Answer:
Answer Choice C
Step-by-step explanation:
Because it is dilated by a factor of 3
I think it Would it be 260?
Part A:
3x^2-15x+20=0
ax^2+bx+c=0; a=3, b=-15, c=20
Radicand: R=b^2-4ac
R=(-15)^2-4(3)(20)
R=225-240
R=-15<0, then the equation has two imaginary solutions (no real)
Part B:
3x^2+5x-8=0
a=3, b=5, c=-8
R=(5)^2-4(3)(-8)
R=25+96
R=121>0, then the equation has two different real solutions:
x=[-b+-sqrt(R)] / (2a)
x=[-5+-sqrt(121)] / [2(3)]
x=(-5+-11) / 6
x1=(-5-11)/6=(-16)/6→x1=-8/3
x2=(-5+11)/6=6/6→x2=1
Solutions: x=-8/3 and x=1
I shose this method because I can get the solutions directly, and I don't have to guess the possible solutions
Answer:
Step-by-step explanation:
step 1
Find the lateral area
we know that
The lateral surface of a square pyramid is equal to the area of its four lateral triangular faces
so
![LA=4[\frac{1}{2}bh]](https://tex.z-dn.net/?f=LA%3D4%5B%5Cfrac%7B1%7D%7B2%7Dbh%5D)
where
----> slant height
substitute the values
![LA=4[\frac{1}{2}(25)(18)]=900\ m^{2}](https://tex.z-dn.net/?f=LA%3D4%5B%5Cfrac%7B1%7D%7B2%7D%2825%29%2818%29%5D%3D900%5C%20m%5E%7B2%7D)
step 2
Find the cost
What will? Whatever it is, I will help you. If you are talking about Brainly then yeah.
