What is the value of x in the equation 3x-y = 30, when y = 15?

What Is The Value Of X In The Equation 3x-y = 30, When Y = 15?

Answers

Answer 1

62663773828hfnmdmsmlap62sjdldleldlb

f

Answer 2

[tex]x=200[/tex]

Explanation:

Okay so we can start by substituting in [tex]y[/tex] as we know what it is already:

[tex](\frac{1}{5} )x-(\frac{2}{3} )(15)=30[/tex]

Now at this stage we could use a calculator to figure out what [tex]\frac{2}{3}[/tex] of [tex]15[/tex] are though a bit of mental math is as easy:

[tex](\frac{15}{3} )[/tex] · [tex]2=[/tex] [tex]5[/tex] · [tex]2[/tex]

okay so now we have:

[tex](\frac{1}{5} )x-10=30[/tex]  add 10 to both sides to get rid of the [tex]-10[/tex]

[tex](\frac{1}{5})x=40[/tex] let's get rid of that fraction by multiplying by [tex]5[/tex]

 and there's the solution for x

We can check we got this right by substituting it back into the original equation with the known y:

[tex](\frac{1}{5} )(200)-(\frac{2}{3})(15)=30[/tex]

now,  and we already know what out of is so :

that means

which is ✓

Therefore we know our solution is right.


Related Questions

I need help, please. ​

Answers

[tex]p = 2(l + w) = 2.(15 + 12) = 54 cm[/tex]

math read please IMA WRITE USELESS WORDS CONTINUE

Answers

Basically just show using numbers how the shapes are not alike like what makes them different make some numbers up and do it just like that and explain how the shapes won’t Align with each other

which of the following expressions to 36x + 24y? choose all that apply.

6x (6+4y)
6(6x + 4y)
12(36x + 24y)
12(3x + 2y)
4y(9x + 6)
4(9x + 6y)

Answers

6(6x + 4y)

12(3x + 2y)

4(9x + 6y)

2x - 6 >8
What is the Second Step?

Answers

Answer:

8

Step-by-step explanation:

i used the calculator

1.Add 66 to both sides.

[tex]2x=8+6[/tex]

2. Simplify  8+6  to 14

[tex]2x=14[/tex]

3.  Divide both sides by 22.

[tex]x=14/2[/tex]

4. Simplify [tex]14/2[/tex] to [tex]7[/tex]

Then your answer should be [tex]x=7[/tex]

 

A 125 mililiter solution of fabric dye contains 5 ml of hydrogen peroxide what percent concentration of hydrogen peroxide?

Answers

The answer is 67%, good luck
The answer is 6.25 because I said so

In the 2004 Summer Olympics, Adam van Koeverden of Oakville, Ontario, won two medals. He won the gold medal in the men’s 500 m kayak race, with a time of 1 min 37.9 s. He also won the bronze medal in the 1000 m race, with a time of 3 min 28.2 s. In which race did he row with greater speed?

Answers

Answer:

Adam van Koeverden at the 2004 Olympic at Athens. Van Koeverden paddled to victory in the Men's K1 500 m kayaking event, adding a gold medal to the bronze he won days earlier in the 1000 m to become Canada's first double medallist in the summer Olympics since Donovan Bailey and Clara Hughes at Atlanta in 1996.

Step-by-step explanation:

Pls mark me as brainliest

Veggie’s Market sells 5 avocados for $2.30 and 3 tomatoes for $2.97. Martina buys 2 avocados and 1 tomato. What is the total cost of her veggies?

Answers

Answer:

$1.91

Step-by-step explanation:

$2.30 / 5 = $0.46

$2.97 / 3 = $0.99

2 * $0.46 + $0.99 = $1.91

Answer:

1.91

Step-by-step explanation:

divide 2.30 by 5 and u get 0.47 and she bought 2 avocados so 0.47 plus 0.47 is 0.92 and 2.97 divided by 3 is 0.99 so 0.99 plus 0.92 is 1.91 dollars

STATE THE MODULES THAT ARE INCLUDED WHEN LEARNING CALCULUS I.

Answers

Answer:

Calculus is the branch of mathematics studying the rate of change of quantities (which can be interpreted as slopes of curves) and the length, area, and volume of objects. The chain rule is a formula for the derivative of the composition of two functions in terms of their derivatives.

Plz help I need help plz

Answers

It’s the third answer

Exits on an interstate are numbered consecutively.
The distance between Exit 5 and Exit 6 is 3.2 miles.
The distance between Exit 6 and Exit 7 is 1.1 miles farther than the distance between Exit 5 and Exit
6.
The distance between Exit 6 and Exit 8 is 2.4 miles farther than the distance between Exit 5 and Exit
7.
The distance between Exit 7 and Exit 8 is
miles.

