Answer:
Habrán 10175 enfermos a los 15 dias.
Step-by-step explanation:
La tasa de cambio de la población enferma por la epidemia de gripe es:
[tex]N'(t)=120t-3t^2[/tex]
Donde t es el tiempo en dias, y se sabe que la epidemia inició en N(0)=50.
a)
Para encontrar la función original que describe el comportamiento de la epidemia, debemos integrar la función:
[tex]N(t)=\int N'(t)dt[/tex]
[tex]N(t)=\int (120t-3t^2)dt[/tex]
Integrando:
[tex]\displaystyle N(t)=120\frac{t^2}{2}-3\frac{t^3}{3}+C[/tex]
Simplificando:
[tex]\displaystyle N(t)=60t^2-t^3+C[/tex]
Para determinar el valor de C, usamos la condición inicial N(0)=50:
[tex]\displaystyle 50=60(0)^2-(0)^3+C[/tex]
Se tiene que C=50, y la función queda determinada como:
[tex]\displaystyle N(t)=60t^2-t^3+50[/tex]
b) El número de enfermos a los t=15 dias se determina substituyendo el valor en la función original:
[tex]\displaystyle N(15)=60(15)^2-(15)^3+50[/tex]
Calculando:
[tex]N(15)=13500-3375+50=10175[/tex]
Habrán 10175 enfermos a los 15 dias.
What is the affect on the graph of the linear parent function f(x) equals X when FX is replaced by FX +3
Answer:
The graph of the f(x) will horizontal shift left by 3 when f(x) is replaced by f(x+3).
Step-by-step explanation:
We know that when we add a constant to the input of the parent function, we get a horizontal shift.
The direction of shifting depends upon the value of the added constantly. If the added constant is negative, the shift of the graph will be left and if the added constant is positive, the shift of the graph will be right.
For example, consider the function
f(x)
so adding [tex]3[/tex] in the put i.e. [tex]f(x+3)[/tex] would be a change on the inside of the function, giving a horizontal shift left by 3.
Therefore, the graph of the f(x) will horizontal shift left by 3 when f(x) is replaced by f(x+3).
Quick! Please Help Me ASAP!
Answer:
D
Step-by-step explanation:
whats 1+1 ill give you the brainliest PLS HELP
Answer:
2
Step-by-step explanation:
i believe it's 2 my dude
Answer:
2
Step-by-step explanation:
If you have one apple, and add another, you now have two. You can count 1,2,3 or use fingers
PLS HELP!!!
nevaeh is buying balloons for jaylah birthday party. the balloons come in packages of 4. find multiples of 4 to tell how many balloons she will have if she buys 2,3,or 4 packages
Answer: If she buys 2 packages she gets 8 balloons. If she buys 3 then it’s 12 balloons and for 4 packages it’s 16 balloons.
Step-by-step explanation:
reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee+reee=
Answer:
....................
Step-by-step explanation:
can anyone help pls?
I think its either B or C
The base of a triangle is 3 inches more than 2 times the height. If the area is 7 square inches,find the base and the height.
Step-by-step explanation:
the H =7 and the base = 24
what is negative 2 over 3 times negative 3 over 4?
-2/3 x -3/4=?
Answer:
0.5
Step-by-step explanation:
-14
Step-by-step explanation:
this is very eeasy question ookay step 1 cross multiply -2/3 *-3/4 okay and answer is -6 and -8 = -14 ookay sovled
In ΔTUV, v = 990 inches, t = 840 inches and ∠U=148°. Find the length of u, to the nearest inch.
Answer:
the answer is 1760
Step-by-step explanation:
Frank says that 2/10 of the grid below is shaded. Kendra says that 20/100 of the grid is shaded. Who is correct and why?
Answer:
They are both correct because each fraction can simplify down to 1/5.
