Answer:
One
Step-by-step explanation:
Set each equations equal to each other
Find the discrimant.
This means there is one real solution. Since the discramnt equal 0.
Answer:
105 cm²
Step-by-step explanation:
We can see that the area at the square at the bottom, since one side is 5, is 5²=25. Then, we know that the height of the triangles is 8, the base is 5, and there are 4 of them, so ((5*8)/2)*4=80. Add these up to get 105 as our total
Answer:
Step-by-step explanation:
What you have to do is set it up like this
what you have to do is
(30*52) ÷ 100=x
1664 ÷ 100= 16.64
52-16.64= 35.36
35.36 is the new sale price
Answer:
y = 2x
Step-by-step explanation:
y=mx+b
m=2
x=2
y=4
4=2*2 + b
b = 4 - 4
b = 0
y = 2x
R^2+2r-33=0 move constant to other side by adding 33 to both sides
r^2+2r=33 halve the linear coefficient, square it and add to both sides, in this case it is just one
r^2+2r+1=34 now the left side is a perfect square...
(r+1)^2=34 take the square root of both sides...
r+1=34^(1/2) subtract 1 from both sides
r=-1+34^(1/2) and -1-34^(1/2)