Answers

9514 1404 393

Answer:

  5.6 miles

Step-by-step explanation:

Let the following distances between exits be defined:

  a = exit 5 to 6

  b = exit 6 to 7

  c = exit 7 to 8

Then the given relations are ...

  a = 3.2

  b = 1.1 +a = 4.3

  (b +c) = 2.4 +(a +b)   ⇒   c = a +2.4 = 5.6

The distance between exits 7 and 8 is 5.6 miles.

Factor use please help I need this and quick

Answers

[tex]8a^{3} +\sqrt{3^{2}*3 } b^{3}[/tex]

[tex]8a^{3} +(\sqrt{3^{2} } *\sqrt{3})b^{3} \\\\[/tex]

[tex]8a^{3} +(3^{\frac{2}{2} } *\sqrt{3} )b^{3}[/tex]

[tex]8a^{3} +(3*\sqrt{3} )b^{3}[/tex]

[tex]8a^{3} +3*\sqrt3} *b^{3}[/tex]

Given f(x)=3x(to the scnd power)−5x−2. What is the value of f(−2/3)? 1 8/3 3 10/3

Answers

Given:

[tex]f(x)=3x^2-5x-2[/tex]; find f(-2/3)

Answer:

[tex]f(-\frac{2}{3} )=\frac{8}{3}[/tex]

Step-by-step explanation:

1. Insert [tex]-\frac{2}{3} \\[/tex] as X; [tex]f(-\frac{2}{3}) = 3 (-\frac{2}{3} )^2 - 5 (-\frac{2}{3}) - 2[/tex]

2. Solve equation; [tex]f(-\frac{2}{3} )=\frac{8}{3}[/tex]

MATH WEEK 5 DISCUSSION

Answers

5 ————————————————————————-

The width of a rectangular rug is 4 1/4 inches longer than twice its length. If the perimeter of the rug is 56 1/2 inches, which equation represents this situation?

Answers

The question requires calculating the perimeter of the rectangular r ug

The equation which represent the situation is 113/2 = 6x + 34/4 and length is 8 inches and width is 20 1/4 inches

Given:

let

length of the rectangular r ug = x inches

Width of a rectangular r ug = (2x + 4 1/4) inches

Perimeter of the r ug = 56 1/2 inches

Perimeter of the r ug = 2(length + width)

56 1/2 = 2{x + (2x + 4 1/4)

113/2 = 2(x + 2x + 17/4)

113/2 = 2(3x + 17/4)

113/2 = 6x + 34/4

113/2 - 34/4 = 6x

(226-34) / 4 = 6x

192/4 = 6x

48 = 6x

divide both sides by 6

x = 48/6

x = 8 inches

So,

length of the rectangular r ug = x inches

= 8 inches

Width of a rectangular r ug = (2x + 4 1/4) inches

= 2(8) + 4 1/4

= 16 + 4 1/4

= 20 1/4 inches

Therefore, the equation which represent the situation is 113/2 = 6x + 34/4 and length is 8 inches and width is 20 1/4 inches

Read more:

https://brainly.com/question/10452031

William has a lemonade stand. Today he made $89.62 in lemonade sales and one third that amount in cookie sales. How much money did William make altogether?

Answers

Answer:

$119.49 (rounded to the nearest cent.)

Answer: 119.4933333 would be the actual answer but rounded to the nearest cent it would be 119.49

89.62/3 = 29.8733333....... 89.62 + 29.8733333 = 119.4933333

How does the graph of g(x) = −(x − 2)4 compare to the parent function of f(x) = x4?

Group of answer choices

g(x) is shifted 2 units to the right and reflected over the x-axis.

g(x) is shifted 2 units to the left and reflected over the x-axis.

g(x) is shifted 2 units to the right and 1 unit up.

g(x) is shifted 2 units to the right and 1 unit down.

Please HELP me

Answers

Answer:

g(x) is shifted 2 units to the right and reflected over the x-axis.

Step-by-step explanation:

(10pts) Ivan bought three games and paid $65 for all three. The second game was 50% more expensive than the first one. The price of the third game was 50% of the price of the second game. Find the price of the first game.
PLSSSSSSSS HELPPPP NOWWWWWW!!!







Answer:

The price of the first game is $.

