How do you solve this math problem-2(x+3y)=18

Answers

Answer 1
Greetings!

Solve for x.
[tex]-2(x+3y)=18[/tex]
Distribute the Parenthesis. How? Multiply all of the terms inside the parenthesis by the number outside the parenthesis.
[tex](-2)*x+(-2)*3y=18[/tex]
[tex]-2x-6y=18[/tex]
Add 6y to both sides.
[tex](-2x-6y)+6y=(18)+6y[/tex]
[tex]-2x=18+6y[/tex]
Divide both sides by -2.
[tex](-2x)/-2=(18+6y)/-2[/tex]
The Answer Is:
[tex]x=-9-3y[/tex]
[tex]x=-3y-9[/tex]

Hope this helps.
-Benjamin

Related Questions

Angle x measures 110 degrees. If angle x is rotated 60 degrees what is the measure of angle x

Answers

0 degree 60 degrees 110 degrees 170 degrees

Jenny has been saving her babysitting money for a class field trip to Washington, D.C. She wants to save $200.00 over three months. She saved $53.00 the first month and $67.00 the second month

Answers

Add the amounts for both months and subtract from whole which is 200
To estimate, $53 is about $50 and $67 is about $70 so she currently has about $120. She needs about $80 (or more) to reach her goal of $200.

To calculate this answer, you simply add $53 to $70 and get $120. You can then subtract $120 from $200 to get $80. So in the third month, Jenny must get at least $80 more dollars to get to her goal of $200. 

what does the expression 5n represent

Answers

Pretty sure it means 5 times "n"
For every value of 'n', it is multiplied by 5, or, in equation form, 5 x n

Hope this helps!

The sum of three consecutive odd numbers is 111. What is the smallest of the three numbers? (Use 8 steps to success)

Answers

(x-2)+x+(x+2)=111
3x=111
3x/3=111/3
x=37
x-2=
37-2=
35
x+2=
37+2=
39
The smallest of the 3 numbers is 35.
Check: 35+37+39=111

how would i create a real life example that can be modeled by the expression -2×4

Answers

bob is diving
he is at a depth of 2 meters below sea level
sam goes down 4 times as deep
how deep is sam

depth is a negative thing because you are 2 below 0 or -2
then we mutiply -2 by 4 to get 4 times to get -8 meters below sea level
The weather was -2 degrees outside and it got four times colder. What is the temperature now? (-8 degrees)

Write 2/3 of 4 as a fraction.

Answers

2/3(4)= 8/3
(2/3)(4/1)
(2)(4)/(3)(1)
=8/3
hope this helps!

When z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8?

Answers

The question states that z divided by 8, or z/8 has a remainder of 5. That means that 8 goes into z 5 times, but has a remainder of 5, meaning that 8*5+5=z=45. To find 4z, we multiply 45 by 4 to get 180. Next, we use long division to divide that by 8.

     22
   ______
8 | 180
     -160
     ____
       20
       -16
       ___
          4. This can be done due to that 8 does not go into 1, but 8*2=16, and 8*3=24. Keep in mind that since 8 doesn't go into 1, the 1 moves over with the 8 to form 18. Next, we have 18-16=2, and we add a 0 at the end because 180 has 3 digits. We repeat the process for 20, and at the end, since 8 does not go into 4, we have a remainder of 4     

The remainder when 4z is divided by 8 is 4

From the question, when z is divide by 8, the remainder is 5. But we do not know the quotient.

From the formula

[tex]\frac{Dividend}{Divisor}= Quotient + \frac{Remainder}{Divisor}[/tex]

Here, the dividend is z, divisor is 8, and the remainder is 5.

Let the quotient be x, then we can write that

[tex]\frac{z}{8} = x + \frac{5}{8}[/tex]

Now, to determine the remainder when 4z is divided by 8,

Multiply both sides of the equation by 4

[tex]4 \times\frac{z}{8} =4\times( x + \frac{5}{8})[/tex]

[tex]\frac{4z}{8} = 4x + \frac{20}{8}[/tex]

Then,

[tex]\frac{4z}{8} = 4x +2+ \frac{4}{8}[/tex] (NOTE: [tex]\frac{Remainder}{Divisor}[/tex]must be a proper fraction)

[tex]\frac{4z}{8} = (4x +2)+ \frac{4}{8}[/tex]

Compare this to the formula [tex]\frac{Dividend}{Divisor}= Quotient + \frac{Remainder}{Divisor}[/tex]

The remainder is 4

Hence, the remainder when 4z is divided by 8 is 4.

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John’s teacher gave him the following system of equations and asked him to find the point of intersection.

5x + 7 = y
9x – 5= y


Select the ordered pair that represents the intersection of the lines represented by the two equation.




A.(3, –8)

B.(3, 22)

C.(5.5, 44.5)

D.(5.5, 34.5)

Answers

The intersection is at (3,22). You can use the elimination method and solve for x. 
Step 1: multiply 5x+7=y by -1.
Step 2: Use elimination method and get 4x-12=0
Step 3: Solve for x=3
Step 4: Plug 3 in for x in one function an solve for y.
Step 5: Check your work.

The distance between city hall and the post office is 6 1/2 miles . The library site is 1 1/4 closer to city hall than to post office

Answers

26/5
6 1/2 divided 4 1/4

City hall to post office = 6 1/2 miles

City hall to library site = 1 1/4 miles

library site to post office = unknown. let it be x.    5 1/4 miles

1 1/4 miles + x = 6 1/2 miles

x = 6 1/2 miles - 1 1/4 miles

Find x.

1) convert the mixed fractions into fractions. 6 1/2 = 13/2 ; 1 1/4 = 5/4

x = 13/2 - 5/4

2) get the common denominator. 4 is twice as much as 2. multiply 13/2 by 2/2

13/2 * 2/2 = 26/4

3) Subtract the top numbers and put over the same denominator

x = 26/4 - 5/4 = (26-5) / 4 = 21 / 4

4) simplify the fraction

x = 21/4 = 5 1/4 miles from library site to post office.

The town of Lantana needs $14,000 for a new playground. Lantana elementary school raised $5,358, Lantana middle school raise $2834, Lantana high school raised $4,132.about how much more money do they need to raise choose the best estimate

Answers

5358+2834+4132=12324

14000-12324=1676

I think they need $1676

Answer:

2k/2,000

Step-by-step explanation:

we know 1676 turns into 2k

My sister is 3 times as old as I am. Five years from now, she will be twice as old as I will be. How many years old is my sister now?

Answers

Lets assume present ages as below:
Me: M
Son: S

5 years ago, I was 3 times as old as my son
M-5 = 3(S-5)
M-5=3S-15
M-3S=-10...........1

5 years hence, I will be twice as old as him,
M+5=2(S+5)
M+5=2S+10
M-2S=5.............2

equation 2-1
(M-2S) - (M-3S) = 5 - (-10)
S=15

If S=15, M=35
hope this helps

What is a scale drawing and how do you solve it? ( You can use any example to represent how to solve a scale drawing) Thanks!






-nana-

Answers

The definition of a Scale Drawing is- A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount (called the scale). The scale is shown as the length in the drawing, then a colon (":"), then the matching length on the real thing.
Well an example would be- Write the scale of the drawing, 1 cm = 1.5 m, as . Then write a proportion in which each ratio compares centimeters to meters. Let n represent the actual length of the boat. The actual length of the boat is 4.5 m. explaining is a little hard, but u can look up video examples to help u understand better

What is the answer I need to know

Answers

k = -18 to check, -4 + k/3 = -10 is the equation. -18/3 = -6, and -4 + -6 = -10. Mark as branliest if you can. :)

tony buy 3 packages of gum. each package has 5 packs of gum.each pack of gumhas 10 pieces in it how many pieces of gum are in all three packages

Answers

1 pack has 5 seperate packs, each with 10 pieces
=>50 pieces
50*3=150 pieces of gum

Tony has a total of 150 pieces of gum in three packages, calculated by multiplying the number of packages (3) by the number of packs per package (5) and the number of pieces per pack (10).

To calculate the number of pieces of gum Tony has in all three packages, we need to multiply the number of packages by the number of packs in each package, and then by the number of pieces in each pack. First, we have 3 packages and each package contains 5 packs of gum. So, the total number of packs in the three packages is:

3 packages * 5 packs per package = 15 packs of gum

Next, each pack has 10 pieces of gum, so the total number of pieces of gum in all the packs is:

15 packs of gum * 10 pieces per pack = 150 pieces of gum

Therefore, Tony has a total of 150 pieces of gum in the three packages.

Jordan is chopping wood for the winter. For 10 days in a row, he follows the same process: In the morning, he chops 20 pieces of wood, and in the evening, he chops an additional 30 pieces of wood On the 11th day, Jordan chops only 5 pieces of wood. Write a numerical expression with parentheses for the total number of pieces of wood Jordan chopped.

Answers

The numerical expression with parentheses for the total number of pieces of wood Jordan chopped is (20 + 30 ) 10  + 5.

What is a numerical expression with parentheses?

In mathematics, parentheses are used to indicate a portion of an equation or expression that must be solved first before any further calculations may be made. The solution substitutes the expression in the more complex mathematical equation; the portion between the two parentheses is considered as one integer.

Given, As winter approaches, Jordan starts cutting wood. He uses the same procedure for ten days straight: He cuts 20 pieces of wood in the morning and another 30 pieces in the evening. Jordan cuts just 5 pieces of wood on the eleventh day. Hence,

Equation for 10 days = (20 + 30) * 10

Equation for 11 days = (20 + 30) * 10 + 5

Therefore, Jordan cut a total of 20 pieces of wood, which is expressed mathematically as (20 + 30) 10 + 5.

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What is the explicit rule for this geometric sequence?

a1=23;an=9⋅an−1



an=9⋅(23)n

an=23⋅9n

an=9⋅(23)n−1

an=23⋅9n−1

Answers

I took it, and assuming I'm reading your question right, it's D: an=2/3*9^n-1

The Information about Geometric sequence is:

[tex]a_{1}=23 , a_{n}=9\times a_{n-1}[/tex]

→nth term of sequence = 9× (n-1) th term

Also , Common Ratio of a Geometric Sequence =[tex]\frac{\text{Second term }}{\text{First term}}[/tex]

[tex]\frac{a_{n}}{a_{n-1}}= \text{Common ratio}}=9\\a_{n}= a_{1}\times r ^{n-1}\\\\a_{n}=23\times 9^{n-1}[/tex]

Option 4 : [tex]a_{n}= 23 \times 9^{n-1}[/tex] is true.


The sketches below show cat's and Fred's driveways. If the perimeter of each others of their driveways is the same, what is the length and width of Cat's driveway?

Answers

Answer:

40,12

Step-by-step explanation:

u count how many x's u have.4(for the first square)

add up the regular numbers

so u should have4x+50

repeat for the second one

so u should have 4x+25=6x+20

solve

u get 2x=30 simplify

u get 15

now plug it in and there is ur answer

The value of length and width for Cat's driveway are  25 ft and 7.5 ft respectively.

What is a rectangle?

A rectangle is a type of parallelogram having equal diagonals.

All the interior angles of a rectangle are equal to the right angle.

The diagonals of a rectangle do not bisect each other.

Given that,

The length and width of Cat's driveway are 25 ft and x ft respectively.

And, the length and width of Fred's driveways are 2x ft  and x + 10 ft respectively.

