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3 years ago

6+3x=7-x. pls solve and i will mark you brainliest

Mathematics

2 answers:

ycow [4]3 years ago

4 0

⇛6 + 3x = 7 - x

⇛3x + x = 7 - 6

⇛4x = 1

⇛x = 1/4

vampirchik [111]3 years ago

4 0

Answer:

x=0.25 or 1/4

Step-by-step explanation:

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Quick! Andrew has to play 15 games in a chess tournament. At some point during the tournament he has won half of the games he ha

nikklg [1K]

$x$ - the number of the games he played

$\dfrac{x}{2}$ - the number of the games he won

$\dfrac{x}{3}$ - the number of the games he lost

$x=\dfrac{x}{2}+\dfrac{x}{3}+2\Big|\cdot6\\6x=3x+2x+12\\x=12$

$15-12=3$

so, he has still 3 games to play

3 0

3 years ago

Match the information on the left with the appropriate equation on the right.

solmaris [256]

Answer:

Step-by-step explanation:

1). Equation of a line which has slope 'm' and y-intercept as 'b' is,

y = mx + b

If slope 'm' = 1 and y-intercept 'b' = -3

Equation of the line will be,

y = x - 3

x - y = 3

2). Equation of a line having slope 'm' and passing through a point (x', y') is,

y - y' = m(x - x')

If the slope 'm' = 1 and point is (-1, 2),

The the equation of the line will be,

y - 2 = 1(x + 1)

y = x + 1 + 2

y = x + 3

x - y = -3

3). Equation of a line passing through two points $(x_1, y_1)$ and $(x_2,y_2)$ will be,

$y-y_1=\frac{(y_2-y_1)}{(x_2-x_1)}(x-x_1)$

If this line passes through (-2, 3) and (-3, 4),

$y-3=\frac{(4-3)}{(-3+2)}(x+2)$

y - 3 = -1(x + 2)

y = -x - 2 + 3

y = -x + 1

x + y = 1

4 0

3 years ago

Hi there! Three days ago I ordered 8 Neat cupcakes. This week I'd like 50% fewer than that.

Furkat [3]

Total cup cake ordered = 8

Percentage 'P' of a quantity x can be calculated using:

p/100 * x

Here,

P = 50%

x = 8

Put these values in formula.

50/100 * 8

=> 1/2 * 8

=> 4

So, the 50% fewer cupcakes would be (8 - 4) = 4 cupcakes.

4 0

1 year ago

5x+15+10x+7 5(x+3)+2x+7

Marta_Voda [28]

Step-by-step explanation:

1. Combine Like Terms (Add):

$5x+15+10x+7$

$15x+22$

2. Use Distributive Property:

$5(x+3)+2x+7$

$5x+15+2x+7$

Combine Like Terms:

$7x+22$

5 0

2 years ago

Plz help me find answer. what are the coordinates of slope when y= x/1–x² when dy/dx=1

vova2212 [387]

Step-by-step explanation:

dy/dx

= d/dx [x / (1 - x²)]

= [(1 - x²)(1) - (x)(-2x)] / (1 - x²)²

= (1 + x²) / (1 - x²)².

When dy/dx = 1, (1 + x²) / (1 - x²)² = 1.

=> 1 + x² = 1 - x²

=> 2x² = 0, x = 0.

Also when x = 0, y = (0) / [1 - (0)²] = 0.

Hence the coodinates is (0, 0).

8 0

3 years ago