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umka21 [38]
3 years ago
10

Simplify. 13 – 81 – (12 : 3 + 1)2

Mathematics
1 answer:
kumpel [21]3 years ago
6 0

Answer:-78

Step-by-step explanation:

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A model rocket is launched from the top of a building. The height(in meters) of the rocket above the ground is given by h(t)=-6t
Shalnov [3]

Answer:

Step-by-step explanation:

I don't know if you are a calculus student, but since calculus is the easiest way to solve this, that's what I used.  The position equation is

s(t)=-6t^2+24t+14

and the velocity function, the first derivative, is

v(t)=-12t+24

From Physics, you should know that the velocity of an object is 0 at its highest point.  That means that if we sub in a 0 for the velocity and solve for t, we find the time at which the object is at its highest point.  That is:

0=-12t+24 and

0=-12(t-2)

By the Zero Product Property,

-12 definitely does not equal 0, so that means that

t - 2 = 0 and

t = 2 seconds.

So at 2 seconds, the object is at its highest point.  Go back to the position function now and sub in a 2 for t to find the height of the object at 2 seconds.

s(2)=-6(2)^2+24(2)+14 so

s(2) = 38 meters

7 0
3 years ago
5 - 3 = 15 or 7 +5 = 20 true or false
Dominik [7]

Answer:

False

Step-by-step explanation:

4 0
4 years ago
5. Write down the nth term of each of the following G.Ps
yawa3891 [41]

Answer:

1i) nth term = 12(-b/4)^(n-1)

ii) nth term = 3(-1/9)^(n-1)

2i) Sixth term= (-3b^5)/256

ii) Eight term = -1/1594323

Question:

The complete question as found on brainly (question-10746111):

Write down the nth term of each of the following G.Ps whose first two terms are given as follows. Also find the term stated besides each G.P.

i) 12,-3b,......sixth term

ii) 3,-1/3,..........;8th term?

Step-by-step explanation:

1) To solve terms involving Geometric progressions (GPs), we would first state the variables that are to be incorporated in the formula.

i) 12,-3b,......;sixth term

1st term = a= 12

r = common ratio = 2nd term /1st term

r = -3b/12 = -b/4

Then we would find the nth term

See attachment for details

ii) 3,-1/3,..........;8th term

1st term = a= 3

r = common ratio = 2nd term /1st term

r = (-⅓)/3 = (-⅓)(⅓) = -1/9

Then we would find the nth term

See attachment for details

2) we are to determine the sixth term in (i) and eight term in (ii)

See attachment for details

Sixth term= (-3b^5)/256

Eight term = -1/1594323

7 0
3 years ago
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