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NikAS [45]
3 years ago
8

A quantity with an initial value of 920 decays exponentially at a rate of 85% every week. What is the value of the quantity afte

r 21 days, to the nearest hundredth?
Mathematics
2 answers:
Serga [27]3 years ago
7 0

Answer:

≈3.11

Step-by-step explanation:

dangina [55]3 years ago
4 0

Answer:

920 * .85 = 782       One week

782 * .85 = 664.70  Two weeks

664.70 * .85 = 564.995 Three weeks

Step-by-step explanation:

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WILL MARK BRAINLIEST '<br> IF YOU DONT KNOW DONT ANSWER
Soloha48 [4]

Answer: A) Alternate Exterior

Step-by-step explanation:

Let's find out the defenition of alternate exterior; "If a pair of parallel lines are cut by a transversal line, then the alternate exterior angles are congruent".

I hope this helps!

8 0
3 years ago
Write the following expression. The quantity 81 minus 5k, squared
Stella [2.4K]

Answer:

81-25k²

Step-by-step explanation:

We need to write the expression for "The quantity 81 minus 5k, squared".

Square of any number x is given by x².

Square of 5k is given by : (5k)²= 5²×k²=25k²

Now subtract 25k² from 81.

It means we get : 81-25k². It is required expression.

6 0
4 years ago
Two large topping pizzas cost $25.00. what is the constant of proportionality (k)?
Gemiola [76]
2k = 25

Divide 2 on each side

k = 12.5

Each pizza would cost $12.50

Hope this helps!

5 0
4 years ago
Verify the basic identity. What is the domain of validity?cot theta = cos theta csc thetasee image
mr Goodwill [35]

Solution

Given the function below

cot\theta=\cos\theta csc\theta

Where

csc\theta=\frac{1}{\sin\theta}\begin{gathered} cot\theta=\cos\theta csc\theta \\ cot\theta=\cos\theta\times\frac{1}{\sin} \\ cot\theta=\frac{\cos\theta}{\sin\theta} \end{gathered}

Also recall that the contangent formula is

cot\theta=\frac{\cos\theta}{\sin\theta}

Thus;

\begin{gathered} cot\theta=\cos\theta csc\theta \\ \frac{\cos\theta}{\sin\theta}=\frac{\cos\theta}{\sin\theta} \end{gathered}

From the above deduction,

sinθ is the denominator,

Hence, the domain of validity is defined for the set of real numbers except for sinθ = 0

6 0
2 years ago
3 years younger than her sister (s = sister’s age)
NISA [10]
The answer is x=s-3 (x is her age)
5 0
3 years ago
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