If x + 2y = 8, and x - y = 5, what is the value of x?

Answers

Answer 1

Answer:

x = 6

Step-by-step explanation:

Let's solve y for x + 2y = 8.

x + 2y = 8

2y = -x + 8

y = [tex]-\frac{1}{2}[/tex]x + 4.

Let's solve y for x - y = 5.

x - y = 5

y = x - 5

Since both equations have been solved for y, we can combine them together into one!

x - 5 = [tex]-\frac{1}{2}[/tex]x + 4

x [tex]+ \frac{1}{2}[/tex]x = 4 + 5

1.5x = 9

x = 6

Hope this helped! If not, please let me know!


Related Questions

What are the possible values of x and y for two distinct points, (5,-2) and (x, y), to represent a function?
The value of x can be ____
The value of y can be ____

(any real number, any real number except 5, any real number except 5 and -2)


Answers

Answer:

3, 0

Step-by-step explanation:

Subtract 2.

5 - 3 = 2.

-2 - 2 = 0

Answer:

The value of x can be

✔ any real number except 5

The value of y can be

✔ any real number

.Step-by-step explanation:

HELP PLS (picture below)

Answers

The answer is C
5.26x10^3 = 5,260

C

Because it will equal 5,260 but all the other are bigger

Two window washers start at the heights shown. One is​ rising, the other is descending. How long does it take for the two window washers to reach the same​ height? Explain.

21 ft high

rising 8 in./s

50 ft high

descending 11 in./s

After t​ seconds, the height of the rising window washer is exactly

nothing ​feet, and the height of the descending window washer is exactly

nothing feet. Setting these expressions equal to each other and solving for t yields the exact value t

nothing. Rounding to one decimal​ place, the window washers reach the same height after about

nothing seconds.

​(Simplify your​ answers.)

Answers

Answer: 18.32secs

Step-by-step explanation:

given data:

first washer

21 ft high

rising 8 in./s

second washer

50 ft high

descending 11 in./s

Solution:

initial height of first washer = 21 feet

1feet = 12inches

21 * 12 = 252inches

decending at a pace of 8inch/secs

= 252 + 8x

initial height of second washer

= 50 feet

= 50 * 12

= 600inches

descending at a pace of 11inch/secs

= 600 + 11x

At what time would they meet

252 + 8x = 600 + 11x

collect like terms

8x + 11x = 600 – 252

19x = 348

divide both sides by 19

19x/19 = 348/19

x = 18.32secs

Use the coordinates of the labeled point to find a point-slope equation of the line

Answers

Answer:

The answer would be C.

Answer:

c

Step-by-step explanation:

Which table represents the same relation as the set StartSet (negative 6, 4), (negative 4, 0), (negative 3, 2), (negative 1, 2) EndSet?

A 2-column table has 4 rows. The first column is labeled x with entries negative 6, 4, negative 4, 0. The second column is labeled y with entries negative 3, 2, negative 1, 2.

A 2-column table has 4 rows. The first column is labeled x with entries negative negative 6, negative 4, negative 3, negative 1. The second column is labeled y with entries 4, 0, 2, 2.

A 2-column table has 4 rows. The first column is labeled x with entries 6, 4, 3, 1. The second column is labeled y with entries negative 6, negative 4, negative 3, negative 1.

A 2-column table has 4 rows. The first column is labeled x with entries negative 4, 0, 2, 2. The second column is labeled y with entries negative 6, negative 4, negative 3, negative 1.

Answers

9514 1404 393

Answer:

A 2-column table has 4 rows. The first column is labeled x with entries negative negative 6, negative 4, negative 3, negative 1. The second column is labeled y with entries 4, 0, 2, 2.

Step-by-step explanation:

If you write the given ordered pairs in a column, you see what the table must look like:

  [tex]\begin{array}{cc}\underline{x}&\underline{y}\\-6&4\\-4&0\\-3&2\\-1&2\end{array}[/tex]

Answer:

B

Step-by-step explanation:

edge2021

reciprocal of the fraction 3/7 is​

Answers

Answer:

A simple example - the reciprocal fraction of 3/7 is 7/3. As you can see, a reciprocal of a fraction is just flipping the numerator and denominator.

Step-by-step explanation:

Answer:

7/3

Step-by-step explanation:

reciprocal, refliprical is a great way to remember how to solve. You just flip the fraction.

John needs to take a cab uptown and only has y dollars. The cab company charges a flat fee of $2.25 plus $0.55 per mile. If John has $12.52 and he finds a cab with the same flat fee that only charges $0.45 per miles, what is the maximum number of miles he will be able to travel, t the nearest tenth of a mile?

