Answer:
3*(5*x-7)-(15*x-21)=0
Step-by-step explanation:
3 • (5x - 7) - (15x - 21) = 0
Step 2 :
Equation at the end of step 2 :
0 = 0
Step 3 :
Equations which are always true :
Answer:
680.. that is if we are only doing 4 weeks = a month but yeah :)
Step-by-step explanation:
Answer:
a)y=3/2x+6 b) y= -4/3x-2
Step-by-step explanation:
a)using the points given (-2,2) and (0,6)
we use rise over run formula and get 3/2
and we get y intercept by looking at when the line touches the y line in this case 6
using y=mx+b formula when m is slope and b is y interecpt we plug the numbers in
so we get y=3/2x+6
b) For this we use the points given which are (-3,2) and (0,2)
we use the rise over run formula and get 4/3 but since the line is going down it means the slope is negative so we get -4/3
and the y intercept we get by looking at when it touches the y line in this case it touches at -2
so using the same formula as the first question
but since the y interecpt is negative we change the plus sign for a minus
we get y=-4/3x-2
Answer:
105 = (w+8) *w
w = 7 cm
l = 15 cm
Step-by-step explanation:
Area of a rectangle is
A = l*w
l = w+8
105 = (w+8) *w
Distribute
105 = w^2 +8w
Subtract 105 from each side
105-105 = w^2 +8w -105
0 =w^2 +8w -105
Factor
What 2 number multiply to 105 and add to 8
15*-7 = -105
15-7 = 8
(w+15) (w-7) =0
Using the zero product property
w+15 =0 w-7 =0
w=-15 w=7
impossible
not negative
w =7
l = 15
Answer:
impolite
Step-by-step explanation:
