Y ∝
√
x

If
y
=
45
when
x
=
81
find,
y
when
x
=
225

y = 75

Step-by-step explanation:

Given that:

   y

⇒ y = k

where k is the constant of proportionality.

When y = 45, x = 81, then;

45 = k

45 = 9 k

k =

  = 5

k = 5

So that,

y = 5

the value of y when x = 225 is;

y = 5

  = 5 x

  = 5 x 15

y = 75

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3

i wish i could you, i have no idea how to answer this

step-by-step explanation: