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nignag [31]
3 years ago
5

7 kids on the basketball team return sick from a weekend playing games at Lakenheath High school with a virus. The aggressive vi

rus spreads at 130% each day. How long many days till 500 students are sick at school?
Mathematics
1 answer:
Lilit [14]3 years ago
8 0

Answer:

It would take 6 days for 500 students to be affected.

Step-by-step explanation:

Given that:

1. Seven kids returned with the virus.

2. The aggressive virus spreads at 130% each day.

We want to find how many days until 500 students are infected by the virus.

First day:

7 students have the virus, 130% of 7 student will contract the virus again.

130% of 7 = (130/100) × 7

= 1.3 × 7 = 9.1 ≈ 9

9 new students are affected

New total affected = 7 + 9 = 16 students.

Day 2:

Affected = 1.3 × 16 = 20.8 ≈ 20

New total affected = 20 + 16 = 36

Day3

Affected = 1.3 × 36 = 46.8 ≈ 46

New total affected = 36 + 46 = 82

Day4

Affected = 1.3 × 82 = 106.6 ≈ 106

New total affected = 106 + 82 = 188

Day5

Affected = 1.3 × 188 = 244.4 ≈ 244

New total affected = 244 + 188 = 432

Day6

Affected = 1.3 × 432 = 561.6 ≈ 561

New total affected = 561 + 432 = 993

Therefore, it would take 6 days for 500 students to be affected.

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I need to know X for 8 and 10 if u feel like it. PLS
inn [45]

Answer:

8) <em>x</em>=9

10) 23 degrees

Step-by-step explanation:

8) vertical angles are congruent to each other so we can set the expressions as such and solve:

<u>7x</u> + 3 = <u>10x</u> - 24

<u>3</u> = 3x<u> - 24</u>

<u>27</u> = <u>3x</u>

9 = x

10) since the angles are complementary they equal 90 degrees, so we can set the expression like this and solve for <em>x</em>:

<u>12x</u> + 7 + <u>6x</u> - 7 = 90

18x <u>+ 7 - 7</u> = 90

<u>18x</u> = <u>90</u>

x = 5

now we plug it back into the expression equivalent to the measure of angle O:

<u>6(5)</u> -7

<u>30 - 7</u>

23 degrees

6 0
3 years ago
A cone with a mass of 6 g has a radius measuring 5 cm and a height of 2 cm. What is its density?
AlekseyPX

Volume of a cone is equal to pi*r^2*(h/3)

3.14*5^2*2/3 = 52.36 cubic cm.

Density = mass/volume

 6 grams/ 52.36 cm^3= 0.1146

Round to 2 decimal places to get D.0.11 g/cm^3

7 0
3 years ago
Read 2 more answers
Can somebody plz help me
mars1129 [50]

Choice 3Step-by-step explanation:

3x^2-19x-14

7 0
3 years ago
Read 2 more answers
Help!!! In the ____sq parts pls
Allisa [31]

Answer:

1. 63 sq m

2. 76 sq m

3. about 36.56 sq m or 24 + 4\pi

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just don’t want to waste my time in case you don’t want me to :)

4 0
3 years ago
Ivan purchased stock in a company at an initial price of $8 per share. The share value reached $18 after 10 days and then began
Butoxors [25]

The quadratic equation that best represents his model of the relationship between stock value and time is given by:

y = -0.0976(x - 10)^2 + 18, x \geq 0

The graph is given at the end of the answer.

<h3>What is the equation of a parabola given it’s vertex?</h3>

The equation of a quadratic function, of vertex (h,k), is given by:

y = a(x - h)^2 + k

In which a is the leading coefficient.

In this problem, the maximum value was a share value of $18 after 10 days, hence the vertex is:

(h,k) = (10,18).

Thus:

y = a(x - 10)^2 + 18

Since the initial price was of $8 per share, we have that:

8 = a(0 - 10)^2 + 18

-82a = 8

a = -\frac{8}{82}

a = -0.0976

Hence the equation is:

y = -0.0976(x - 10)^2 + 18, x \geq 0

At the end of the answer, the sketch of the graph is given.

More can be learned about quadratic equations at brainly.com/question/24737967

6 0
3 years ago
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