5s-25t+3
hope this helps I used a site called mathway and it actually works I use it to answer all of my math problems
A.
the radicand is b²-4ac
if it is in form ax²+bx+c
when it is
greater than 0, then 2 real roots
equal to 0, then 1 real root
less than 0, then no real roots
so
a=4
b=-12
c=10
b²-4ac=(-12)²-4(4)(10)=144-160<0
so 0 real roots
B.
using quadratic formula because it is easier
for
ax²+bx+c=0
so
for 2x²-13x+21
a=2
b=-13
c=21
x=(13+1)/4 or (13-1)/4
x=14/4 or 12/4
x=7/2 or 3
Y=5x+6 will pass through (1,11) and it is parallel to y=5x-7
5x can be interpreted as 5/1, which is the rise over run ( rise / run )
for every X value the line will go up by five
Y=Mx+B
If we start at 11 and go down by five we get 6, this means if we have a B value of 6, with a rise/run of 5/1. at the first X value (1, Y), the Y value will be 11. (1,11)
I'm bad at explaining so ask away and ill further elaborate.
Answer:
Step-by-step explanation:
Rhombus is a two dimensional shape. So it doesn't have volume.
Area of rhombus = (pq)/2
Here p & q are the diagonals