Evaluate
2x - Y when x= 5, y=3

Evaluate2x - Y When X= 5, Y=3

Answers

Answer 1

Answer:

the answer is 7

Step-by-step explanation:

2x-y

2*5 - 3

10 - 3

7                                  


Related Questions

Helppppp pleazeee!!!

Answers

I believe the answer is Chord AB

Answer:

wooo

Step-by-step explanation:

PLEASE PLEASE PLEASE HELP ME!!!!!!

Answers

Answer:

C

Step-by-step explanation:

The solution to a system of equations given graphically are at the points of intersection of the 2 graphs.

The graphs intersect at (- 2, - 4 ) and (4, 8 )

Thus the solutions to the system are (- 2, - 4) and (4, 8 )

A container is filled with 100 grams of bird feed that is 80% seed. Tom and Sally want to mix the 100 grams with bird feed that is 5% seed to get a mixture that is 40% seed. Tom wants to add 114 grams of the 5% seed, and Sally wants to add 115 grams of the 5% seed mix. What will be the percent of seed if Tom adds 114 grams?

Answers

Answer:

Initially, we had:

100 grams of a mixture that is 80% seed, (or 0.8 in decimal form)

This means that the quotient between the mass of seeds and the total mass of the mixture is equal to 0.8

Then the mass of seeds, x, can be calculated as:

x/100g = 0.8

x = 0.8*100g

x = 80g

We also have another mixture, that is 5% seed (or 0.05 in decimal form)

This means that in X grams of this mixture, there will be y grams of seeds, such that:

y/X = 0.05

y = 0.05*X grams

Now, we want to create a mixture that is 40% seeds (or 0.4 in decimal form).

Let's do this.

If we add X grams of the 5% mixture, the total mass will be:

M = 100g + X.

The total mass of seeds will be:

m = 80g + X*0.05

and we want that the quotient between the mass of seeds and the total mass to be exactly 0.4

m/M = 0.4

(80g + X*0.05)/(100g + X) = 0.4

Let's solve this for X.

(80g + X*0.05) =  0.4*(100g + X)

80g + X*0.05 = 40g + X*0.4

80g - 40g = X*0.4 - X*0.05

40g = X*0.35

40g/0.35 = X = 114.2g

If we want the mixture to be exactly 40% seeds, we need to add 114.2g of the 5% mixture. (We already can see that Tom is closer to the exact result than Sally)

If we add 114g, like Tom wants, we will have:

M = 100g + 114g = 214g

m = 80g + 0.05*114g = 85.7g

m/M = 85.7g/214g = 0.4005

This is a really good aproximation, if we write this in percentage form this would be:

0.4005*100% = 40.05%

Randall collects postcards that his friends
send him when they travel. He can put
6 cards on one scrapbook page. How
many pages does Randall need to fit
42 postcards? (SHOW YOUR WORK/STEPS)

Answers

Answer:

7pages

Step-by-step explanation:

42÷6= 7

You are dividing how many postcards you have with how many you can fit on one page. If you divide them, you will get your answer.

Randall needs 7 pages to fit 42 postcards.

Which of the following is an equivalent form of the mixed number -12 3/4?
- 45/4
- -51/4
- -48/4
- -45/4

Answers

Answer:

[tex]- \frac{45}{4}[/tex]

Step-by-step explanation:

Step one:

given the information

[tex]-12 \frac{3}{4}[/tex] ----------------this is a mixed fraction with a negative integer number

let us convert this to a proper fraction

Step two:

Multiply the integer by the denominator and add the numerator, we have

[tex]=(-12*4+3)/4\\\\=(-48+3)/4\\\\=-45/4[/tex]

The third option is correct

HELP!! Who ever does all these problems gets a brainlist and 50 points

Answers

Answer:

760cm = 7.6m

2485m = 2.485km

3090g = 3.09kg

205ml = 0.205ml

It seems I only get 30 points, ah well.

GIVING BRAINLIEST AFTER TWO ANSWERS ARE GIVEN!!! WILL CHOOSE THE BEST ONE!!! ( the answer is either yes or no )

Answers

Answer:

No

Step-by-step explanation:

The first triangle slope is 12 [tex]\sqrt{37}[/tex] while the second one is 24[tex]\sqrt{37}[/tex] . In order to be on the same line both slopes have to be the same

This is in edge and I’m timed!!!

Answers

Answer:

C

Step-by-step explanation:

It’s 1.333333333(repeating) and that is equal to 1 1/3

Answer:

C-1 1/3

Step-by-step explanation:

The answer in decimal form is 1.33333333*repeating* and that is equal to 1 1/3 in fraction form, so C would be correct.

Charlie can spend up to 10$ on lunch. He wants to buy a turkey sandwich, a bottle of soda,
and x pounds of macaroni. If a turkey sandwich cost $3.75, a bottle of soda cost $2.25, and
macaroni costs $2 per pound, find the range of pounds of macaroni that Charlie can buy.

Answers

Answer:

he can buy 2 pounds of macaroni

Step-by-step explanation:

first you add up the 3.75 and the 2.25 from the turkey and the soda. it ranges to 6 dollars. then if each macaroni pound is 2 you will be able to buy 2 pounds from the 4 dollars you have lefy

Answer:

Charlie can buy 1 or 2 pounds of macaroni

Step-by-step explanation

If we add up the cost of the turkey sandwich and the soda, we get $6.00. Charlie has $10.00 to spend, so when he buys the sandwich and soda, he will have $4.00 left to spend. If the macaroni is $2.00 per pound, then Charlie can buy 1 or 2 pounds of macaroni.

hope this helped

Find the unit rate
a. 5 movie tickets for $25.00
b. mowed 5 yards for $35.00
c. 6 calculators cost $240.00
d. 8 dollars for 2 cans of tuna ​

Answers

Answer:

A.  $5

B.  $7

C.  $40

D.  $4

Step-by-step explanation:

To find the unit rate, you need to divide the cost by the amount.

A.  $25/5 = $5 for a movie ticket

B.  $35/5 = $7 for one yard

C.  $240/6 = $40 for a calculator

D.  $8/2 = $4 for a can of tuna

2=b-7 solve this question please​

Answers

Answer: 9=b

Step-by-step explanation:

2=b-7

Add 7 to both sides

2+7=b

9=b

Answer:

b = 9

Step-by-step explanation:

2 = b - 7

add 7 to both sides

9 = b

I don’t know the answer

Answers

Answer:

?=1O or 15

Step-by-step explanation:

50 points the question is in the picture.

Answers

Answer:

Every minute the coffee cooled down 2 degrees F every minute  

Step-by-step explanation:

so i took 2 to see how many times it went into 22 then i took 54 and went 2 degrees for each minute.

Answer:

-2.4°F

Step-by-step explanation:

Temperature change is:

- 54°F over 22 1/2 minutes

Rate of change in a minute:

-54 / 22 1/2 = -54 / 45/2 =-108/45 =-2 18/45 =-2 2/5 =-2.4°F

1. Convert 0.3 to a fraction and decimal.
2. Convert 9% to a fraction a decimal.
3. Convert 3/8 to a decimal and a percent.

Answers

Answer:

1=30%

2=0.09

3=37.5%

these is the answer

Answer:

1. 3/10 , 0.3 , 30%

2. 9/100 , 0.09

3. 0.375 , 37.5%

Step-by-step explanation:

i dont know if you meant the first one to be fraction and decimal or fraction and percent but i put both

could u plz answer this
2x-7=13
3x+4=25​

Answers

Answer:

x=10

Step-by-step explanation:

What is the mean absolute deviation of the following set of data 4 6 2 8

Answers

Answer:

srry i really need points

Step-by-step explanation:

On Saturday, you bowl at Show Place Lanes, where renting shoes costs $3 and each game bowled is $4.50. On Sunday, you bowl at Pinz where the shoe rental is $6 and each game bowled is $3. If you spent the same amount each day, how many games, g, were bowled?​

Answers

Answer:

x=2

2 games.

Step-by-step explanation:

3 + 4.50x = A

6 + 3x = A

3 + 4.5(2) = 12

6 + 3(2) = 12

explain in your own words one way you could turn 9/25 into a decimal.




YOU HAAVE TO EXPLAIN

Answers

Answer

Step-by-step explanation:

If 25 goes into 100 four times, then multiple 9 x 4 and then make it into a precent. 9 x 4 = 36, would equal .36

Answer:

To turn 9/25 into a decimal, you could turn the denominator to 100. In order to do this, you can multiply both the numerator and denominator by 4. 9/25 x 4/4 = 36/100. 36/100 converted into a decimal is 0.36.

Step-by-step explanation:

I hope this helped! If it is correct, mark as brainliest :)

which expression is equivalent to -2(5x - 0.75)

Answers

Answer:

5(5x - 0.34

Step-by-step explanation:

Answer:

The correct answer is −10x+1.5

Step-by-step explanation:

−2(5x−0.75)

=(−2)(5x+−0.75)

=(−2)(5x)+(−2)(−0.75)

=−10x+1.5

If you are seeing this, This is a simple sign to calm down and relax. You have been working very hard and your burned out. Take a break from the stress of trying to find your answers. Its okay. Ask your questions. Take a break. Breathe. You will get your assignments done. You will pass your assignments. You will get good grades. Just relax and ask me your questions. ​

Answers

Answer:

Dang they deleted my last answer

Step-by-step explanation:

I wonder why people ACTUALLY report stuff like this....

Answer:

thanks

Step-by-step explanation:

Which temperatures are listed in order from coldest to warmest?

−6°, −2°, 0°, 4°

0°, −2°, 4°, −6°

−6°, 4°, −2°, 0°

−2°, −6°, 0°, 4°

Answers

Answer:

the temperature list from coldest to warmest is :-2,-6,0,4

Find the x-intercept: 5y-2x=17

Answers

x-intercept:

(−17/2, 0)

y-intercept:

(0, 17/5)

a rectangular room is 6 meters longer than it is wide, and it's perimeter is 32 meters. Find the dimensions of the room​

Answers

Answer:

length: 11m. width: 5m. Hope this helps

i need the answer as soon as possible
Graph the following system of inequalities.

Answers

Answer:

X i think

Step-by-step explanation:

What is the product?
2013
-2
2
2 0
- 2
Worth 35 pts

Answers

Answer:

...

Step-by-step explanation:

Answer:

-2 / 0

Step-by-step explanation:

you multiply 2 and -1 and 2 and 0 and you get -2 and 0.

Which number represents 50% of 74?
35
37
38
39

Answers

Answer: 37!!!

Step-by-step explanation:

1. 50% equals .5 in decimal form.

When converting a percentage to decimal, divide by 100 or move the decimal point to the left twice.

2. The word of means multiply so we multiply .5 by 74.

3. We get 37!

hope this helped, brainliest plsss :))))

I was the first one!

37! 7+7=14 and carry the one over so 3+3+1=7 so 50% of 74 is 37

I NEED HELP ITS TIMED​

Answers

Answer:

Binomial

Step-by-step explanation:

This is because it has two terms

To raise money for the
music program, your
choir sells programs for
$.50 and CDs of its music
for $5 at a concert. It costs
$.15 to produce each
program and $1.75 to
produce each CD.
Everything sells for $400,
yielding a profit of $265.
How many CDs were
made?

Answers

Answer:

x = 60

y = 200

Step-by-step explanations:

Selling price:

Price of program = $0.5

Price of music = $5

Cost of production :

Program = $0.15 per program

CD = $1.75 per CD

Total Revenue = $400

Total Profit = $265

Let

Number of CD's = x

Number of program's = y

(0.5y + 5x) = 400

0.5y = 400 - 5x

y = (400 - 5x) / 0.5

y = 800 - 10x (1(

Cost of production:

1.75x + 0.15y

Profit = Total Revenue - Total cost of production

5x + 0.5y - 1.75x + 0.15y = 265

3.25x + 0.35y = 265 (2)

Put y = 800 - 10x in (2)

3.25x + 0.35y = 265

3.25x + 0.35(800 - 10x) = 265

3.25x + 280 - 3.5x = 265

-0.25x = - 15

Divide both sides by -0.25

x = -15/ -0.25

x = 60

y = 800 - 10x

= 800 - 10(60)

= 800 - 600

= 200

y = 200

A field is in the shape of a Rectangle. The width
of the rectangle is x yards. The length of the
rectangle is 3 more than the width. Write an
expression for the perimeter of the field.

Answers

Answer:

4x+6

Step-by-step explanation:

The perimeter of the field can be obtained by calculating the distance around the field.

in this case, we know that the shape of the field is a rectangle.

The perimeter of a rectangle can be obtained by using the formula

[tex]2(l+b)[/tex]

The width of the rectangle is given as x yards

The length of the rectangle is given as x +3 yards

Therefore, an expression to determine the perimeter of the rectangle can be given as

[tex]2(x+3+x)\\=2(2x+3)\\=4x+6[/tex]

Peter is calculating the interest earned on a
deposit of $275 in an account that earns 8%
simple interest after 12 years.

Answers

Answer:

a) He substituted 0.8 instead of 0.08.

b) $264

Step-by-step explanation:

The full question is: a. What did Peter do incorrectly? b. What is the correct amount of interest?

Using the equation [tex]I=prt[/tex], we can substitute the given values.I = 275 x 0.08 x 12I = 264
Other Questions
Oh so you like math name every digit in pi All of the following actions lead to the payment of a credit card fee EXCEPT... Which quote summarizes President Woodrow Wilson's approach to the Paris Peace Conference? (3 points)a. "Speak softly and carry a big stick."b. "We have nothing to fear but fear itself."c. "The world must be made safe for democracy."d. "Government is not the solution to our problem." 33+44 please help me can anyone help and explain why this is either proportional or not? urgent!! (it needs an explanation too) Which phrase is most similar in meaning to enslaved? Pick one. O To make someone a slave O To ship people across an ocean O To exchange people with goods O To grow crops on a plantation Please help! I need help on this ! I will give brainliest!Find the equation of a line that is parallel to the line x = 12 and contains the point (-6,4).The equation of the parallel line is . (Type an equation.) cos im ah ah in the stars tonight___________________________________ Solve the equation below using a graphingcalculator/desmos. (3 points)12. e* - In 2x = 3.7I What molecule promotes guanosine monophosphate synthesis to regulate the balance of nucleotide pools?A) ATPB) UTPC) CTPThe structures of hypoxanthine and allopurinol are shown above. It is known that allopurinol is an inhibitor of the enzyme xanthine oxidase. What type of inhibitor is allopurinol likely to be?A) UncompetitiveB)CompetitiveC)Allosteric hi my name is trey and i have a basketball game tomorrow, well i'm a point guard and i got shoe game. Tips? the importance of reading a circuit diagram to interpret a wiring diagram? HELP ME PLSS,, I need help Find the first five terms of the sequence given by a 1 = 2, a n = 3 a n -1 - 1. Which of the following is the minimum amount of work done by a hydraulic liftto raise a 150-kg aluminum block 2.0 m vertically? HELP ILL GIVE BRAINLIEST AND LOTS OF POINTS Use the formula d = rt to nd the distance, rate, or time 24. r = 5, t = 12 25. d = 24, t = 8 When a cable company is awarded sole possession to franchise in a community, that franchise is now a: Group of answer choices are filipino salads healthy food? why? Organize the steps involved in the colorization of an old black-and-white photo.Use dodge, burn, and noise tools.Restore the old photo.Adjust the RGB (or CMYK) ratio.Select the desired area. What is the energy change taking place when plants make food in the presence of sunlight? Potential energy is transformed into kinetic energy.Kinetic energy is transformed into potential energy.Chemical energy is transformed into radiant energy.Radiant energy is transformed into chemical energy.