The perimeter of a rectangle is given as,

2(l + b)

Substitute the values to obtain the perimeters as,

Perimeter of Cat's driveway = 2( x + 25) ft

And, perimeter of Fred's driveway = 2(2x + x + 10) ft.

As per the question,

2( x + 25) = 2(2x + x + 10)

=> ( x + 25) = (2x + x + 10)

=> x = 15/2

       = 7.5

Hence, the length and width of Cat's driveway are 25 ft and 7.5 ft respectively.

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At noon the temperature was 12°. It rose 8° during the afternoon, then dropped 28°by midnight. What was the temperature by midnight?

Answers

To find the temperature by midnight, you would start from 12 and since it rose, you would add 8 to 12 which would give you 20. Then since it dropped by 28, you would subtract 20 by 28 which would give you -8. This means that the temperature by midnight would be -8°.

The temperature by midnight will be 32°.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

Temperature is the randomness of the molecules known as temperature.

At noon the temperature was 12°.

It rose 8° during the afternoon, then dropped 28°by midnight.

Then the temperature by midnight will be given as,

⇒ 12° - 8° + 28°

⇒ 32°

Thus, the temperature by midnight will be 32°.

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Diana invested $3000 in a savings account for 3 years. She earned $450 in interest over that time period. What interest rate did she earn? Use the formula I=Prt to find your answer, where I is interest, P is principal, r is rate and t is time. Enter your solution in decimal form rounded to the nearest hundredth. For example, if your solution is 12%, you would enter 0.12.

Answers

If I=P*r*t, we can input 450 in for I, 3000 in for the principal (P, or the starting rate), and 3 for t=time because there were three years, resulting in 450=9000*r. Next, we can divide both sides by 9000 to get 0.05 or 5% as our answer.

What percent of 90 is 36

Answers

[tex]\dfrac{36}{90}=\dfrac{4}{10}=\dfrac{40}{100}=\boxed{40\,\% }[/tex]

one half of a number p is at least 100

Answers

so then P could be any number greater then or equal to 200,hope this helps,please vote me brainliest


The value of p can be 200 or more than 200.

What is Algebra?

Algebra is a branch of mathematics that deals with symbols and the arithmetic operations across these symbols. These symbols do not have any fixed values and are called variables. In our real-life problems, we often see certain values that keep on changing. But there is a constant need to represent these changing values. Here in algebra, these values are often represented with symbols such as x, y, z, p, or q, and these symbols are called variables. Further, these symbols are manipulated through various arithmetic operations of addition, subtraction, multiplication, and division, with an objective to find the values.

given:

one half of a number is at least 100.

So,

let the number be x

1/2*x= 100

x= 100*2

x= 200

Hence, the value of p ≥ 200.

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Write equations: Two times the difference of a number and 4 is the same as 5 less than the number - A number plus 5 is the same as 3 minus 4 times the number - Two times a number minus 9 is equal to 3 minus 4 times the number

Answers

2 ( x - 4 ) = x - 3
x + 5 = 3 - 4x
2 ( x - 9 ) = 3 - 4x

Imagine working with a younger sibling or student who is having trouble with the 9 times table. Create an algorithm to help the student learn how to do this easily. You may need to use outside resources to help you. If you do, make sure to document where you retrieved those sources.
Note: Remember an algorithm is a description on how to perform a process. Try using numbered steps or bullet points to list instructions. Your algorithm must be able to be easily followed by others so they get the same results as you did. For example, if you made an algorithm on how to make a chocolate cake, you'd want others to be able to follow it so that their cake ended up tasting as delicious as yours!




Describe your algorithm in the space provided below.

Answers

When 9 is multiplied by a number less than eleven, add 1 to the tens place and subtract 1 from the ones place.
Hi there!!!

what you need to do is add 1 to the tens place and subtract 1 from the one's place. Espeicially if the number is less than 11.\

Glad to help!!! Brainliest? I can really use it right now love :)

if Donna tool 20 minutes to read 60 pages of a 288-pages graphic novel,how long did she take to read the whole novel ,assuming that she read it all at the same rate?

