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ZanzabumX [31]
3 years ago
15

3x+1=8x-24 helpppppppp

Mathematics
2 answers:
Grace [21]3 years ago
5 0

Hello there again! :) :D

Answer:

\boxed{X=5}

<u><em>*The answer must have A POSITIVE SIGN ONLY!*</em></u>

Step-by-step explanation:

First, you subtract by 1 from both sides of an equation.

3x+1-1=8x-24-1

Add/Subtract by the numbers from left/right.

24+1=25

3x=8x-25

Then, you subtract by 8x from both sides of an equation.

3x-8x=8x-25-8x

Simplify equation.

-5x=-25

Divide by -5 from both sides of an equation.

\frac{-5x}{-5}=\frac{-25}{-5}

Divide by the numbers from left/right.

-25/-5=5

Final answer is → \boxed{X=5}

<em>Hope this helps you!</em>

<em>Have a nice day! :)</em>

<em>:D</em>

<em>-Charlie</em>

<em>Thank you! :)</em>

Irina18 [472]3 years ago
4 0

3x+1 =8x -24

3x -8x +1 = -24

-5x +1 = -24

-5x = -24 -1

-5x = -25

x = -25/-5 = 5

x = 5

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7x+9

5x+2x= 7x

5+4=9

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8 0
3 years ago
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2 years ago
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Derive the equation of the parabola with a focus at (-5,5) and a directix of y = -1
Paladinen [302]

Answer:

D

Step-by-step explanation:

From any point (x, y) on the parabola the focus and directrix are equidistant

Using the distance formula

\sqrt{(x+5)^2+(y-5)^2} = | y + 1 |

Squaring both sides

(x + 5)² + (y - 5)² = (y + 1)^2 , that is

(y + 1)² = (x + 5)² + (y - 5)² ← subtract (y - 5)² from both sides

(y + 1)² - (y - 5)² = (x + 5)² ← expand left side and simplify

y² + 2y + 1 - y² + 10y - 25 = (x + 5)²

12y - 24 = (x + 5)² ← factor left side

12(y - 2) = (x + 5)² ← divide both sides by 12

y - 2 = \frac{1}{12} (x + 5)² ← add 2 to both sides

y = \frac{1}{12} (x + 5)² + 2

or

f(x) = \frac{1}{12} (x + 5)² + 2 → D

7 0
3 years ago
SIR MELIODAS <br><br><br> CAPTION <br><br><br> MEL|ODAS
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Answer:

great

Step-by-step explanation:

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3 years ago
Jack has twice as many dimes as quarters. If the total value of the coins is $6.30, how many dimes does he have?
ycow [4]

Answer:

Number of dimes = 28

Step-by-step explanation:

Given that:

Worth of coins = $6.30 = 6.30 * 100 = 630 cents

Let,

x be the number of dimes

y be the number of quarters

According to given statement;

x = 2y    Eqn 1

10x+25y = 630    Eqn 2

Putting x = 2y in Eqn 2

10(2y) + 25y = 630

20y + 25y = 630

45y = 630

Dividing both sides by 45

\frac{45y}{45}=\frac{630}{45}\\y=14

Putting y=14 in Eqn 1

x = 2(14)

x = 28

Hence,

Number of dimes = 28

4 0
3 years ago
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