How would you do this help

Answers

Answer 1

Answer:

Multiply the second equation by 2

Solution: [tex](-\frac{45}{11},\frac{29}{11})[/tex]

Step-by-step explanation:

1) In order to use the elimination method to solve systems of equations, you must first multiply one or both of the equations so that the coefficients of a pair of terms with matching variables share the same number, but have opposite signs.

In this case, the y terms must fit that requirement. The y term in the first equation is 2y and the one in the second equation is -y. They already have opposite signs, one positive and other negative, so we just need -y to be -2y. So, in order to do that, multiply by 2.

2) After multiplying the whole second equation by 2, you will get [tex]8x - 2y = -38[/tex]. Now, add the the two equations together, eliminate the y terms, and isolate x to find its value.

3) Then, substitute that x value back into one of the equations to receive the y-value.

To better explain these steps, I attached pictures below.

Related Questions

Mrs. Blue has eight packages of pencils that she wants to distribute evenly between her sixth grades students. There are 24 pencils in each package, and she has 22 students. How many pencils will be left over after Mrs. Blue has given each student the same number of pencils?

Answers

Answer:

Step-by-step explanation:

If there are 22 students and she has 24 pencils she would need to give each of them 1 pencil. 24-22= 2

The number of pencils will be left over after Mrs Blue has given each student the same number of pencils is 16 pencils.

Given that, Mrs Blue has eight packages of pencils that she wants to distribute evenly among her sixth grades students. There are 24 pencils in each package, and she has 22 students.

We need to find out how many pencils will be left over after Mrs Blue has given each student the same number of pencils.

What is the unitary method?

The unitary method is a process by which we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit. It is a method that we use for most of the calculations in math.

There are 24 pencils in each package and there are eight packages of pencils.

So, the total number of pencils=8×24=192

Now, she is distributing evenly among 22 students=192/22=8.72

Then, 8×22=176

Mrs Blue is distributing 8 pencils to each student.

Number of pencils left=192-176=16

Hence, the number of pencils will be left over after Mrs Blue has given each student the same number of pencils is 16 pencils.

To learn more about the unitary method visit:

https://brainly.com/question/22056199.

#SPJ2

Parallelograms (5x+4). 59

Answers

Answer:

59 = (5x + 4)

x = 11

Step-by-step explanation:

59 = (5x + 4)

5x + 4 = 59

5x = 59 - 4

5x = 55

x = 55/5

x = 11

ALGEBRA 1 ! Please help!! need asap 100 POINTS

Answers

Answer:

1. Skyler's processes are incorrect. She put (3^6)^x = 9, but when working with exponential problems, both sides have to have the same base. 3 does not equal nine, so you can automatically rule out her approach.

2. Robert's processes are correct. He set both bases equal to each other and then solved for the exponents.

3. Kaitlyn is also correct, she set the bases equal to 3 and solved for the exponents.

Step-by-step explanation:

When working with exponents, the goal is to get the bases equal to each other. In this case, you could have set it equal to 9 (which Robert did) or you could have set it equal to 3 (like Kaitlyn did). But you never want the bases to be conflicting, which is what Skyler did. Just by looking at the problem and using deductive reasoning, it is likely that Robert and Kaitlyn are both correct, since they have the same answers, although they used different methods, but it is still important to look at the steps.

Skyler's one mistake was setting 3 = 9, because that is impossible. If you plug in her answer of 3/2 into x, you get a ridiculous number of 19,683 = 9, which is not possibly true. For the others, when you plug in 1/3, you get 729^(1/3) = 9, so 9=9.

Hopefully this makes sense, if not, I can try to explain it better. Thanks much & have a wonderful day.

The explanation of whether Skyler, Robert or Kaitlyn were correct/wrong and the reason from their processes is that;

1) Skyler is wrong because she didn't make the bases of both sides to be equal before equating the exponents.

2) Robert is correct because he made the bases of both sides to be the same before equating the exponents.

3) Kaitlyn is correct because she made the bases of both sides to be the same before equating the exponents.

1) SKYLER'S PROCESS;

The problem skyler wants to solve is;

729^(x) = 9

The first step is to reduce 729 to the lowest base to get; [3^(6)]^(x) = 9

Next she did was to equate 6x to 9.

When working with equality of exponents both sides ought to have the same base and so she could have converted 9 to have same base of 3 as the left hand side after which she will equate the exponents.

So skyler is wrong.

2) ROBERT'S PROCESS;

We saw that skyler didn'take both bases equal to each other but now Robert has done the correct thing by having;

9^(3x) = 9¹

After which he equated the exponents to get;

3x = 1

x = 1/3

Thus; Robert is correct

3) KAITLYN'S PROCESS;

Kaitlyn is also correct because she followed the same correct pattern of ensuring the bases are the same before equating their exponents.