Answers

Answer:

Maximum distance covered by John = 22.8 miles

Step-by-step explanation:

The cab company charges a flat fee of $2.25 plus $0.55 per mile.

Amount of money John has = $y

Let the number of miles traveled in $y = x miles

If John finds a cab charging same fee and $0.45 per mile,

y ≤ 2.25 + 0.45x

y - 2.25 ≤ 0.45x

[tex]x\leq \frac{(y-2.25)}{0.45}[/tex]

Therefore, inequality representing the maximum distance covered by John,

[tex]x\leq \frac{(y-2.25)}{0.45}[/tex]

If, y = $12.52

[tex]x\leq \frac{(12.52-2.25)}{0.45}[/tex]

x ≤ 22.8 miles

Therefore, John will be able to travel the maximum distance = 22.8 miles.

Answer:

x ≤ 22.8 miles

John will be able to travel the maximum distance of 22.8 miles.

Step-by-step explanation:

I hope this helps

Which one?
A. B. C. or D?​

Answers

The answer is letter B

Answer:

B

Step-by-step explanation:

(7m+5m^3)-3m-4m^3

we simplify to get

4m+m^3 which can be rearranged

m^3+4m

Given m||n, find the value of x.

Answers

Answer:

27 degrees

Step-by-step explanation:

the 27 degrees

Answer:

27°

Step-by-step explanation:

X and 27° are both alternate interior angles (on opposite sides of the transversal, between the two parallel lines), which makes them congruent! So they are both 27°.

For each set of angle measurements, determine if they would form a triangle (Answer YES or NO for
each)
1. 120, 50, 10
2. 100, 91. 25
3. 90, 60, 30
4. 77, 54, 49
5. 177. 2,1

Answers

Answer:

1. yes

2. no

3. yes

4. yes

5. yes

Step-by-step explanation:

All triangles have 3 angle measurements that add up to 180

I did these all mentally so do double check :)

A baker used 8 bags of flour every 9 days. He used
of a bag cach day
L20 nens in 5 seconds What is the rate

Answers

Answer:

0.8 repeating or 8/9 bags a day

Step-by-step explanation:

Lea received a tip of $8 on a restaurant tab of $20. What percent tip did
she receive?

Answers

Answer:

40% tip

Step-by-step explanation:

If $20 is 1/5 of $100 and that $8 tip is part of those $20 you just have to multiply by five and thats your answer

PLEASE HELP ME, IVE BEEN IGNORED FOR THE PAST 30 MINUTES AND THE ONLY PEOPLE WHO DO ANSWER ARE FAKE PEOPLE WITH WRONG ANSWERS. (IMAGE IN THE QUESTION)

Given the data in the table, complete the sentence.

Using a line of best fit for this data to predict the value of y when x = 10 is an example of
A. Interpolation
B. Extrapolation
C. Correlation
D. Causation

Answers

Answer:

isnt that extrapolation?

Step-by-step explanation:

The original car price is p The total price is $22,480

Answers

Answer:

22,480

Step-by-step explanation:

dollar money economy and I was boutta say things the same thing as the among us?

PLSSSS HELP can someone show me how would this look on a graph f(x)=−3[x+2] I need all the points

Answers

Answer:

hope this helps :)

Step-by-step explanation:

Find the value for x that makes the given equation true. - -4(3x – 7) + 5x = -2x + 8​

Answers

Answer:

Okay this might be slightly confusing but I'll try to make it simple. x = -10

Step-by-step explanation:

-4 ( 3x - 7 ) + 5x = -2x + 8 1. get rid of parenthesis first. -4 times 3x = -12x and -4 times -7 is 28

-12x + 28 + 5x = -2x + 8 2. Combine any like terms on each side of the equation. -7x + 28 = -2x + 8 3. Get rid of the smallest x value by adding to both sides -7x

+7x +7x

28 = -2x + 8 4. subtract 8 from both sides to get rid of it. (you wanna get x alone)

-8 -8

20 = -2x 5. Divide both sides by -2 to get 1x (which is x)

/-2 /-2

x = -10

Melanie had 3 pounds of dried fruit. She packed the dried fruit into bags of 3/8 pound each. How many bags of dry fruit does she pack?

Answers

Answer: 8 bags

Step-by-step explanation:

From the question, we are informed that Melanie had 3 pounds of dried fruit and that she packed the dried fruit into bags of 3/8 pound each.

For us to get the number of bags of dry fruit does she will pack, we have to divide 3 pounds by 3/8 pounds. This will be:

= 3 ÷ (3/8)

= 3 × (8/3)

= 8

Therefore, she will pack 8 bags of dried fruit.

what expression is equivalent to -0.2-4.9?

