Answers
Answer:
maybe the second?
Step-by-step explanation:
Related Questions
A culture of bacteria has an initial population of 470 bacteria and doubles every 8 hours. Using the formula P_t = P_0\cdot 2^{\frac{t}{d}}P t =P 0 ⋅2 d t , where P_tP t is the population after t hours, P_0P 0 is the initial population, t is the time in hours and d is the doubling time, what is the population of bacteria in the culture after 7 hours, to the nearest whole number?
Answers
Answer:
Step-by-step explanation:
The population of bacteria in the culture after 7 hours is approximately 883.
What is an exponential function?Several real-world phenomena, including population expansion, radioactive decay, compound interest, and the spread of diseases, are modeled using exponential functions. In calculus, where they are used to define the exponential and logarithmic functions—essential ideas in calculus and other fields of mathematics—they also play a significant role.
Using the formula [tex]P_t = P_0 \times 2^{\frac{t}{d}}[/tex], where P_t is the population after t hours, P₀ is the initial population, t is the time in hours and d is the doubling time, we can find the population of bacteria in the culture after 7 hours as follows:
Since the initial population is 470, we have P₀ = 470.
The doubling time is 8 hours, so we have d = 8.
Substituting these values into the formula, we get:
[tex]P_7 = 470 \times 2^{\frac{7}{8}}[/tex]
P₇≈ 882.77
To know more about an exponential function follow
https://brainly.com/question/22967542
#SPJ2
Rachel had a loan for $4,000 loan for 4 years.
She paid a total of $608 in simple interest over the 4 years.
What was the annual interest rate for the loan?
Answers
9514 1404 393
Answer:
3.8%
Step-by-step explanation:
The interest on a simple-interest loan is ...
I = Prt
where P is the principal value, r is the annual rate, and t is the number of years.
Solving for r, we get ...
r = I/(Pt) = 608/(4000×4) = 0.038 = 3.8%
The annual interest rate for the loan was 3.8%.
PLEASEE HELP
EXTRA POINTS
BRAINLIEST
Painter Pete uses a ladder to reach a second story window on the house he is
painting. The bottom of the window is 20 feet above the ground. The foot of the
ladder 15 feet from the house. How long is the ladder?
Answers
Answer:
25 feet
Step-by-step explanation:
20^2 + 15^2 = 625
square root of 625 is 25
Answer:
that's a big ladder
35ft
Step-by-step explanation:
Which expression is equivalent to (6^-2)^3
Answers
6^6 is equal to 46656
X+1/2=x-1/2 true or false?
Answers
I need a tutor like ASAP because my mom is going to kill me.
Answers
Answer:
Ask you school if they have free tutoring. A lot of schools use the honor students to tutor kids that need help in school.
Step-by-step explanation:
plssssssssssssssssss helpppppppppppppppppppppppppppppppppppppppppppppppppp
Answers
3.5.2 Test (CSI) Question 6 of 12 Use the area of the rectangle to find the area of the triangle. 5 ft 10 ft O A. The area of the triangle is 25 square feet, because the area of the rectangle is 50 square feet O B. The area of the triangle is 25 square feet, because the area of the rectangle is 25 square feet C. The area of the triangle is 50 square feet, because the area of the rectangle is 50 square feet. D. The area of the triangle is 50 square feet, because the area of the rectangle is 100 square feet. SUBMIT PREVIOUS e 99+ Type here to search
Answers
Answer:
c
Step-by-step explanation:
Here is the equation help
Answers
Answer: this might help I’m not sure
Step-by-step explanation:
Answer:
5m+3m=8m
simplified
Step-by-step explanation:
combine all m's together 5m's +3m's =8m's
(☆▽☆)
Which statements are true about triangle ABC and its translated image, A'B'C'? Select two options
Answers
Find the circumference of a circle with a diameter of 35 ft. Use 22/7 for π.
Answers
Answer:
110
Step-by-step explanation:
the equation for circumference of a circle is 2 multiplied by pie multiplied by radius. so you do 22/7 multiply that by two and then divide 35 by 2 and get 17.5 and multiply that by the pie times 2
look at pic 10 points
Answers
Answer:
120
Step-by-step explanation: 10 x 12 = 120 m. Hope this helps
⚠️⚠️⚠️HELP HELP HELP IMAGE ATTACHED EXTRA POINTS
Answers
Answer:
2
Step-by-step explanation:
3/4(5x - 3) + 8 = 17.
Answers
Answer:
x=3
Step-by-step explanation:
No BS and show all of your work please and you must use the 1% or 10% method which I don’t know what that is LOL
Answers
Answers:
38% of 15 = 5.7
29% of 75 = 21.75
4% of 220 = 8.8
No idea what the 1% or 10% method is either. But these answers would be better then to leave the questions blank.
In the following equation, when x=0, what is the value of y?
3x + 4y = 12
Answers
Answer:
(3)(0)+4y=12
Step 1: Simplify both sides of the equation.
(3)(0)+4y=12
0+4y=12
(4y)+(0)=12(Combine Like Terms)
4y=12
4y=12
Step 2: Divide both sides by 4.
4y
4
=
12
4
y=3
Answer:
C. Y = 3
Step-by-step explanation:
The test results for 4 students are: 96, 83, 78, and 83. If one more student's test score of 87 is added, what would increase?
A
median
B
mean
C
mode
D
range
Answers
Answer:
b
Step-by-step explanation:
g The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC). A local hospital randomly selects five births and lets the random variable X count the number not resulting in a defect. Assume the births are independent. What is the probability that at least one of the births results in a defect
Answers
Answer:
0.1426 = 14.26% probability that at least one of the births results in a defect.
