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kumpel [21]
2 years ago
9

Need help ASAP! i will give brainliest :)

Mathematics
2 answers:
emmasim [6.3K]2 years ago
7 0

Answer:

96 cm^2

Step-by-step explanation:

Total Surface Area of a square pyramid:

A = L + B = a2 + a√(a2 + 4h2))

A = a(a + √(a2 + 4h2))

olchik [2.2K]2 years ago
6 0

The Answer is:

96 cm^2

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he​ half-life for a link on a social network website is 2.6 hours. Write an exponential function T that gives the percentage of
pychu [463]

Answer:

% Remaining= [1-(1/2)^{\frac{t}{2.6}}]x100

And replacing the value t =5.5 hours we got:

% Remaining= [1-(1/2)^{\frac{5.5}{2.6}}]x100 =76.922\%

Step-by-step explanation:

Previous concepts

The half-life is defined "as the amount of time it takes a given quantity to decrease to half of its initial value. The term is most commonly used in relation to atoms undergoing radioactive decay, but can be used to describe other types of decay, whether exponential or not".

Solution to the problem

The half life model is given by the following expression:

A(t) = A_o (1/2)^{\frac{t}{h}}

Where A(t) represent the amount after t hours.

A_o represent the initial amount

t the number of hours

h=2.6 hours the half life

And we want to estimate the % after 5.5 hours. On this case we can begin finding the amount after 5.5 hours like this:

A(5.5) = A_o (1/2)^{\frac{5.5}{2.6}}

Now in order to find the percentage relative to the initial amount w can use the definition of relative change like this:

% Remaining = \frac{|A_o - A_o(1/2)^{\frac{5.5}{2.6}}|}{A_o} x100

We can take common factor A_o and we got:

% Remaining= [1-(1/2)^{\frac{t}{2.6}}]x100

And replacing the value t =5.5 hours we got:

% Remaining = [1-(1/2)^{\frac{5.5}{2.6}}]x100 =76.922\%

5 0
3 years ago
What is 720° converted to radians?
Virty [35]

Answer: The correct answer is D

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the square of the sum of 7 and 6.
Masteriza [31]

Answer:

169

Step-by-step explanation:

7 + 6 = 13

13² = 169

hope this helps

6 0
2 years ago
Read 2 more answers
Brainliest being offered for the RIGHT answer.
nikdorinn [45]
<span> Start with the given equation 


 Subtract 6 from both sides. 


 Combine like terms. 


Now let's graph  </span>
5 0
3 years ago
The length of a shadow of a building is 26 m. The distance from the top of the building to the tip of the shadow is 37 m. Find t
Juliette [100K]

Answer:

26.3 m

Step-by-step explanation:

The length of a shadow of a building is 26 m. The distance from the top of the building to the tip of the shadow is 37 m. Find the height of the building.

We solve the above question using Pythagoras theorem

c² = a² + b²

Where

c = Longest part of the triangle = 37 m

a = Height of the triangle = ?

b = Length of the shadow = 26 m

Hence:

37² = a² + 26²

a² = 37² - 26²

a = √37² - 26²

a = √(693)

a = 26.324893162m

Approximately = 26.3 m

3 0
3 years ago
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