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Basile [38]
3 years ago
12

Solve −2x − 15 = 6x + 9.

Mathematics
1 answer:
Sindrei [870]3 years ago
6 0

Answer: x=-3

Step-by-step explanation:

Given the equation:

-2x - 15 = 6x + 9

You must solve for "x" to find its value.

You can follow these steps:

- Add 2x to both sides of the equation:

-2x - 15+2x= 6x + 9+2x

- 15 = 8x +9

- Subtract 9 from both sides of the equation:

- 15-9 = 8x +9-9

-24 = 8x

- Divide both sides of the equation by 8. Then you get:

\frac{-24}{8}=\frac{8x}{8}\\\\x=-3

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Find the equation for intercept x 4 and y -7​
nadezda [96]

Answer:

y = \frac{-7x}{4} - 14

Step-by-step explanation:

The equation used to find the equation for a line with two intercepts is called point slope form. y - y_{1} = m(x - x_{1}) , where y_{1} and x_{1} are the intercept points and m is the slope.

However, we need the slope to use this formula.

Use m = \frac{y_{1} - y_{2} }{x_{1} - x_{2}}

m = \frac{y_{1} - y_{2} }{x_{1} - x_{2}}

m = \frac{((0) - (7))}{((4) - (0))}

m = \frac{-7}{4}

y - y_{1} = m(x - x_{1})

y - ( -7 ) = m ( x - ( 4 ) )

y - ( -7 ) = -7/4 ( x - ( 4 ) )

y + 7 = -7/4 ( x + 4 )

y + 7 = \frac{-7(x+4)}{4}

y + 7 = \frac{-7x-28}{4}

y + 7 = \frac{-7x}{4} - 7

y + 7 = \frac{-7x}{4} - 7 - 7

y = \frac{-7x}{4} - 14

8 0
3 years ago
C is 8 more than half than n
cestrela7 [59]
1/2n+8=c one half of n plus 8 equals c
7 0
3 years ago
Y=2x
Shalnov [3]

Step-by-step explanation:

By substitution method

6x+3(2x)=12

6x+6x =12

12x=12

x=1

y=2x

y=2*1

y=2

7 0
2 years ago
Solve for x show all work
Marina86 [1]

Answer:

x = 6•3 == 18

18² = 324

324 + 2 + 11 = 337

<h2>337</h2>

Step-by-step explanation:

Order of Operations; PEMDAS

Parentheses

Exponents

Multiplication <u>& Division</u> <em>(Left to Right) (ex: 10x2÷5) You would do whatever comes left for Multiplication or Division.</em>

Addition <u>& Subtraction</u> <em>(Left to Right) (ex: 10-2+5) You would do whatever comes left for Addition & Subtraction.</em>

7 0
3 years ago
Read 2 more answers
H(t)=(t+3)
Anarel [89]

Answer:

0

Step-by-step explanation:

h(t) = (t + 3)² + 5, -5 ≤ t ≤ -1

The average rate of change is the change in h over the change in t.

(h(-1) − h(-5)) / (-1 − (-5))

= ((-1 + 3)² + 5 − ((-5 + 3)² + 5)) / (-1 + 5)

= (4 + 5 − 4 − 5)) / 4

= 0

3 0
3 years ago
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