Step-by-step explanation:
For each birth, there are only two possible outcomes. Either it results in a defect, or it does not. The probability that a birth results in a defect is independent of any other birth. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC).
This means that [tex]p = \frac{1}{33}[/tex]
A local hospital randomly selects five births.
This means that [tex]n = 5[/tex]
What is the probability that at least one of the births results in a defect?
This is:
[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]
In which
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{5,0}.(\frac{1}{33})^{0}.(\frac{32}{33})^{5} = 0.8574[/tex]
[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.8574 = 0.1426[/tex]
0.1426 = 14.26% probability that at least one of the births results in a defect.
find the opposite of the integer 10
Answers
From an observation point A, a forest ranger sights a fire at a bearing of 215°50'. From a point b, 8 miles due west of A another ranger sights the fire at a bearing of 125°50'. Approximate to the nearest tenth of a mile, the distance of the fire from A.
Answers
Answer:
Step-by-steYou have two angles,
A=32°20'
B=57°40'
so, angle F at the fire, is 90°
d/5 = cosA = .845
d = 4.2 mi
If angle F had not been 90°, then using the law of sines,
d/sinA = 5/sinF
for this problem, sinF = 1p explanation:
Answer:
Step-by-step explanation:
Which is the graph of linear inequality x + 2y <= 12
Answers
X+2y=12-12
X+2y-12=0
Answer:
B
Step-by-step explanation:
i got a 95% so i thinks its right
Pls help help help pls
Answers
Answer:
Its the bottom left one :)
Step-by-step explanation:
Please help I have a lot of other due assignments and I don’t have Time and paper thx:)
Answers
Median: 69
First Quartile: 65.5
Third Quartile: 73
Interquartile Range: 7.5
Step-by-step explanation:
First, put all of the numbers in order.
63, 64, 67, 68, 70, 72, 74, 76.
Median
For the median, it is the center of the data set.
To find the median of this data set, add 68, and 70, then divide by 2.
The Median is 69.
First Quartile
To find the first quartile, find the range below the median (63-68).
Find the median of that range.
Add 64 & 67 together, then divide by 2.
The first quartile = 65.5
Third Quartile
Do the same as the first quartile, but do it with the range above the median (70-76).
Add 72 & 74 together, then divide by 2.
The third quartile = 73.
Interquartile Range
Now, take the first and third quartile, and subtract.
[tex]73-65.5=IR[/tex]
[tex]7.5 = IR[/tex]
The interquartile range is 7.5.
Marco is turning the expression (x-4)^2 into a trinomial. He writes down what is shown below. What is his error?
Answers
=x^2-4x-4x+16
=x^2-8x+16
it’s +16, not negative. he forgot that when you add two negatives together, it becomes positive.
Answer:
Step-by-step explanation:
first, let's solve the equation ourselves.
(x-4)^2= (x-4)(x-4)= x^2−8x+16
now, we can see what's different about the two.
we can say that Marco's answer had the number 16 as a negative, when it was supposed to be positive. Marco wrote the incorrect sign.
please help, i'll give brainliest. (don't send a link please)
Answers
Answer:
A
Step-by-step explanation:
y+5<8
Subtract 5 from each side
5+5-5 <8-5
y<3
Since there is no equals sign, there is an open circle at 3
y is less than so the line goes to the left
Choice A
Tiffany said that there is no correlation between being a girl and playing in an intramural basketball league. Do you agree or disagree with Tiffany? Explain.
A.
Disagree, because the frequency indicates that there is a negative correlation to being a girl and being in an intramural league.
B.
Agreed; there is no correlation.
C.
Agree, because the frequency indicates that there is a positive correlation to being a girl and being in an intramural league.
Answers
Answer:
b
Step-by-step explanation:
Answer the question please which of the following shows numbers in order from least to greatest
Answers
Answer:
I think it's b I'm not sure I'm sorry if it's wrong
Timmy and Sarah head out to dinner and Garfinkels in Vaile. Timmy brings $40 with him. If buy two French Dips costing $10.95 a piece and two sodas costs $1.95 each, how much does Timmy have left if there is a 6% sales tax and they tip 20% on the food including the sales tax
Answers
Answer:
$3.80
Step-by-step explanation: :)
Discount 75%, Sale Price $74.75, Original Price-?
Answers
Answer:
You will pay $18.69 for a item
Step-by-step explanation:
if you buy an item at $74.75 with 75% discount, you will pay 74.75 - 56.0625 = 18.69 dollars.
Answer:
$299
Step-by-step explanation:
The discount is 75%, so the sale price represents 25% of the original price.
25% : $74.75
(multiply both sides by 4 to get 100%)
100% : $299
A. 7
B. 8
C.9
D. 6
FOR BRAINLIST!!
Answers
Answer:
It is going to be C.9 hope this help hopefully not late. :D
Step-by-step explanation:
Its like a train so (2x3)+8x(7x-2)= your answer but you can solve it in a calculator :D
Answer:
D. 7
Step-by-step explanation:
According to this problem, the sum of the angles is 90°. This means we're adding.
2x + 3x + 8 + 7x - 2 = 90.
To make this easier to solve, we can combine like terms.
2x + 3x + 7x = 12x.
The remaining numbers are 8 and -2.
8 + -2 = 6
Our final expression is:
12x + 6 = 90
First, subtract 90 from 6 and get 84.
Lastly, divide the difference (84) by 12.
12x = 84
84 / 12 = 7.
Therefore, the value of x is 7.
