The price of a bracelet was decreased by 30% to £63. What was the price before the decrease?
1 answer:
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Factor
find wht 2 numbers add to 8 and multiply to 3
none do
use quadratic formula which can be used when
ax^2+bx+c=0
x=
a=1
b=8
c=3
x=
x=
x=
x=
x=
x=
or x=
aprox x=-7.60555 or x=-0.394449
find wht 2 numbers add to 8 and multiply to 3
none do
use quadratic formula which can be used when
ax^2+bx+c=0
x=
a=1
b=8
c=3
x=
x=
x=
x=
x=
x=
aprox x=-7.60555 or x=-0.394449
Answer:
Step-by-step explanation:
Question 1
The point-slope formula for a straight line is
y – y₁ = m(x – x₁)
x₁ = 3; y₁ = -5; m = -4
Substitute the values
The diagram shows the graph of equation 1 (red) with slope -4 passing through (3,-5).
Question 2
x₁ = -1; y₁ = 8; m = 1
Substitute the values
The diagram shows the graph of equation 2 (green) with slope 1 passing through (-1,8).