Answers

We are required to find the price of the first game

The price of the first game is $20

Given:

let

price of the first game = x

price of the second game = x + 50% of x

= x + 0.5x

= 1.5x

Price of the third game = 50% of 1.5x

= 0.5 × 1.5x

= 0.75x

Total cost of game = $65

Total cost of game = price of the first game + price of the second game + Price of the third game

65 = x + 1.5x + 0.75x

65 = 3.25x

divide both sides by 3.25

x = 65 ÷ 3.25

x = 20

Therefore, the price of the first game is $20

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https://brainly.com/question/291220

Mae receives $79.00 for working one 10-hour day. One day she had to stop after working 7 hours because of a doctor’s appointment. How much did she make that day? I need help

Answers

1. First we divide $79.00 by 10 hours to see how much Mae gets payed each hour.
79.00 divided by 10 = $7.90/hr

2. Multiply $7.9 by 7 hours = $55.30

Answer:

Mae got payed $55.30 for working a 7 hour day

Suppose that you and a friend are playing cards and decide to make a bet. If you draw three face cards, where a face card is a Jack, a Queen, or a King, in succession from a standard deck of 52 cards without replacement, you win $40. Otherwise, you pay your friend $10. What is the expected value of your bet? Round your answer to the nearest cent, if necessary.

Answers

Answer:

Step-by-step explanation:

Expected value of the bet =

P(you make the correct draw) * 40 + P(you do not make the correct draw) * (-10) =

(4/52)(4/51)(4/50) * 40 + (1 - (4/52)(4/51)(4/50)) * (-10) =

(64/132600) * 40 + (1 - 64/132600) *(-10) =

64/3315 + (132536/132600) * (-10) =

64/3315 - (132536/13260) =

64/3315 - 33134/3315 =

-33070/3315 =

-9.97586726998 =

-$9.98, rounded to the nearest cent  

(i.e., the expected value of the bet is a loss of $9.98)

I NEED HELP PLS.......

Answers

-4x - 2.4

explanation: 1.3 - 3.7 = -2.4
then you leave the -4x by itself since it’s the only variable

3. Starting from the camp at C, Tim takes a bearing of a mountain and notes it to be 25°. He then walks 5 km to the hut at H and takes a second bearing, 345°

(a) Work out the angles in the triangle. Show it is a right angled triangle.

(b) From the mountain at M, what is the bearing of the camp?

(c) How far is it from the camp to the mountain?

(d) Tim walks back to camp from the hut. What bearing does he follow?

Answers

Answer:

No idea

Step-by-step explanation:

increase 600 by 8⅓ percent ​

Answers

Answer:

650

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

Leon and Thomas have the same number of cherries. Leon eats 5 of his cherries and has 12 cherries left. Thomas eats 9 of his cherries. How many cherries does Thomas have left?

Answers

8 because they both started with 17 and 17-9 is 8

What is the average distance covered in meters?

Answers

Answer:

4.17666666666666666667

Step-by-step explanation:

add 4.5 4.21 and 3.82 then divide it by 3

In a normal distribution the mean is 30.What will be the value of median of this distribution?​

Answers

Answer:

30

Step-by-step explanation:

because in normal distribution

mean=median=mode

A number n is increased by 40% and then decreased by 14%. What is the final result in terms of n?

Answers

Answer:

X = 100. A 40% increase causes it to increase to 140. A 40% reduction amounts to multiplying by 0.6, leading to a reduction of 40% of 140 ...

the general solution of sinx + cosx =√2 is..??​

Answers

The answer is A. x= [tex]\pi[/tex]/4 +2[tex]\pi[/tex]n

Answer:

the general solution has answer

2nπ+π/4

PLEASE HELP ITS MATH THANK YOUUUU

Answers

Answer: 10 meters

Explanation:

29 cm : blank meters

So how do we get from 348 cm to 29 cm?

To figure this out we divide.

348 divided by 28 = 12

we divided by 12 so we do the same with 120

120 divided by 12 = 10

So that’s the answer.

I hope this makes sense and helps you :)

Enter an inequality that represents the phrase "the sum of 4 and y is less than 6." Draw a graph that represents the inequality.
Please help AND give a good explanation. Like I am finding this super hard and well I can NOT get this question wrong unless I want a C on this. Help :(

Answers

9514 1404 393

Answer:

  4 + y < 6

  see attached for a graph

Step-by-step explanation:

The English description "the sum of A and B" is written symbolically as ...

  A + B

The symbol for "is less than" is <.

Then "the sum of 4 and y is less than 6" will be written ...

  4 + y < 6

__

The solution to this is found by subtracting 4 from both sides of the inequality:

  4 +y -4 < 6 -4

  y < 2 . . . . . . . . . simplified solution

The graph of this is a number line with an open circle at y=2, and shading to the left of that point, where values on the number line are less than 2.

Factor 28x3 + 156x2 + 80x

Answers

Answer:

4(+5)(7+4)

Step-by-step explanation:

i think this is real

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