i need help pleaseeeee!!!

Answer:

Step-by-step explanation:

It's should be c if it not then sry

Answer:

2x - (3 + 4x) = 12

x = -7.5

y = -27

Step-by-step explanation:

-4x + y = 3 (1)

2x - y = 12 (2)

From (1)

y = 3 + 4x

Substitute y = 3 + 4x into (2)

2x - y = 12 (2)

2x - (3 + 4x) = 12

2x - 3 - 4x = 12

2x - 4x = 12 + 3

-2x = 15

x = 15/-2

x = -7.5

Substitute x = -7.5 into (2)

2x - y = 12 (2)

2(-7.5) - y = 12

-15 - y = 12

-y = 12 + 15

- y = 27

y = -27

Answer:

144.78cm

Step-by-step explanation:

4ft 9in is 57 inches

so 57x2.54 is 144.78

Answer:

Mario is 12.446 cm

Step-by-step explanation:

Answer:

x=6

Step-by-step explanation:

Is this a real question because i dont think this exist unless u are some type of genius

Answer:

y-3x=2......1

y=-2x-8 ......2

substituting value of y in equation 1

-2x-8-3x=2

-5x=2+8

x=10/-5=-2

substituting value of x in equation 1

y-3×(-2)=2

y+6=2

y=2-6=-4

x=-2

y=-4

(

Answer:

(-2, -4) or x = -2     y = -4

Step-by-step explanation:

Solve with subsitution

y-3x=2

y=-2x-8

1. Substitute -2x - 8 in for the y in y - 3x = 2                          (-2x - 8) - 3x = 2

2. Solve for x.  Combine like terms.                                               -5x - 8 = 2

3. Solve the one step equation.                                                            +8  +8

                                                                                                              -5x = 10

                                                                                                               -5     -5

                                                                                                                x = -2

4. Substitute the -2 in for x in either equation.                                y = -2x - 8

                                                                                                           y = -2(-2) - 8

                                                                                                           y = 4 - 8

                                                                                                           y = -4

Answer:

1/2x+6

Step-by-step explanation:

I'm assuming you want to simplify .

1/5 divided by 1/5 equals 1

(2/3x+2-1/6x+4) x 1 - Multiply by one and it stays the same

2/3x+2-1/6x+4 - Calc. Difference between 2/3x and -1/6x and add 2+4

1/2x+2+4

1/2x+6

Answer:

Step-by-step explanation:

Try the points of x and y by substitution

This gives us the function:

Answer:

the actually answer is -8

Step-by-step explanation:

Answer:

1/8

Step-by-step explanation:

Llyod used 1/4 chocolates to make 2/3 gallons of chocolate pudding

= 1/4 ÷ 2/3

= 1/4 × 3/2

= 3/8

Therefore the number of pounds needed to make 1/3 of the recipe can be calculated as follows.

= 3/8 × 1/3

= 3/24

= 1/8

Answer:

41.81

Step-by-step explanation:

sinus-1 formula

opp/hyp

4/6

=========================================

Explanation:

You move the decimal point two spots to the left to go from 2.85% to 0.0285

Or you can think of it like this:

2.85% = (2.85)/100 = 0.0285

since "percent" means "per 100"

Answer:

you have all of them right just make sure for number six you have 1/3125. you have all the work im not sure what i should solve.

Answer:

A≈660.52cm²

Step-by-step explanation:

i used the formulassss A=πr2

d=2r

Answer:

x = 1, x = 19

Step-by-step explanation:

Given

2x² - 20x = x² - 19 ( subtract x² - 19 from both sides )

x² - 20x + 19 = 0 ← in standard form

(x - 1)(x - 19) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

x - 19 = 0 ⇒ x = 19

Answer:

The event is unlikely.

Step-by-step explanation:

Probabilities under 50% (0.50) are considered unlikely.

Answer:

it 15,000

Step-by-step explanation:

I hope it work

Answer:

5.83 blocks away from his home

Step-by-step explanation:

If he travels 5 blocks south and 3 blocks west, the distance from his house considered along with the distances travelled gives a right angled triangle whose opposite side and adjacent sides are the distances travelled north and west.

The distance from his house after moving 3 blocks west is the hypotenuse side. As such, the distance may be computed using Pythagoras' theorem. Let the distance from his house be G

G^2 = 5^2 + 3^2

G^2 = 25 + 9

= 34

G = √34

=5.83

John is 5.83 blocks away from his home

Answer:

[tex]\boxed {\boxed {\sf \$54.80}}[/tex]

Step-by-step explanation:

Chris earns the commission on the jewelery sales. To calculate what he earned, multiply the commission rate and his sales.

[tex]commission= commission \ rate * sales[/tex]

His rate is 4% and his sales are $1,370

[tex]commission= 4\% * \$1370[/tex]

Convert the percent to a decimal. Divide by 100 or move the decimal two spots to the left.

[tex]commission= 0.04* $1370[/tex]

[tex]commission = \$ 54.8[/tex]

Chris's commission is $54.80

Answer:

24

Step-by-step explanation:

x + 16

8 + 16

= 24

You just plug in 8 in the x place. Hope this helps, thank you !!

Answer:

290 inches

Step-by-step explanation:

Answer:

the answer for this question is 7-2x

Answer:

if you see this say hi pls

Step-by-step explanation:

Answer:

y > 2

Step-by-step explanation:

Given

14y - 14 > 14 ( add 14 to both sides )

14y > 28 ( divide both sides by 14 )

y > 2

the answer is p=6

hope that helped loll

Answer: 6

Step-by-step explanation:

In a triangle, all three angles always add to 180°.

Thus, simply do 180 - 96 - 54 to get the angle, 30.  Then, because the angle is 5p, divide 30/5 = 6.

Hope it helps <3 :D

Answer:

Answer: Yes, it does. It must bounce of a low of 4.08 feet and a high of 4.5 feet

Step-by-step explanation:

I don't know how to write it in index form but I can Rationalize the Denominator.

Rationalize the Denominator:        [tex]\frac{\sqrt{x} }{3}[/tex]

Answer:

2.5 Miles

Step-by-step explanation:

4 k = ? Mile

1.6 k = 1 mi

4/1.6 is 2.5

1x2.5 equals 2.5

so 4 km should be 2.5 mi

4 k = 2.5 Mile

(x2.5)1.6 k = (x2.5)1 mi