Answer:6hrs and &270
8hours and &360
9.5hours and&427.50
Step-by-step explanation:
Answer:
y=5
Step-by-step explanation:
Use the process of deletion. It means to add all the like variables. 11x+(-11x) is just 0 so it cancels out. -6y+5y is -y. -19+14 is -5. This leads to -y=-5. The variable can NEVER be negative. To get rid of the negative, just divide by -1 on both sides.
X = 2a - b²
x - 2a = b²
√x-2a = b
Just to clarify, all of x-2a is under the square root.
Let the first number be A. and the second number B.
A + B=12-------equation1 and
A ×B =-64------eqn2
from eqn1,
A =12 - B
so put A=12-B into eqn 2
(12-B) ×B=-64
.12B-B^2=-64
B^2-12B-64=0
now use calculator to find the answer.
u will get two answers, but u haven't finished yet. if B is = X,
put Xinto A=12-B
to find the value of A.
and so the same for the second number.
Answer:
V=2(1+2)a2h
Step-by-step explanation:
