Answer:
Step-by-step explanation:
The rock will hit the surface when its height equals zero.
t^2-8t-10=0
t^2-8t=10
t^2-8t+16=10+16
(t-4)^2=26
t-4=+(26^(1/2))
t=4+(26^(1/2))
t=9.1s
hi there,
Let's solve your equation step-by-step.
2(x−7)−3(x−4)=1
Step 1: Simplify both sides of the equation.
2(x−7)−3(x−4)=1
(2)(x)+(2)(−7)+(−3)(x)+(−3)(−4)=1(Distribute)
2x+−14+−3x+12=1
(2x+−3x)+(−14+12)=1(Combine Like Terms)
−x+−2=1
−x−2=1
Step 2: Add 2 to both sides.
−x−2+2=1+2
−x=3
Step 3: Divide both sides by -1.
−x
−1
=
3
−1
x=−3
Answer:
x=−3
Answer:
Hello I Just had this problem. The answer IS A
Step-by-step explanation:
Answer:1) 2n - 1
2) 99
see in the picture, u can see that the number of shaded in figures 1 through n will form an evenly spaced sequence with:
u(1) = 1
u(2) = 3
u(3) = 5
u(4) = 7
u(5) = 9
......
=> The above sequence has: u1 = 1
d = 2
=> u(n) = 1 + 2(n - 1) = 2n - 1
=> the number of shaded squares in the n figure is 2n - 1
b) the number of shaded squares in the 50th figure is 2.50 - 1 = 99
Step-by-step explanation:
Answer:
Step-by-step explanation:
-10 since +5-15 =-10 so 2