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Sati [7]
3 years ago
7

Researchers at the Centers for Disease Control and Prevention have been studying the decay pattern of a new virus with a decay r

ate of 19% per hour. They start with 300 viruses that they want to check on in the next 7 hours. How many viruses will they find in 7 hours? Round your answer to the nearest whole number
Mathematics
1 answer:
klemol [59]3 years ago
5 0

Answer:

After 7 hours will be 1.95489493x10^12 viruses

Step-by-step explanation:

If the virus spread with 19% per hour after one hour it will increase 57 and continue in the 300+((300*0.19)^7) form, we just need to caculate the form

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At the north campus of a performing arts​ school, 30​% of the students are music majors. At the south​ campus, 70​% of the stude
Ivenika [448]

Answer:

The north campus had 600 students (180 music majors)

The south campus had 400 students (280 music majors)

Step-by-step explanation:

x = number of students at the north campus before the merger

If the total of students for the two school is given as 1000, so:

(1000 - x) =  number of students at the south campus before the merger.

The equation for music major is:

0,3x + 0,7(1000-x) = 0,46(1000)

0,3x + 700 - 0,7x = 460

0,3x - 0,7x = 460 - 700

- 0,4x = -240

x = -240/-0,4

x = 600 -----> total number of students at the north campus

600*(0,3) = 180 music majors at the north

100 - 600 = 400 ------> total number of students at the south campus

400*(0,7) = 280------>music majors at the south

4 0
3 years ago
Monica is a lawyer who earns $8,322.65 every month. She spends $830.98 on rent, $210.36 on food, and $120.45 on gas every month.
Step2247 [10]
She would have $7160.86 left over in cash here's why.....
she starts off with $8,322.65 and spends $830.98 on rent $8,322.65-$830.98= $7,491.67 
then spends $210.36 on food and another $120.45 on gas 
$7,491.67-$210.36= $7,281.31 - $120.45= $7,160.86 <---- Left over $
7 0
3 years ago
I need help with questions 11. Help me.
zysi [14]
That diagram can be split into a right angled triangle of base 7 and of height 4 + 5.2 + 2 = 11.2, and a square of length of 5.2 So the are of the total shape is the area of the right angled triangle + the area of the square.
=\frac{11.2*7}{2} +5.2^2=66.24
Please mark me as brainliest.

8 0
3 years ago
How do you convert 0.580 (80repeating) as a fraction?
Gnom [1K]

Answer:

58/100

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
HELP FAST PLEASE !!! This symbol π is called ___ and is approximately equal to ___ .
pashok25 [27]
Pi and it’s equal to 3.14
7 0
3 years ago
Read 2 more answers
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