Answers

First, is there any choices?

Heeeeeeeeelp pls I need help

Answers

Answer:

I am pretty sure that is is 64

Step-by-step explanation:

but i used a calculator soooo

A line is represented by the equation y=3x+5. what are the coordinates

Answers

The 3x is the x axis and the y is 5 so it would be (3,5).

Which of the following graphs is the solution set of -10 < 3x - 4 < 8?

Answers

Answer:

Its the first one . A

Step-by-step explanation:

The solution set for the given inequality is {-1, 0, 1, 2, 3}. Therefore, option A is the correct answer.

What are inequalities?

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

The given inequality is -10<3x-4<8.

Now, -10<3x-4

Add 4 on both the sides of an inequality, we get

-6<3x

-2<x

Now, 3x-4<8

Add 4 on both the sides of an inequality, we get

3x<12

x<4

-2<x<4

Solution set is {-1, 0, 1, 2, 3}

Therefore, option A is the correct answer.

To learn more about the inequalities visit:

https://brainly.com/question/20383699.

#SPJ2

The mean temperature for the first 4 days in January was -12°C.
The mean temperature for the first 5 days in January was -13°C.
What was the temperature on the 5th day?

Answers

Answer:

-17

Step-by-step explanation:

Given

The mean temperature for the first 4 days = -12°CThe mean temperature for the first 5 days = -13°C

To find

The temperature on the 5th day

Solution

Total of 4 days = 4*(-12) = -48°CTotal of 5 days = 5*(-13) = -65°C

The difference is the temperature on the 5th day:

-65 - (-48) = -17°C

Answer:

-17

Step-by-step explanation:

Given

The mean temperature for the first 4 days = -12°C

The mean temperature for the first 5 days = -13°C

To find

The temperature on the 5th day

Solution

Total of 4 days = 4*(-12) = -48°C

Total of 5 days = 5*(-13) = -65°C

The difference is the temperature on the 5th day:

-65 - (-48) = -17°C

How many terms are in the expression below?
4xy + 3y - 2+ 2y - xy

Answers

Answer:

3

Step-by-step explanation:

you have the single numalrial term, you have the x terms, and the y terms

Joey wants to save up enough money to buy a new baseball bat that costs $200. He already has $50. If Joey makes $40 per week, write an inequality that represents the number of weeks (w) until he will have enough money?

Answers

Answer:

50+40w=200

Step-by-step explanation:

200-50=150

150 divided by 40=3.75 so 3 1/2 weeks

5 less than 3.1 times a number n plz help me

Answers

Answer:

-2.1 i guess

Step-by-step explanation:3.1 minus 5 =-2.1

The required expression will be x = 3.1 n - 5

It is given that a number is 5 less than 3.1 times a number "n" .

We have to find the expression for the given statement.

What is algebra ?

Algebra is the branch that deals with various symbols and the arithmetic operations such as multiplication , division , etc.

Let's assume the number be x.

So ,

3.1 times of number n = 3.1 × n = 3.1 n

Let's subtract 5 from the above number, i.e.,

3.1 n  - 5

and , the required expression will be ;

x = 3.1 n - 5

Thus , the required expression will be x = 3.1 n - 5

To learn more about algebra click here ;

https://brainly.com/question/26479183

#SPJ2

WILL MARK YOU BRAINLIEST!!!!!!

Answers

Answer:

a b d e

Step-by-step explanation:

yes its correct

ASAP
Factor Completely
-3x^2+6x+9=

Answers

Answer:

3(−x−1)(x−3)

Step-by-step explanation:

Answer:
(3x+3)(-x+3)
Check:
-3x^2+9x-3x+9
-3x^2+6x+9

geometry help pls right triangles i’ll mark brainlist

Answers

Try doing It with a calculator
I think the answer is 6

Jose and his mother decide to bake a cake for his Father's birthday. Jose notices that after mixing the cake batter and placing it in the oven he says bubbles forming in the cake as it begins to rise. What explains this Phenomenon? A. Physical Change B. Chemical Change C. Neither physical nor chemical change D. Both physical and chemical change

Answers

Answer:

B) Chemical Change

Step-by-step explanation:

Physical change only changes the physical appearance of good, their chemical properties remaining same. These are usually reversible. Eg : Cutting a cake

Chemical change changes the physical composition of the product(s) involved. These are usually not irreversible. Eg : Baking of a cake, getting bubbles during bake process meanwhile

NEED HELP ASAP
SOLVE FOR V
ryv-tu=w

Answers

Answer:

v= w/ry+tu/ry

Step-by-step explanation: Isolate the variable then Divide each side by the factors that don't contain the variable.

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