Answer:
P(t) = 3000 * 4^(t/10)
Step-by-step explanation:
There is more than one way to get an exponential function out of the information given. The way the question is worded, however, seems to suggest the following type of answer:
One general form of the exponential function is y = a·bx, where a is the initial value, and b is the growth or decay factor. So right away we can say that a = 2300.
Now for the growth factor. When something is increasing or decreasing by a certain percentage, we are adding or subtracting that percentage to the 100% (which is equal to 1) that exists currently. So here we're increasing by 11%, or 0.11. Then the growth factor b is (1 + 0.11), or 1.11.
Studies have suggusted that twins, in their early years, tend to have lower IQs and pick up language more slowly than non-twins. The slower intellectual growth may be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given
to twins per week by their parents. A sample of 26 sets of two-year-old twin boys was taken, and after one week the attention time
received was recorded. The mean was found to be 27.4 hours with a standard deviation of 11,2 hours. Use this information to contruc
a 98% confidence interval for the mean attention time given to all twin boys by their parents, assuming that the population is
approximately normally distributed, Round the endpoints to one decimal place.
Confidence interval:( , )
Answer:
Confidence interval: (21.9, 32.9).
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 26 - 1 = 25
98% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 25 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.98}{2} = 0.99[/tex]. So we have T = 2.485
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.485\frac{11.2}{\sqrt{26}} = 5.5[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 27.4 - 5.5 = 21.9 hours
The upper end of the interval is the sample mean added to M. So it is 27.4 + 5.5 = 32.9 hours
Confidence interval: (21.9, 32.9).
Answer these two questions ASAP please, help is appreciated.
Answer:
B and A
Step-by-step explanation:
Find the area of this circle. Use 3.14 for 62 in.
Drag and drop number tiles into the boxes to show the median, first quartile (Q1) and third quartile (Q3)
of the data on the dot plot.
Answer:
Median = 5
Q1 = 2
Q3 = 10
Step-by-step explanation:
✔️On the dot plot, each dot represents a data point.
The median is the middle data point which is the 6th data point on the dot plot.
This:
Median = 5 (6th data point)
✔️Q1 is the middle value of the lower set of data points before the median = the 3rd data point
The 3rd data point is 2
Therefore,
Q1 = 2
✔️Q3 is the middle value of the upper set of data points after the median = the 9th data point.
The 9th data point = 10
Therefore,
Q3 = 10
Answer:9
Step-by-step explanation:
solve the equation
t^3=-343
Answer:
7
Step-by-step explanation:
t^3=7^3
t=7^3-^3
t=7
Please mark me as brainliest
Answer:
t = -7
Step-by-step explanation:
if you multiply -7 by -7, you get 49. Now if you multiply 49 times -7 you get -343
I have a box that is 5 inches wide 2 inches deep and 4 inches tall I want to fill with sand. how much sand can I fit inside the box?
Answer:
40
Step-by-step explanation:
5x2 is 10 and 10x4=40
can u help me with this
Answer:
1/500 = 0.002, 2 and 6/10 = 2.6, 3 and 2/25 = 308%, 0.0025 = 25%
Step-by-step explanation:
Someone please help me, I can't figure this out. I already asked this but I got a file. Please no files, I'm begging, I just want my math answers. Thank you,
(Look in image for question)
(Measurements are 4cm, 10cm, 5cm, 6cm, and 5cm).
Answer:
I believe the volume is 120 and the surface area is 124
Step-by-step explanation:
HELP WILL GIVE BRANLIEST!!
Answer:
the answer is the first option
Solve for angle x help plz
Answer:
123 degrees
Step-by-step explanation:
Answer:
123°
Step-by-step explanation:
360 - 114 - 43 - 80 = 123
The country of Freedonia has decided to reduce its carbon dioxide emission by 3 5 %every year. This year the
country issued 40 million tons of carbon dioxide.
Answer:
Brainliest?
Step-by-step explanation:
The amount after t years 40 millions tons
Bit by bit clarification:
Given as :
The pace of abatement of carbon dioxide one another = 35%
The amount of carbon dioxide radiated for this present year = 40 million tons
Let the amount of carbon dioxide discharged after t year = A millions tons
Presently, According to address
The amount of carbon dioxide radiated after t year = The amount of carbon dioxide discharged for this present year ×
Or on the other hand, A millions tons = 40 millions tons ×
Or on the other hand, A millions tons = 40 millions tons ×
Or on the other hand, A millions tons = 40 millions tons ×
Or on the other hand, A millions tons = 40 millions tons ×
So,The amount after t years = A = 40 millions tons
Consequently The amount after t years 40 million
Primalia knows there are 3 feet in 1 yard. She writes the equation 3= to find the number of yards, , in any number of feet, .
Use the drop-down menus to complete the statements about Primalia's equation.
The word choices for the first part is "greater than" or "less than".
The word choices for the second part is "greater than" or "less than"
The word choices for the third part is "will" or "will not"
The word choices for the fourth part is "3 x f = y", "3 + f = y", "3 x y = f", or "3 + y = f"
Answer:
Step-by-step explanation:
1. Greater than
2. Greater than
3. will
4. 3 × f = y
Photo used to help with the question is below!! Please answer! Will mark BRAINLIEST!
⬇⬇⬇⬇⬇⬇⬇
Find the measure of AGF.
