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Vitek1552 [10]
4 years ago
9

Type the expression that results from the following series of steps: Start with t, add 6, multiply by 2, then subtract 5.

Mathematics
1 answer:
Lynna [10]4 years ago
5 0

Answer:

2(t+6)-5

Step-by-step explanation:

<u><em>The unknown number is t</em></u>

=> Adding 6 will make it t+6

=> Multiplying 2 will make it 2(t+6)

=> Subtracting 5 will make it 2(t+6)-5

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5 0
4 years ago
F(n) = 2• (-3)^n
Mashutka [201]

Answer:

f(1)=-6

f(n)=f(n-1)(-3)

Step-by-step explanation:

We are given that

f(n)=2\cdot (-3)^n

We have to complete  the recursive formula of f(n).

Substitute n=1

f(1)=2\cdot (-3)

f(1)=-6

f(2)=2\cdot (-3)^2=18

f(3)=2\cdot (-3)^3=-54

\frac{f(2)}{f(1)}=\frac{18}{-6}=-3

\frac{f(3)}{f(2)}=\frac{-54}{18}=-3

It forms geometric sequence because the ratio of two consecutive terms are equal.

Therefore, the recursive formula

f(n)=f(n-1)r

f(n)=f(n-1)(-3)

7 0
3 years ago
Read 2 more answers
Cos2a=1-2sin^2a for all values of a.
pickupchik [31]
cos2a= cos^{2} a- sin^{2} a \\ but  \  cos^{2} a + sin^{2} a=1  \\ i.e. \  cos^{2} a=1- sin^{2} a
Therefore,
cos2a=1- sin^{2} a- sin^{2} a \\ =1-2 sin^{2} a
6 0
3 years ago
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What is 4.86 divided by 0.2
babymother [125]
- - Lets solve:

\frac{4.86}{0.2}

\frac{4.86}{ \frac{2}{10} }

4.86* \frac{10}{2}

- - Solve for that to get answer:

24.3

Your final answer is 24.3


7 0
4 years ago
Read 2 more answers
I'm not good at math
Sati [7]
For #2 from what I can see it is x<span> ÷ 3= 3 which x would equal 1
For #3 it is 4x=-32 which x would be -8
If I saw it wrong please let me know</span>
6 0
4 years ago
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