Read more about laws of exponents at; https://brainly.com/question/11761858

solve system by elimination
6.
2x + 5y = 14
4x + 2 y = -4

Answers

Answer:

x=−3 and y=4

Step-by-step explanation:

Multiply the first equation by -2,and multiply the second equation by 1.

−2(2x+5y=14)

1(4x+2y=−4)

Becomes:

−4x−10y=−28

4x+2y=−4

Add these equations to eliminate x:

−8y=−32

Then solve−8y=−32for y:

−8y=−32

−8y

−8

−32

−8

(Divide both sides by -8)

y=4

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

2x+5y=14

Substitute4foryin2x+5y=14:

2x+(5)(4)=14

2x+20=14(Simplify both sides of the equation)

2x+20+−20=14+−20(Add -20 to both sides)

2x=−6

−6

(Divide both sides by 2)

x=−3

Step by step:
Multiply the first one by -2 to be able to eliminate the x’s
-4x-10y=-28
Add them
-4x-10y=-28
4x+2y=-4
——————-
X’s cancel out your left with
-8y=-32
Divide by -8 to get y alone
Y= 4
Plug in for y to get x
4x+2(4)=-4
4x+8=-4
-8 -8
————-
4x=-12
x=-3
(-3,4)

plz help The link under is the question I need help today

Answers

Answer:

the fourth one: 36.25

Step-by-step explanation:

the 3 in 20.342 is in the tenths place.

0.3*100=30

the three in 36.25 is in the tens place

{y=2x
{x=-y+6

please help i have a 27 in this class please help

Answers

Answer:

x = 2

Step-by-step explanation:

y=2x so

x=-2x+6

add 2x to both sides

3x=6

divide both sides by 3

x=2

the answer would be x =2

can someone please explain inverse operations to me??

Answers

Answer:

The operation that reverses the effect of another operation. Example: Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7.

Step-by-step explanation:

Answer:

Inverse operations are opposite operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations.

PLZ MARK AS BRAINLIEST

Can some one help pls!!!

Answers

Answer:

Slope= 2x y-intercept: 2Slope= -x y-intercept: 8Slope= -4x y-intercept: 12 Give brainlist

Lowest common multiple of 28 and 144

Answers

Answer:

Lowest Common multiple -(L.C.M) is 1008.

Step-by-step explanation:

2 ¦ 28, 1442 ¦ 14, 72 ¦ 7, 36

2×2×7×36 = 1008

(L.C.M) =1008

─━─━─━─━─━─━─━─━─━─━─━─

L.C.M = Lowest Common Multiple

Which equation is graphed?

Answers

Answer: I think it is b

Explanation:

In EFG, EG is extended through point G to point H, m< EFG (2x+1),
m

Answers

Answer:

Step-by-step explanation:

Answer:x+19=(6)+19=25

Step-by-step explanation:

Simplify -5(-3w - 5) - 20

Answers

Answer: 15w + 5

-5 (-3w - 5) - 20
*distribute the -5*
15w + 25 - 20
*combine like terms*
15w + 5

I hope you got a good grade on your assignment!!!

Anyone know the awnser to this it’s 28 points!and you have to give me the awnser to all of them

Answers

Answer:

The y-intercept is -6 and the x-intercept is 5

Step-by-step explanation:

I posted a picture on how I got this

Hope this Helped

Answer:

Find attached file also

Step-by-step explanation:

6x - 5y = 30

y intercept,Put x = 0

6*0 - 5y = 30

-5y = 30

y = 30 /-5

y = -6

x intercept,Put y =0

6x - 5*0 =30

6x = 30

x = 30/6

x =5

3(y+2)=30 one solution

Answers

The answer to this problem is 6

please help me find point D 10 points!!

Answers

on the graph point d is: (4,-9)

Tyler orders a meal that was $15
If the tax rate is 6.6%, how much will the sales tax be on Tyler’s meal?

Answers

Answer:

His total will be $15.99, so the sales tax is $0.99

Step-by-step explanation:

15 increase 6.6% =

15 × (1 + 6.6%) = 15 × (1 + 0.066) = 15.99

How much of each ingredient would you need to make an identical recipe that serve 3 people

Answers

Answer:

3 times of the normal amount

Step-by-step explanation:

i think

PLEASE HELP

James had a collection of 500 Matchbox cars at the beginning of the summer.

After the summer, James had traded some of his Matchbox cars and now he has only 485 Matchbox cars.

What is the percent decrease of his Matchbox car collection?

Answers

500 - 485 = 15
1% = 5 (b/c 5 x 100 = 500)
check: 5 x 3 = 15

Lost 3%

Kinda a bad explanation but yea

Will mark BRAINLIEST !!1
1/3+5/6+3/4+1/2 =
(as a fraction)

Answers

First you have to get the least common denominator. It looks like, in this case, it’s 12. Then, 1/3 would become 4/12, 5/6 would become 10/12, 3/4 would become 9/12, and 1/2 would become 6/12. Adding those all together, you get 29/12, or 2 and 5/12. Hope this helps and have a nice day!

