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Nadusha1986 [10]
3 years ago
9

Evaluate 14 sigma n-1 3n+2

Mathematics
1 answer:
Mila [183]3 years ago
4 0
The answer is 2n-301 
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A book has a front and a back and 400 pages. The front and back cover are each 0.9mm thick measured to 1 decimal place. Each pag
zhuklara [117]

The minimum thickness of the book would simply be the sum of the thickness of the two cover pages and all the pages in between. That is:

minimum thickness = 0.9 mm * 2 + 0.13 mm * 400

<span>minimum thickness = 53.8 mm</span>

3 0
3 years ago
PLEASE HELP! I ONLY HAVE 15 MINS! WILL MARK BRAINLIEST! 20 POINTS! Suppose N coins lie heads up on a table. In one turn, you can
Romashka [77]

Answer: it is only possible if N = 2.

Step-by-step explanation:

if you have N  heads up coins.

turn one, you turn N -1 coins up.

Now you have N - 1 coins tails up and one coin heads up.

Second turn, you turn N - 1 coins, (if you select the same N - 1 coins as before, you will end in the initial situation, so now we will change one coin, this time we will select the coin that is still heads up and we will leave one of the tails up unchanged)

Then we have N - 2 coins heads up and 2 coins tails up.

Now, we can select any N -1 coins to flip, and we will end with with N - 1 coins tail up and 1 coin heads up.

and this cycle will repeat.

Then the only situation is having N = 2.

Becuase when we have N -2 coins heads up and 2 coins tails up we will have: N - 2 = 0, so we have 0 coins heads up and 2 coins tails up.

This means that the statement is only true if N = 2.

6 0
3 years ago
What is the value of a for the Exponential function in the graph represented in the form of f(x) =a(b^)
artcher [175]

Answer:

Step-by-step explanation:

When x=0, y = ab⁰ = a

The y-intercept of the graph is 3, so a=3.

7 0
3 years ago
An inequality is a statement that compares two expressions that are strictly equal.
djyliett [7]

Answer:

False

Step-by-step explanation:

an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.

5 0
3 years ago
Read 2 more answers
One number is 3 times more than another number. Their sum is 20. What are the two numbers?
Georgia [21]
3x=y
X+Y=20
5=x and 15=y are the answer. You can use elimination or substitution or guess and check!
6 0
3 years ago
Read 2 more answers
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