If you divide 2/10 by 2 you get = 1/5
Divide 20/100 by 20 to get = 1/5
2. Twenty-four fourth graders are going on a field trip to the Academy of Science. They need to form 3 groups of students for the tour guides. How many students will be in each group? Show how you found your answer.
If x+3 is a factor of x^3-x^2-10x+A. What is the value of A?
Answer:
[tex]A = 6[/tex].
Step-by-step explanation:
Let [tex]a[/tex] denote a constant (a number, rather than a variable like [tex]x[/tex].)
Let [tex]f(x)[/tex] denote an expression about [tex]x[/tex] (for example,
By the factor theorem, if [tex](x - a)[/tex] is a factor of [tex]f(x)[/tex], then [tex]f(a) = 0[/tex]. In other words, if all mentions of [tex]x[/tex] in the expression [tex]f(x)\![/tex] are replaced with [tex]a[/tex], then the expression should evaluate to zero.
[tex](x + 3)[/tex] is equivalent to [tex](x - (-3))[/tex]. That is: [tex]a = -3[/tex].
Replace all mentions of [tex]x[/tex] in [tex]x^3 - x^2 - 10\, x + A[/tex] by [tex](-3)[/tex] to get:
[tex](-3)^3 - (-3)^2 - 10\times (-3) + A[/tex].
That should evaluate to zero. Therefore: [tex]-27 - 9 + 30 + A = 0[/tex]. Solve for [tex]A[/tex] to get [tex]A = 6[/tex].
| -7+5 | resuelve ejercicio con valor absoluto
Answer:12
Step-by-step explanation: absolute value will always be positive
how many $10 bills are equal to a 1000 bill?
Answer:
100
Step-by-step explanation:
because 10×100=1000
Answer:
100 of the $100 bills equals to $1000
Step-by-step explanation:
1000/100=100
Item 3
Which of the following is the closest approximation of 271−−−√
271
?
A bag contains 6 red marbles, 6 white marbles, and 4 blue marbles. Find P ( red or blue)
Answer:
5/8Step-by-step explanation:
To find the combined probability we will write as a fraction with the number of occurrences for the specified conditions.
Here, we have 16 marbles total (as 6 + 6 + 4 = 16) and we want to find the probabiliy of choosing either a red or blue marble out of the 16. There are 10 marbles that are either red or blue (as 16 - 6 = 10) so the fraction would be 10/16. However, we still need to get this simplest form.
[tex]\frac{10}{16} = \frac{5}{8}[/tex]
As we cannot simplify 5/8 any further, this is the final answer.
I need help with finding x
ill give brainiest to whoever shows work
Answer:
x=-5
Step-by-step explanation:
-3-(7x+5)+9x=x-8+3x+10
Distribute the -1 to the terms in parentheses.
-3-7x-5+9x=x-8+3x+10
Combine like terms on both sides.
-8+2x=4x+2
Add 8 to both sides.
2x=4x+10
Subtract 4x from both sides.
-2x=10
Divide both sides by -2
x=-5
HTH :)
H. C. F of 36,60.and 72
Answer:
H. C. F=12
Step-by-step explanation:
What is the measure of
I believe it is 56 degrees. that's the answer I put in and I got it right
pls can some one help if you like
A roller coaster moves along an inclined linear path before it reaches its maximum height. The car moves at a constant speed and gains 4 meters in height every 3 seconds.
The slope of the line that represents the height of the car in meters in terms of time in seconds is Answer 1
If the car takes 54 seconds to reach the maximum height, then the maximum height above the ground is answer2
meters.
tell me the answer pls
.
Answer:well first you add 3 and 4 then
Step-by-step explanation:
During a food drive, a local middle school collected 8,502 canned food items. Each of the 31 classrooms
that participated in the drive donated about the same number of items. Estimate the number of items
each classroom donated.
Each class donated about
cans.
Answer:
it would be around 274
Step-by-step explanation:
if you divide 8,502 by 31 you will get 274.258064516129, so the estimate would be 274.
each classroom donated about 274 canned food items.
Fill in the blank with the missing term in the pattern. 4,-8, 16, ______ 64
Answer:
-32
Step-by-step explanation:
Because if you multiply
4 x-2=-8
-8 x -2=16
16 x -2 =-32
-32 x -2=64
A gas has a volume of 5.0 L at a pressure of 50kPa. What happens to the volume when then the pressure is increased 125kPa. The temperature does not change.
9514 1404 393
Answer:
volume goes to 2.0 L
Step-by-step explanation:
At constant temperature, volume and pressure are inversely related. Increasing the pressure by a factor of 125/50 = 2.5 will cause the volume to be reduced by that factor.
volume = 5.0L / 2.5
volume = 2.0 L
Write an equation in slope-intercept form of the line shown.
Answer:
y = 3/4x - 2
Step-by-step explanation:
slope intercept form: y = mx + b
y-intercept(when x= 0) is given by b
slope is given by m
lets find the slope using the two given points, (4,1) and (8,4)
m = y2-y1 / x2-x1
m = 4 - 1 / 8 - 4
m = 3/4
Now use any of the given points to begin writing your equation, which will help you find the y intercept - ill use (4,1).
1 = 3/4(4) - b
1 = 3 - b
b = -2
now you have m and b so you can finish writing your equation.
y = mx + b
y = 3/4x - 2
convert 17 kilometers into yards round your answer to the nearest whole number.
The equivalent of 17 km in yards to nearest whole number is 18,591 yards.
The given parameters;
17 kilometers to yardsTo convert 17 km to yards, we find the equivalent of 1 kilometer in yards.
1 km = 1093.61 yards
Now, multiply the 17 km with its equivalent in yards as shown below;
[tex]= 17 \ km\times \frac{1093.61 \ yards}{1 \ km} \\\\= 18,591.37 \ yards\\\\\approx 18,591 \ yards[/tex]
Thus, the equivalent of 17 km in yards to nearest whole number is 18,591 yards.
Learn more here: https://brainly.com/question/17192728
What’s 9 + 10?
a lemonade recipe calls for 6 gallons of water how many quarts of water are needed for the recipe
Answer:
24 quarts
Step-by-step explanation:
1 gallon = 4 quarts. 6 gallons x 4 = 24
A storage tank is made of a 4 m tall cylinder joined by a 3 m tall cone . If the diameter of the cylinder is 5 m, what is the radius of the end of the cone if 0.75 m has been cut off the tip
A cheetah can run at its top speed for about 25 seconds. Complete the table to represent a cheetah running at a constant speed.
Answer: For meters it is 3,000
Step-by-step explanation: Do 120 x 25= 3,000
Step-by-step explanation:
120 x 25 = 3000
270 ➗ 25 = 10.8
120 ➗ 4 = 30
3000 ➗ 25 = 120
270 ➗ 10.8 = 25
Noah has a coupon for 30% off at his favorite clothing
store. He uses it to buy a hoodie and a pair of jeans.
Noah paid $28 for the jeans after using the coupon.
What is the regular price of the jeans?
Answer:
$21.54Step-by-step explanation:
price paid = regular price ( 1 + coupon in percent)
$28 = regular price x (1.3)
regular price = $28 / 1.3
= $21.54
The regular price of the jeans is equal to $93.33.
Let the cost price be C.Given the following data:
Coupon = 30%Selling price = $28To calculate the regular price of the jeans:
Since Noah had a coupon for 30% off, it simply means that he would get a discount of 30% for any clothing he buys at his favorite clothing store. Thus, the cost price of the jean multiplied by 0.3 would give the amount of money to be paid by Noah, which is $28.
Mathematically, the selling price is given by:
[tex]28 = \frac{30}{100} \times C\\\\2800 =30C\\\\C=\frac{2800}{30}[/tex]
C = $93.33
Read more: https://brainly.com/question/25803541
