Answer:
16x+12
Step-by-step explanation:
4 sides
2*(5x-2 )
10x-4
2(3x+8)
6x+16
10x-4+6x+16=16x+12
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Answer:
t1= 1.1475 sec
t2=9.48 sec
Step-by-step explanation:
This question asking for the time when an object reach a specific height. I will explain what the formula stand for to make this easier.
h= height = 174feet
v0= initial velocity = 170 feet/s
t= time
h0= initial height= ground level = 0
The question have predetermined formula for the height, so we should use it instead of formula that involve gravity value.
h= -16 +v0t + h0t
174 feet = -16 + 170 feet/s x t + 0 x t
-16 + 170 feet/s x t - 174 feet = 0
8 - 85 feet/s x t + 87 feet = 0
This equation will be hard to solve since its value in fraction, so lets use the quadratic formula
t1=
t1= 1.1475
t2=
t2=9.48
Answer: The answer is 1320 hope this is right.
Step-by-step explanation:
Answer:
14.5, 13, 11.5
Step-by-step explanation:
the general term (an) of an arithmetic sequence with first term a1 and common difference d is
an = a1 + d(n-1)
then the 8th term is
a8 = a1 + d(8-1)
and the 12th term is
a12 = a1 + d(12-1)
so, the difference between these terms is
a12 -a8 = (a1 +11d) -(a1 +7d) = 4d
= (-2-4) = -6 . . . substituting values for a12 and a8
then the common difference is
d = -6/4 = -3/2
using this, we can find a1 from a8.
4 = a1 +7·(-3/2) = a1 - 10.5
14.5 = a1 . . . . add 10.5 to both sides of the equation
this is the first term. the second is this value with the common difference added:
14.5 + (-1.5) = 13
the third term is this with the common difference added:
13 + (-1.5) = 11.5
in summary, the first three terms are
14.5, 13, 11.5