Answers

Write and solve an equation of ratios:

    x            288 pages
----------  =  -------------- = 96 minutes (answer)
20 min       60 pages

There are 10 marbles in a bag. How many green marbles are in the bag if the probability of picking a green one is 3/10?

Answers

There would be 3 green marbles.
I think it means that they are 3 green marbles because if it is 3/10 possibility of picking a green one out of ten it is mabe 3

I am not sure

Adam says that the number 4 has four factors. Explain why this statement is incorrect.

Answers

Answer:

It is incorrect,

Step-by-step explanation:

The factors of 4 are 1, 2, and 4. The number 4 has three factors.

Although 2 × 2 is 4, the factor 2 is only counted once.

Final answer:

Adam's claim that the number 4 has four factors is incorrect; the number 4 has only three factors: 1, 2, and 4.

Explanation:

Adam's statement that the number 4 has four factors is incorrect. The factors of a number are the integers that can be multiplied together to result in the original number. The number 4 has three factors, not four. These factors are 1, 2, and 4 itself.

Here's why: The factor 1 is a universal factor because it can divide into any number without leaving a remainder. The number 2 is a factor of 4 because 2 x 2 equals 4. Finally, the number itself, 4 in this case, is always a factor because 4 x 1 equals 4. Listing out all the factors of 4, we would not find any number other than 1, 2, and 4 that can multiply together to produce 4.


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Calista has 4 one-dollar bills, 2 five-dollar bills, and 3 ten-dollar bills in her wallet. If she randomly chooses two bills, what is the probability that both of them are five-dollar bills?

Answers

The probability that Calista randomly chooses two five-dollar bills from her wallet is 1/36.

To calculate the probability of Calista choosing two five-dollar bills from her wallet, we start by determining the total number of ways she can choose two bills from her wallet, regardless of their denomination. Calista has a total of 9 bills (4 ones, 2 fives, and 3 tens), so the total number of ways to choose two bills is calculated using the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number of items and k is the number of items to choose.

The total number of ways to choose 2 bills from 9 is C(9, 2) = 9! / (2!(9-2)!) = 36. Next, we need to find the number of ways to choose 2 five-dollar bills from the 2 she has, which is simply C(2, 2) = 2! / (2!(2-2)!) = 1. The probability that both bills are five-dollar bills is then the number of ways to choose 2 fives divided by the total number of ways to choose any 2 bills, or P(both fives) = 1 / 36.

Traveling at 55 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 310 miles from Boston to Syracuse?

Answers

It takes about 6 hours
First find the answer in hours, and then convert your answer to minutes.

310 miles                                                              60 min
------------- = 5.636 hours, which, when mult. by ---------------
55 mph                                                                     1 hr

comes to 338 minutes (the nearest whole number).

If a linear equation is written in form y=1/2x-2, which method could be used to graph the line represented by the equation?

Answers

Final answer:

The linear equation y=1/2x -2 can be graphed by first plotting the y-intercept, then using the slope to plot additional points.

Explanation:

Such equations can be graphed using a few different methods. One common approach is plotting data pairs on a coordinate grid.

For the given equation y = 1/2x - 2, it is convenient to begin by identifying b, which is the y-intercept. In our case, b equals -2. This is the point where the line crosses the y-axis. Next we need to understand what the slope (1/2 in our equation) means: for every step we move to the right along the x-axis (in the positive direction), we move half a step up along the y-axis.

To graph the equation, you start at the y-intercept (0,-2) and use the slope to identify subsequent points. For instance, if x = 2, then y = 1/2*2 - 2 = -1.  Repeat this process with different x-values to plot enough points, and then connect them to draw the line written by the equation.

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Write the ratio 3:101 as a fraction, decimal, and percent

Answers

3/101

0.02970297029

2.97%

hope this helps
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