescription drugs in South Dakota, including tax, rounding to the nearest cent.

Answers

Answer:

$2.84 :D

0w0

OwO

OWO

UwU

UWU

UvU

UVU

:P

:)

:(

:/

:3

:v

$70.89 x 1.04 = 73.7256 = $74 (rounding to the nearest cent)

Select each pair of equivalent numbers

50/100 and 50%

1/3 and 30%

2/6 and 40%

4/5 and 80%

Answers

Answer:

50/100 and 50%

4/5 and 80%

Step-by-step explanation:

Hope it helps you in your learning process

Answer: I would go with 50/100 and 50%, And another will be 4/5 and 80%

Step-by-step explanation: Because 50/100=50% and if you had 2+2+2+2 it would equal 80% put the zero at the end of your process.

Which of the following is NOT a possible UNIT for the phrase "King Henry Died Unexpectedly Drinking Chocolate Milk?

Answers

Answer: I believe its foot

Step-by-step explanation:

One side of the triangle is 4 cm, and the sum of the other two sides is equal to a
whole number of cm. What is the smallest possible perimeter of the triangle?
A. 9 cm
B. 10 cm
C. 11 cm
D. 15 cm
E. 17 cm

Answers

Answer:

A) 9 cm

Step-by-step explanation:

By the Triangle Inequality, any two sides of a triangle must be greater than the remaining side.

In order to minimize the perimeter, we will assume that 4 cm is the longest side.

Thus, the two remaining sides must be greater than 4.

Since we are given that the sum of the two remaining sides is a whole number, the smallest whole number value greater than 4 is 5.

Hence, the smallest perimeter possible 9 cm.

Our answer is A.

A 9cm is the answer of this problem

Can someone help with this for brainliest?

Answers

Answer:

A: D

B: 20

Step-by-step explanation:

D is the correct answer because it can correctly determine what B will be.

We can calculate the problem and we get 20.

Answer:

0.4m = 8

20 minutes

Step-by-step explanation:

Equation

0.4m = 8

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

Solve for m

Divide both sides by 0.4

m = 20 minutes

Help question is in the pic PLEASE EXPLAIN HOW YOU GOT THE ANSWER!

Answers

Part A

The rectangular prism is a box, and the volume of the box is

V = L*W*H

so we simply multiply the length (L), width (W) and height (H)

In this case, the dimensions of the box are

L = 13W = 5H = 6

The order doesn't matter in this case because we can multiply two or more numbers in any order we want (eg: 6*7 = 7*6 = 42)

So,

V = L*W*H

V = 13*5*6

V = 390

The volume of one box is 390 cubic inches.

I'm not sure what formula Diego is using. It seems like he's computing the perimeter of the base (the 13 inch by 5 inch rectangle) to get 13+5+13+5 = 36 inches. Then he's multiplying that by 6 to get 36*6 = 216; however, this value is meaningless because we won't involve the perimeter at all when it comes to finding the volume.

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

So in short, Diego is incorrect. All Diego needs to do is multiply the three values 13, 5 and 6 to get the volume of one box to be 390 cubic inches.

====================================================

Part B

Use the same formula back in part A. That formula being V = L*W*H.

We'll use this formula to compute the volume of each carton.

Carton A has a volume of 10*13*28 = 3640 cubic inchesCarton B has a volume of 10*14*22 = 3080 cubic inchesCarton C has a volume of 11*12*26 = 3432 cubic inches

All three cartons have a volume larger than 390 cubic inches, meaning that we can fit at least one box.

If one box is 390 cubic inches, then 8 of them lead to a volume of 8*390 = 3120 cubic inches. Note that this value (3120) is larger than the volume of carton B. There's no way that Diego can use carton B to hold all 8 boxes at once. So we have no choice but to rule it out.

Carton C on the other hand has a volume of 3432 cubic inches, which is larger than the 3120 figure we got. Meaning he can house all 8 boxes here. The amount of leftover space is 3432-3120 = 312 cubic inches which is what the packing material will take care of. In other words, you need 313 cubic inches of packing material for carton C. Carton A is a similar story, but will require more packing material (since carton A's volume is larger).

The best option is to go with carton C. It allows him to hold all the 8 boxes, with the least amount of packing material required.

21. Point Z(-5, -6) was translated to Z'(-8, 4) Describe the direction and distance of the translation Please hurry!!​

Answers

Answer:

Question 1.. A. Question 2.. C  Question 3.. D. Question 4.. D. Question 5.. C.

Question 6.. A. Question 7.. B. Question 8.. B. Question 9.. B. Question 10.. B.

Explanation:

Step-by-step explanation:

over to the left 3 and up 10 !!!!

Naman is 4 times as old as his sister now.
In 20 years’ time, Naman’s age will be 14
years less than twice his sister’s age. How old is Naman now?

Answers

Answer:

Naman is 12 years old

Step-by-step explanation:

This means his sister is 3 which means in 20 years Naman will be 32 and his sister will be 23. Double 23 and you get 46 and 46 - 32 is 14

Naman would be aged 12!

Help with this math, please. It's just one question.

Answers

Answer:

Hello! Answer: 116.64

Step-by-step explanation:

What I did was multiplied 5.4 by 7.2 by 6 and we get a total of 233.28 then we just divide by 2 so...

233.28 ÷ 2 = 116.64 HOPE THAT HELPS!

Answer:

Step-by-step explanation:

To find the volume of a three dimensional shape, you can multiply all three dimensions(length, width, and height).

Volume = 5.4 * 7.2 * 6

Volume = 233.28

If you round to the nearest tenth place, your answer is 233.28 inches cubed . However, if you think about a triangle, the area is base times height divided by two. Similarly, you have to divide the volume by two to get your final answer. Thus, your final answer is (C) 116.64

Seth has swimming practice three days each week. This week Seth swam a total of 114 laps. At this rate, how many laps did Seth swim on average each day?

Answers

Answer: 38 laps a day

Step-by-step explanation: So, he swam three days and he swam 114 laps in total. What you need to do is divide

how many laps he did in total/how many days he swam

114/3=38

Hope this helps, if you liked my answer please mark me brainliest, it really helps :)

The answer is 38 laps per day
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