1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tanzania [10]
2 years ago
15

Rafael is a virologist who wants to determine the number of people who might be affected by a particular disease 30 years from n

ow. The virologist knows there are 600 people infected with the disease now, and the spread of the disease has a growth rate of 0.085 per year. What is the number of infected people 30 years from now?
Mathematics
1 answer:
Anni [7]2 years ago
7 0

Answer:

1,530 people

Step-by-step explanation:

First do 0.085 times 600 to get 51 (this stands for 51 new ppl per year)

Second Do 51 times 30 to get 1,530

1,530 will stand for infected ppl of this disease in 30 years

You might be interested in
Solve the problem. Express your answer to the correct number of significant figures. 6. 221 × 7. 11 − 13. 7 =.
Tresset [83]

Answer:

30.5

Step-by-step explanation:

hope this helps mark me brainliest:)

7 0
2 years ago
How many sets of three consecutive integers are there in which the sum of the three integers equals their product?
skad [1K]

Answer:

3

Step-by-step explanation:

since the 3 integers are consecutive, we are dealing with x, x+1, x+2.

and their sum is the same as their product :

x + (x + 1) + (x + 2) = x(x + 1)(x + 2)

3x + 3 = x(x² + 3x + 2) = x³ + 3x² + 2x

x³ + 3x² - x - 3 = 0

this is a polynomial of third degree.

and as such it has 3 solutions.

of course, it could be that some of them are the same or are even in the realm of complex numbers (i = sqrt(-1)), but usually these 3 solutions are different real numbers.

I tried x=1 just to see, and, hey, it is a solution for this equation.

x = 1 means that the other 2 consecutive integers are 2 and 3.

and indeed, 1+2+3 = 1×2×3 = 6.

now it is easier to find the other 2 solutions, as a zero solution can be expressed as a factor of the whole expression.

for x = 1 the factor term is (x - 1), as this term is then turning 0, when x = 1.

I can divide the main expression by this factor and then analyze the quotient about the other 2 solutions.

x³ + 3x² - x - 3 : x - 1 = x² + 4x + 3

- x³ - x²

----------------

0 4x² - x

- 4x² - 4x

-----------------------

0 + 3x - 3

- 3x - 3

---------------------------

0 0

so, the original expression can be written as

(x² + 4x + 3)(x - 1).

now we need to find the 2 zero solutions for x²+4x+3

the general solution to a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = 4

c = 3

so,

x = (-4 ± sqrt(4² - 4×1×3))/(2×1) =

= (-4 ± sqrt(16 - 12))/2 = (-4 ± sqrt(4))/2 =

= (-4 ± 2)/2 = -2 ± 1

x1 = -2 + 1 = -1

x2 = -2 - 1 = -3

so, we have the additional solutions :

-1 0 1

-3 -2 -1

-1 + 0 + 1 = -1×0×1 = 0

-3 + -2 + -1 = -3×-2×-1 = -6

and there we have it fully proven :

there are 3 different sets of 3 consecutive integers with the same sum as product.

4 0
2 years ago
7x^2+3y^2+12x+2y-6=0 Help me find the value of a,b,c and the discriminant number
Mrac [35]

Answer:

b o a h d

Step-by-step explanation:

1*5 3%9 46% &45 that is the answer

7 0
1 year ago
A large bag of sand weighs 48.5 pounds a small bag of sand weighs 24.6 pounds if Mrs.Waggoner buys a large bag and A small bag h
Lera25 [3.4K]

Answer: 73.1 pounds of sand.

Step-by-step explanation: 48.5 Pounds (Big Bag) + 24.6 (Small Bag)

48.5+24.6 is equal to 73.1 pounds of sand. That is how much sand was purchased altogether.

3 0
3 years ago
30 POINTS!!!! PLEASE HELP!!! <br><br><br> What is the slope of the line that contains these points?
castortr0y [4]

Answer:

negative

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What’s the answer to 0.462 / 0.2
    5·2 answers
  • Math question can someone answer this
    12·2 answers
  • Which congruence theorems can be used to prove ΔABR ≅ ΔACR? Select three options
    7·2 answers
  • Rewrite thid equation in slope-intercept form: 8x + 7y = 12 in slope-intercept form.
    5·1 answer
  • The answer to this question 180, but how?
    13·1 answer
  • There are 5 students in a small class. To make a team, the names of the 3 of them will be drawn from a hat. How many different t
    8·1 answer
  • -7 (-1-m)????????????????????
    13·1 answer
  • Find the 50ty term if the nth term is 5n-3
    9·1 answer
  • I could really use your help:)
    6·1 answer
  • why do u get to determain how many daily limits i can have u encourge alot of a ton people to buy you're vip for over priced pri
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!