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Zinaida [17]
3 years ago
9

PLEASE ANSWER + BRAINLIEST!!!!

Mathematics
1 answer:
Maslowich3 years ago
5 0

Answer: aₙ = [d-(d-n)]*10

where n is the number of questions answered correctly and d is the total amount of questions.

Step-by-step explanation:

By understanding the question we can tell than she will be rewarded for each corrct answer. so, how many wrong answers she/he can have?

d-n= Total number of wrong answers

d- (d-n) = Total number of correct answers

price: 10 for each correct answer, so:

price: [d-(d-n)]*10

Therefore:

aₙ = [d-(d-n)]*10

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Write an equation in standard form of the hyperbola described.
marishachu [46]

Check the picture below, so the hyperbola looks more or less like so, so let's find the length of the conjugate axis, or namely let's find the "b" component.

\textit{hyperbolas, horizontal traverse axis } \\\\ \cfrac{(x- h)^2}{ a^2}-\cfrac{(y- k)^2}{ b^2}=1 \qquad \begin{cases} center\ ( h, k)\\ vertices\ ( h\pm a, k)\\ c=\textit{distance from}\\ \qquad \textit{center to foci}\\ \qquad \sqrt{ a ^2 + b ^2} \end{cases} \\\\[-0.35em] ~\dotfill

\begin{cases} h=0\\ k=0\\ a=2\\ c=4 \end{cases}\implies \cfrac{(x-0)^2}{2^2}-\cfrac{(y-0)^2}{b^2} \\\\\\ c^2=a^2+b^2\implies 4^2=2^2+b^2\implies 16=4+b^2\implies \underline{12=b^2} \\\\\\ \cfrac{(x-0)^2}{2^2}-\cfrac{(y-0)^2}{12}\implies \boxed{\cfrac{x^2}{4}-\cfrac{y^2}{12}}

5 0
2 years ago
An office and apartment building is made up of modules. Each module is a rectangular prism. The building has 150 modules, and is
Elis [28]

Answer:

Part 1) 10 modules per floor

Part 2) Two different rectangular prism

Step-by-step explanation:

Part 1)

Let

x ----> the number of modules

y ---> the number of stories

we have

x=150\ modules\\y=15\ stories

Divide the number of modules by the number of stories

so

\frac{x}{y}=\frac{150}{15}=10\ \frac{modules}{floor}

Part 2) How many different rectangular prisms could be made from that number?

The number is 10

Look at the factors of  10

They are  1,2 ,4,5 and 10

Pick any two of these factors and determine if there is a third value from this list so that the product of the three factors is 10

There are 2 combinations that will work :

1 0×1×1

2 ×5×1

4 0
3 years ago
What is the proper fraction for 9/2?
love history [14]

Answer:4½

Step-by-step explanation:all you need do is check how many times 2 can divide 9 which is 4, then write the remainder at the top which is 1 and the divisor at the bottom which is 2

7 0
3 years ago
Exactly 32% of the students in a school play a sport. Fifty students are randomly selected to determine the probability that, at
faltersainse [42]

A binomial probability density function should be used to represent the probability

<h3>How to determine the type of probability density?</h3>

The given parameters are:

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  • Number of students selected, p = 50
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The proportion that plays sport indicates that

68% of the students do not play sport

So, we have two events, which are

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When there are two possible events, then the binomial probability density function should be used

Read more about binomial probability density at:

brainly.com/question/15246027

#SPJ1

8 0
2 years ago
What colour are the berries of the mistletoe plant?
hichkok12 [17]
The answer is white. Hope this helps
8 0
3 years ago
Read 2 more answers
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