Answer:
I hope this helps:)
Step-by-step explanation:
X^2 - 13 x = -36
add 36 to both sides
x^2 - 13x +36 = 0
figure out the factor
(x-4)(x-9) = 0
so (x-4) or (x-9) equals 0
so solution is
x-4=0 add 4 to both sides and get x = 4
x-9=0 add 9 to both sides and get x=9
x={ 4, 9}
Um un um i’m i’m in i’m i’m um um u me m um i’m in ...21
Answer:

Step-by-step explanation:
Given Data,
Q=23000 J
c=4.184 J/g °c
Δt= 68 °c
m=?
By using this equation,
Q=mcΔt

Answer:
right prism
Step-by-step explanation:
If the faces are rectangles, then this prism is called a "right prism"