Answer:

answer;

1/3+5/6+3/4+1/2 =29/12

Dena, Barb, Ryan, and Joe played a game where the lowest value wins. Dena's score was 3. Barbs score was -6. Ryan's score was -4. And Joe's score was -2. A) Joe's score beat Dena's score B) Ryan's score beat Barbs score C) Joe had the worst score D) Dena won the game

Answers

A) is the correct answer joe’s score beat dena’s score.

Answer:

A.) Joe's score beat Dena's score

Step-by-step explanation:

When you use negative numbers (Numbers that start with a negative sign (-)), the bigger the number after the negative, the smaller the number and also a negative number is always less than a positive number. This means that Joe's score beats Dena's score, because Joe's score is negative and Dena's score is positive, so Joe's score is lesser than Dena's score.

The owner of a garden center pays $12 for each birdbath. She sells them for 55% more than she paid. Decide whether each expression represents the selling price for b birdbaths.Choose Yes or No for each expression.A.12b1 1. 55(12b) u Yesu Nob. 12(0 . 45b) u Yesu Noc.12b(1. 55)u Yesu Nod. 12(0 . 55b) u Yesu Noe. 12b(1 1 0.55)u Yesu No

Answers

Answer:

[tex]Selling\ Price = 12b(1.55)[/tex]

Step-by-step explanation:

Given

[tex]Cost\ Price = \$12[/tex]

[tex]Selling\ Price = 55\%\ more[/tex]

Required

Write an expression for the selling price for b birdbaths

This selling price for 1 birdbath is calculated as:

[tex]Selling\ Price = Cost\ Price + 55\% * Cost\ Price[/tex]

Substitute 12 for Cost Price

[tex]Selling\ Price = 12 + 55\% * 12[/tex]

Factorize:

[tex]Selling\ Price = 12(1 + 55\%)[/tex]

Express percentage as decimal

[tex]Selling\ Price = 12(1 + 0.55)[/tex]

[tex]Selling\ Price = 12(1.55)[/tex]

For b birdbaths, the selling price is:

[tex]Selling\ Price = 12(1.55) * b[/tex]

[tex]Selling\ Price = 12b(1.55)[/tex]

The options are not clear; However [tex]12b(1.55)[/tex] answers the question.

whats the slope of the line and whats in on the graph?

Answers

Answer:

-1 is the slope

Step-by-step explanation:

The rise is up 1 and the run is sideways 1.

Hope it helps!

3.5 - 1.05 please help

Answers

Answer:

The answer is 2.45

Step-by-step explanation:

I used this magic device called a calculator!

lol

The answer is 2.45 hope this helps! <3

Please help me with this! I will mark as brainliest!!!

Answers

The equation is: x - 9 = -3

how can you tell that the slope of the line through (2,2) and (-3,5) is negative without calculating

Answers

The y values decrease as the x values increase. If you picture the points in your head, you’ll see that (2,2) is to the right and lower than (-3,5), creating a negative slope.

Please give me the correct answer

Answers

First you multiply (n+10) times 4 then you would have 4n+10=34 then you would subtract 10 from both sides 4n=44 then divide both sides by 4 to get n=11

−2x=x^2 minus 6,
Rewrite the equation by completing the square. please answer

Answers

Answer:

[tex](x+1)^{2} -5[/tex]

Step-by-step explanation:

[tex]-2x=x^{2} -6 \\x^{2} +2x-6\\(\frac{b}{2}) ^{2} =(\frac{2}{2}) ^{2} =1^{2} =1\\so, (x^{2} +2x+1)-6+1\\ x^{2} +2x+1=(x+1)^{2} \\-6+1=5\\(x+1)^{2} -5[/tex]

Sorry it took so long

Bruce drove 360 miles in 6 hours. If he continues at a consistent speed, how many more hours would he need to drive another 300 miles?

Answers

Answer:

5 hours

Step-by-step explanation:

If he drove 360 miles in 6 hours, that means he drives 60 miles per hour.

300 divided by 60 is 5, so he will need to drive for 5 more hours

Answer:

5 hours

Step-by-step explanation:

Find his speed in miles per hour:

360/6

= 60

So, his speed is 60 mph

To find how many more hours he would have to drive another 300 miles, divide 300 by 60:

300/60

= 5

So, he would have to drive 5 hours

susie begins a new walking program with 600m on the first day. Each day she will increase her walk by 200m.how many kilometers will she walk on day 18 of her program

Answers

Answer:

4200m

Step-by-step explanation:

200 times 18 is 3600

3600 plus 600 is 4200

Mark brainliest or I'll literally drink water

Please help me pleasee

Answers

Answer:

Step-by-step explanation:

Answer:

it would be the 2nd option

{(2,1) (1, 0) (0,1)}

Step-by-step explanation:

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