Question 3
State the value of the discriminant of 5x2 + 9x = 3.
a) 21
b) 12
c) 141
d) 5

D = 141

Step-by-step explanation:

The given quadratic equation is

.

It is required to find the value of the discriminant. The value of discriminant  of any quadratic equation is given by :

Here, a = 5, b = 9 and c = -3

On plugging all the values, we get :

So, the value of discriminant for y is 141.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads