how can you tell if a linear equation is proportional?

Answer:

4.5

Step-by-step explanation:

22.5 divided by 5 = 4.5

Answer:

4.5

Step-by-step explanation:

22.5÷5 we can do the bus stop method or we can use a calculator

Answer:

x= 48

exterior angle theorem

-12+48 = 36

48x3= 144

36+134= 180

Answer:

x = 4 and y = -2

Step-by-step explanation:

Let 6x - 2y = 28 be equation (i)

and 4x + 2y = 12 be equation (ii)

To solve the following equations, first add the equations:

6x - 2y + 4x + 2y = 28 + 12

6x + 4x + 2y - 2y = 28 + 12

10 x = 40

x = 4

Substituting in (ii)

4x + 2y = 12

4*4 + 2y = 12

2y = 12 - 16

2y = -4

y = -2

Answer:

35dg & 36abcd

Step-by-step explanation:

Multiply 7 times 5 then add the remaining terms for equation 1. For equation 2 multiply 12 by 3 for 36.

Answer:

angle 9

Step-by-step explanation:

Answer: 675ft

Step-by-step explanation: 614 + 61 (since it’s below sea level) =675ft

Answer:

x = 13.6 in

Step-by-step explanation:

The arc x is calculated as

x = circumference of circle × fraction of circle

   = 2πr × [tex]\frac{0.8}{2\pi }[/tex] ( cancel the 2π on numerator/ denominator )

   = 17 × 0.8

   = 13.6 in

Answer:

I think tge answer would be 24 I am not for sure

Answer:

Step-by-step explanation:

V = π times r^2 times h (height)

452.16 = 3.14 times r^2 times 4

Multiply 3.14 times 4

452.16 = 12.56 times r^2

Divide 452.16 by 12.56.

452.16 / 12.56 = 36

36 = r^2

The square root of 36 is 6.

So the radius of the cylinder is 6 yards^3.

Answer:

c. -13 + 2g is the correct option.

Answer:

A

Step-by-step explanation:

We have -4x > -10, so 4x < 10

Answer:

A. x < 2.5

Step-by-step explanation:

you subtract 5 on both sides

then you get -4x > -10.

then you divide -4 on both sides

and you get x<2.5

Answer:

4.625 lbs or 4 5/8

Step-by-step explanation

12 3/16- 7 7/8=

Answer:

the answer is 4 and 5/16

Step-by-step explanation:

x bars <4> and y bars come in <3>

Answer:

5(4x + 3y) = 20x + 15y

Step-by-step explanation:

The matter of months in which in this case is 5 months is the coefficient.

The amount of boxes per month is important information. We don't know how many bars are in each box. EACH is a key word for multiplying. If we want to know quickly how many bars are in 4 boxes (or 3) of the granola bars. We can simply multiply the amount of bars for each box with the amount of boxes. Since we don't know the amount  of bars there are in each box we are going to use a variable. so it would look like this- 4x + 3y BUT we need to add the coefficient. Now rewrite the expression. 5(4x + 3y)

We can use the distributive property to generate an equal expression.

Answer:4

Step-by-step explanation:

1/2 is 4/8 and 4/1 is 4

Answer:

i think it's 15 gallons

Answer:

f(1) = -4

Step-by-step explanation:

Given that,

f(x) = 2x-6

We need to find the value of f(1).

Put x = 1 in the above expression.

f(1) = 2(1)-6

= 2-6

= -4

So, the value of f(1) is equal to -4.

Answer:

e = 129

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

e is an exterior angle of the triangle , then

e = 60 + 69 = 129

Answer:

the second one!

Step-by-step explanation:

Answer:

1) Option 3

2) Option 3

3) Option 3

4) Option 1

5) Option 2

6) Option 3

7) Option 1

Step-by-step explanation:

1) [tex]y = x^2 + 4x + 3[/tex]

Lets split the middle term.

[tex]=> y = x^2 + 3x + x + 3[/tex]

[tex]=> y = x(x+3) + 1(x + 3)[/tex]

[tex]=> y = (x+1)(x+3)[/tex]

∴ [tex]x = -3 , -1[/tex]

2) [tex]y = 8x^2 - 22x + 5[/tex]

Lets split the middle term.

[tex]=> y = 8x^2 - 20x - 2x + 5[/tex]

[tex]=> y = 4x(2x - 5) - 1(2x - 5)[/tex]

[tex]=> y = (2x - 5)(4x - 1)[/tex]

∴ [tex]x =\frac{1}{4} , \frac{5}{2}[/tex]

3) [tex]y = x^2 - 5x[/tex]

[tex]=> y = x(x - 5)[/tex]

∴ [tex]x = 0 , 5[/tex]

4) [tex]y = 12x^2 + 18x[/tex]

[tex]=> y = 6x(2x + 3)[/tex]

∴ [tex]x = \frac{-3}{2} , 0[/tex]

5) [tex]y = x^2 - 7x + 12[/tex]

Lets split the middle term.

[tex]=> y = x^2 -3x - 4x + 12[/tex]

[tex]=> y = x(x - 3) - 4(x - 3)[/tex]

[tex]=> y = (x - 3)(x - 4)[/tex]

∴ [tex]x = 3,4[/tex]

6) [tex]y = 3x^2 + 10x + 8[/tex]

Lets split the middle term.

[tex]=> y = 3x^2 + 6x + 4x + 8[/tex]

[tex]=> y = 3x(x + 2) + 4(x + 2)[/tex]

[tex]=> y = (x + 2)(3x + 4)[/tex]

∴ [tex]x = -2 , \frac{-4}{3}[/tex]

7) [tex]y = x^2 - 4x - 45[/tex]

Lets split the middle term.

[tex]=> y = x^2 - 9x + 5x - 45[/tex]

[tex]=> y = x(x - 9) + 5(x - 9)[/tex]

[tex]=> y = (x - 9)(x + 5)[/tex]

∴ [tex]x = -5 , 9[/tex]

Answer:

oops

Step-by-step explanation:

Answer:

ok so i dont know exactly what the answer is but this khan academy video will help just search.

describe the vertical shifted of y x 2 9 units

Answer:

y = 1/2 x + 5

Step-by-step explanation:

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

(y-6)/(x-2) = 1/2

y - 6 = 1/2 x - 1

y = 1/2 x + 5

Answer:

Step-by-step explanation:

The rate of change, m, is defined as

m=(y2-y1)/(x2-x1), in this case we have points (-15,-3) and (-7,-1) so

m=(-1+3)/(-7+15)

m=2/8

m=1/4

Answer:

45-20 = 25

Step-by-step explanation:

Answer:

c) x=1.23

Step-by-step explanation:

a =3

b=2

c=-7

use quadratic equation where

[tex] { ax}^{2} + bx + c = 0 = \frac{ - b \: + or \: - \sqrt{ {b} ^{2} - 4ac} }{2a} [/tex]

-2+/- square root of (2^2- (4×3×-7) ) all that over 2x3

square root of (2^2-(4×3×-7) )

= 9.38083152

2×3=6

-2+or - 9.38 all that divided by 6

-2+9.38= 7.38÷6

x=1.23

or

-2-9.38 all divided by 6

-2-9.38= -11.38 ÷6

x= -1.9

all in all x can't be negative meaning x=1.23

Answer:

Step-by-step explanation:

I like answer 3.... the series will add to 1/3 eventually

Answer:

Contents of this laser is 0.744 um and the mass of the earth