Answer:
angle AGF = 55
Step-by-step explanation:
Assumed that this would be a perpendicular because of the 90 degree mark. So did 90 - 35 = 55
need to solve
7y+32;y=9
Answer:
95
Step-by-step explanation:
Have a great day
geometry question help
Answer:
m<BCD is 62 degrees
Step-by-step explanation:
From the diagram given, both triangles are similar triangles and triangle CAB is isosceles in nature;
Hence;
m<CAB = m<CBA
Also
m<CAB + m<CBA = m<BCD
31 + 31 = m<BCD
Swap
m<BCD = 31 + 31
m<BCD = 62 degrees
hence the measure of m<BCD is 62 degrees
Please help I’ll mark you brainliest if correct!
Answer:
89.5
Step-by-step explanation:
Answer:
89.5
................................
Ravi has ridden 44 miles of a bike course. The course is 55 miles long. What percentage of the course has Ravi ridden so far?
Answer:
80%
Step-by-step explanation:
To find the percent that he has ridden, divide the number of miles he has ridden by the total length of the course
44/55
= 0.8
So, Ravi has ridden 80% of the course
Answer:
80%
Step-by-step explanation:
There are 55 miles 1/5=11 miles so 44 miles=4/5
4/5=80%
Check all that are equivalent to 3(-4a + 5)
A
-12a
B
-12a + 15
C
-12a - -15
D
12a + 15
Answer:
B.) -12a+15
Step-by-step explanation:
Two hundred Dickinson parents were surveyed; 25% prefer year-round school. What fraction represents the number of parents who prefer year-round school?
GIVING EVERYTHING IF CORRECT. NO MORE LINKS.
I think the answer is C
I need some help with this,and have this done correctly for brainliest.
#5 = 1
Because you have to find x of (-3) and then you find 1.
#6 = 1
The vertical line doesn't represent a function but horizontal line if passed once represents the function.
#7 = 4
You can just plug in the x values into the equation and solve for y and math the answer to the y data.
1) Choice 1, is the correct answer because -3 on the x-axis touches the graph at 6 on the y-axis.
2) Choice 2, is the correct answer. It doesn't pass the horizontal line because it passes through more than one line on the graph. However, it does pass the vertical line test, which only passes through one line and makes this graph a function.
3) Choice 4, is the correct answer. If you use an online graphing tool, you can match up the points on one of these tables. Choice 4 only seems to fit all on these into f(x) = -2x + 6 equation.
Hope this helps :)
An expression is shown below:
2x3y + 8xy − 4x2y − 16y
Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)
Part B: Factor the entire expression completely. Show the steps of your work. (6 points)
Plz help, give good answer and get brainlest!!
Answer:
2y is greatest common factor
Add and subtract the second term to the expression and factor by grouping.
2y(x−2)(x2+4) is the factor
Step-by-step explanation:
Answer:
Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)
answer:
2y(x³+4x-2x²-8)
Part B: Factor the entire expression completely. Show the steps of your work. (6 points)
answer:
2y(x³+4x-2x²-8)
2y(x³-2x²+4x-8)
2y(x²(x-2)+4(x-2))
2y(x²+4)(x-2)
find the distance between the points (-4,5), (-12,5)
Answer:
d = 8
Step-by-step explanation:
For:
(X1, Y1) = (-4, 5)
(X2, Y2) = (-12, 5)
Distance Equation Solution:
d=(−12−(−4))2+(5−5)2−−−−−−−−−−−−−−−−−−−−√
d=(−8)2+(0)2−−−−−−−−−−√
d=64+0−−−−−√
d=6–√4
d=8
Therefore, the distance between (-4,5), (-12,5) is 8.
315 points)
What is the slope of a line parallel to y =-1/2x+6
A) 1/2
B) 2
C) -1/2
D) -2
Answer:
The slope is -1/2
Step-by-step explanation:
The Y-intercept is (0,6)
Find the circumference and area of a circle whose diameter is 14cm
Answer:
C≈43.98cm
Step-by-step explanation:
Hhhhhhhhhhhhhhhhhhh
Answer:
Step-by-step explanation:
hello :
the circumference ix : P= 2 pi ×r r : ridus r = diameter/2 = 7 cm
P= 2×3.14×7=43.96 cm
Find the area of the shaded region in the figure below, if the radius of the outer circle is 8 and the radius of the inner circle is 4. Keep your answer in terms of π.
Answer:
48 π
Step-by-step explanation:
Area of Circle =πr∧2
Big Circle Area = π(8)∧2 = 64π
Small Circle Area =π(4)∧2= 16π
Shaded Region = 64π - 16π = 48π
A scientist is studying snakes in the tropical rainforest. She surveys a 1 square mile area. She collects the following data:
Based on the evidence provided, what is the most likely explanation for the red snake population size? (SC.5.N.1.1)
The red snakes are not well hidden, so they are eaten by predators often.
The green snakes and the red snakes are in competition for the same food.
The black snakes prey upon the red snakes during certain times of the year.
The red snakes have been killed off by the poisons they produce.
Answer:
its c
Step-by-step explanation:
i took the test and got 100 percent
Find the equation for the following parabola. Vertex 0,0. Focus 2,0.
Answer:
8x
Step-by-step explanation:
Answer:
Hi there! The equation for this parabola is y^2=8x.
Press the button without the slightest hesitation! :)
Step-by-step explanation:
Correct for Acellus! :)
What number is ten more than 100? Write an equation.
Answer:
10+100=110
Step-by-step explanation:
easy as pie
Answer:
110?
Step-by-step explanation:
If its 10 more (more being addition) than 100 then it should be 110
3. What type of sequence is this?
0,2,5,9,14,...
Arthimetic
Geometric
Neither
Neither is the correct answer