All categories

2 years ago

Evaluate the summation of 2 n plus 5, from n equals 1 to 12. 29 36 216 432.

Mathematics

1 answer:

mafiozo [28]2 years ago

4 0

Answer:

1482

Step-by-step explanation:

2n+5

1) when n= 1

2(1)+5

= 7

2) when n=12

2(12)+5

=29

3) when n=29

2(29)+5

=63

4) when n=36

2(36)+5

=77

5) when n=216

2(216)+5

=437

6) when n=433

2(432)+5

=869

therefore, 7+29+63+77+437+869 = 1482

You might be interested in

6 3/4 + 3 1/8 please whats the answer

Natalka [10]

Answer:

9 7/8 is the answer, hope this helps!

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What are the solutions of the equation 6x2 + x-1=0 ?

Aleksandr [31]

Answer:

<u>Options B and D</u>

Step-by-step explanation:

6x² + x - 1 = 0

6x² + 3x - 2x - 1 = 0

3x(2x + 1) - 1(2x + 1) = 0

(3x - 1)(2x + 1)

x = 1/3 and -1/2

<u>Options B and D</u>

6 0

2 years ago

If 7 is P percent of 13, then P is a number between

monitta

Where’s the question if

7 0

3 years ago

Read 2 more answers

The Law and Order detectives enter a house at 11:30 am and found a man on the floor murdered. They take his body temperature fin

taurus [48]

Answer:

Time of murder = 10:39 am

Step-by-step explanation:

Let the equation of exponential function representing the final temperature of the body after time 't' is,

f(t) = $a(e)^{nt}$

Here, a = Initial temperature

n = Constant for the change in temperature

t = Duration

At 11:30 am temperature of the body was 91.8°F.

91.8 = $98.6(e)^{nt}$ --------(1)

Time to reach the body to the morgue = 12:30 pm

Duration to reach = 12:30 p.m. - 11:30 a.m.

= 1 hour

Therefore, equation will be,

84.4 = $91.8(e)^{n\times 1}$

eⁿ = $\frac{84.4}{91.8}$

ln(eⁿ) = ln(0.9194)

n = -0.08403

From equation (1),

91.8 = $98.6(e)^{-0.08403t}$

$(e)^{0.08403t}=\frac{98.6}{91.8}$

$ln[(e)^{0.08403t}]=ln[\frac{98.6}{91.8}]$

0.08403t = 0.07146

t = 0.85 hours

t ≈ 51 minutes

Therefore, murder was done 51 minutes before the detectives arrival.

Time of murder = 11:30 - 00:51

= 10:90 - 00:51

= 10:39 am

7 0

2 years ago

After solving the system x+2y=10 and x-2y=2. What is the sum of x+y equal to?

Masja [62]

Answer:

The sum of x and y is 8.

Step-by-step explanation:

x+2y=10

x-2y=2

------------

2x = 12, so x = 6. Substituting 6 for x in the 2nd equation, we get:

6 - 2y = 2, or

4 = 2y, or y = 2. The solution is therefore (6, 2).

The sum of x and y is 6 + 2 = 8 (answer)

5 0

2 years ago

Read 2 more answers