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3 years ago

Find the value of 2x -1 when x+6=-2

Mathematics

2 answers:

IceJOKER [234]3 years ago

8 0

Answer:

-17

Step-by-step explanation:

x + 6 = -2, subtract the 6 from -2

x = -2 - 6

x = -8

2x - 1 = ? plug in -8

2(-8) - 1 = ?

-16 - 1 = -17

so, 2(-8) - 1 = -17

Anna [14]3 years ago

3 0

Answer:

-17

Step-by-step explanation:

Let's first simplify x+6= -2.

x=-6-2

x= -8

Plug in x= -8.

2(-8)= -16

-16-1= -17

Hoped this helped.

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What are the approximate solutions of 7x^2 4x-9=0??

BlackZzzverrR [31]

No solution 7x square and -3 cant equal you a positive or a negative answer

8 0

3 years ago

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Andre45 [30]

Answer:

$a. \: 28$

$b. \: 5$

Step-by-step explanation:

$a. \: 88 \div 3 \frac{1}{7}$

$88 \div \frac{22}{7}$

Multiply the numerator by the reciprocal of the denominator.

$88 \div \frac{7}{22}$

$4 \times 7$

$28$

$b. \: 49 \frac{2}{9} \div 9 \frac{4}{9}$

$\frac{425}{9} \div \frac{85}{9}$

Multiply the numerator by the reciprocal of the denominator.

$\frac{425}{9} \times \frac{9}{85}$

$5$

<h3>Hope it is helpful...</h3>

5 0

3 years ago

3x-6<12 step by step equation

Mandarinka [93]

Answer:

x < 6

Step-by-step explanation:

Given

3x - 6 < 12 ( add 6 to both sides )

3x < 18 ( divide both sides by 3 )

x < 6

8 0

3 years ago

Simplify the expression x^2+x-2/8x^2+4x/3x^2+10x+8

irina [24]

Answer:

Step-by-step explanation:

x² + x - 2 = x² - x +2x -2 = x(x - 1) + 2*(x-1) = (x-1)(x+2)

8x² + 4x = 4x ( 2x + 1)

3x² + 10x + 8 = 3x² + 6x + 4x + 4*2 =3x * (x + 2) + 4 * ( x + 2) = (x + 2)(3x + 4)

6 0

3 years ago

Heyy Answer please and explain

ludmilkaskok [199]

Answer: V=37.5 cm³

Step-by-step explanation:

Formula

V=(πr²h)/3

Given

r=5/2=2.5 cm

h=6 cm

Solve

V=(πr²h)/3

V=(π(2.5)²(6))/3

V=(π(6.25)(6))/3

V=37.5π/3

V=37.5(3)/3

V=37.5 cm³

Hope this helps!! :)

Please let me know if you have any questions

5 0

3 years ago