Answer:
153.86
Step-by-step explanation:
To find the area the equation is pi* radius squared
so it's 3.14*7 squared it's
3.14*49
The answer is 153.86
the measure of angle C
Answer:
75 degrees
Step-by-step explanation:
The two marks on the triangle sides mean they are the same length (congruent). Because of the Isosceles Triangle Theorem, the angles across from those two congruent sides are also congruent. That means that angle C also measures 3x. Because all the sides of a triangle add up to equal 180, then (x+5) + 3x + 3x = 180. 7x + 5 = 180, and 7x = 175. That means that x = 25. Take that 25 and sub it into 3x to get 3(25) = 75 degrees.
Select all that apply.
Which of the following statements best describes a characteristic of an observational study?
The researcher imposes, for example, a treatment on the sample population and then observes their response.
The researcher determines relationships among variables.
The individuals are observed the exact way they act in real life.
It is the best method to learn about cause-effect relationships.
Answer:
The individuals are observed the exact way they act in real life.
Step-by-step explanation:
There are two main types of studies in research; one is controlled or experimental and the other is observational.
In observational studies, the individuals participating in study are not manipulated or intervened or controlled in any way by the researcher.
Hence the statements best describes a characteristic of an observational study is the individuals are observed the exact way they act in real life !
Find the value of x shown in the isosceles triangle shown below
40 POINTS!!
Answer:
x = √41 units
Step-by-step explanation:
Half the base length
= 8 ÷ 2
= 4
x² = 4² + 5²
x² = 16 + 25
x² = 41
x = √41
Answer:
x = sqrt(41)
Step-by-step explanation:
We have a right triangle with height 5 and a base that is 1/2 of 8 = 4
We can use Pythagorean theorem
a^2 + b^2 = c^2 to find the length of the hypotenuse
5^2 + 4^2 = x^2
25+16 = x^2
41 = x^2
Take the square root of each side
sqrt(41) = x
What is the total amount for an investment of $1000 invested at 7.25% for 15 years and compound continuously?
Answer:
[tex]\$2,966.85[/tex]
Step-by-step explanation:
we know that
The formula to calculate continuously compounded interest is equal to
[tex]A=P(e)^{rt}[/tex]
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
e is the mathematical constant number
we have
[tex]t=15\ years\\ P=\$1,000\\ r=0.0725[/tex]
substitute in the formula above
[tex]A=\$1,000(e)^{0.0725*15}=\$2,966.85[/tex]
Final answer:
The total amount for a $1000 investment at 7.25% compounded continuously for 15 years is approximately $2972.70, demonstrating the power of compound interest.
Explanation:
To calculate the total amount from an investment that is compounded continuously, you use the formula for continuous compounding, which is A = Pert, where A is the amount of money accumulated after n years, including interest, P is the principal amount (the initial sum of money), r is the annual interest rate (decimal), t is the time the money is invested for, and e is the base of the natural logarithm, approximately equal to 2.71828.
Substituting our values into this formula we get:
A = 1000 * e0.0725*15
A ≈ 1000 * e1.0875
A ≈ 1000 * 2.9727
A ≈ $2972.70
This result shows us the power of compound interest and highlights starting to save money early in life as a key financial decision.
the lengths of two sides of a right triangle triangle are 3 and 5 what is the length of the hypotenuse
Answer:
√34
Step-by-step explanation:
3²+5²=9+25=34
√34=√34 because 34 cannot be simplified because no perfect square go into it
Can you guys help my with this problem? thanks.
Answer:
$3,750
Step-by-step explanation:
Find how much 3% of 125,000 is. Divide 3 by 100 and then multiply that by 125,000. You get 3,750, which is how much interest Moran will earn.
The frequency table below represents the 30 best batting averages for a semi-peo baseball league. Which range of batting averages was most common among the players?
Answer:
A. .350-.359
Step-by-step explanation:
It has the highest frequency of all the ranges (14).
Answer: [tex]0.350-0.359[/tex]
Step-by-step explanation:
From the given table, it can be seen that the largest frequency in the data table = 14
Thus, there are 4=14 players which have the common range.
The range corresponding to the frequency 14 = [tex]0.350-0.359[/tex]
Hence, the range of batting averages which was the most common among the players = [tex]0.350-0.359[/tex]
Write the explicit formula for the sequences
3,9,27,81,...
Answer:
Step-by-step explanation:
This is a geometric sequence. The general formula for any term is
t_n = a*r^(n-1)
t1 = 3
r = 3
t_n = 3* 3^(n - 1)
t_4 should be 81
t_4 = 3*3^(n - 1)
t_4 = 3*3^3
t_4 = 3 * 27
t_4 = 81
Answer:
an = 3 * (3)^ (n-1) or
an = 3^n
Step-by-step explanation:
To find the common ratio, take the second term and divide by the first term
9/3 = 3
To verify take the third term and divide by the second
27/9 =3
Since this is a geometric sequence, it is of the form
an = a1*r^(n-1) where a1 is the first term and r is the common ration
an = 3 * (3)^ (n-1)
Since the first term is the same as the term inside the parentheses, we can combine
an = 3^1 * 3 ^ (n-1)
= 3^ (1+n-1)
= 3^ (n)
which expressions are equivalent to 2-(-6+3)+4c
A..-8c+6
B.3(-4+2)+4c
c. None of the above
Answer:
c. none of the above
Step-by-step explanation:
(-6+3)= -3
2--3=2+3=5
5+4c cant add them since they arent like terms
final answer 5+4c and that option isnt here
What’s the rule of reflection
Answer:
[tex]\large\boxed{r_{y-axis}(x,\ y)\to(-x,\ y)}[/tex]
Step-by-step explanation:
[tex]L(-6,\ 2)\to L'(-(-6),\ 2)\to L(6,\ 2)\\\\M(-5,\ 4)\to M'(-(-5),\ 4)\to M'(5,\ 4)\\\\N(-3,\ 2)\to N'(-(-3),\ 2)\to N'(3,\ 2)\\\\\bold{Conclusion:}\\\\r_{y-axis}(x,\ y)\to(-x,\ y)[/tex]
The rule of reflection for the triangle is Ry ( x , y ) → ( -x , y )
What is Reflection?Reflection is a type of transformation that flips a shape along a line of reflection, also known as a mirror line, such that each point is at the same distance from the mirror line as its mirrored point. The line of reflection is the line that a figure is reflected over. If a point is on the line of reflection then the image is the same as the pre-image. Images are always congruent to pre-images.
The reflection of point (x, y) across the x-axis is (x, -y). When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the y-axis is (-x, y).
Given data ,
Let the triangle be represented as ΔMLN
Now , the coordinates of the triangle are
The coordinate of M = M ( -5 , 4 )
The coordinate of L = L ( -6 , 2 )
The coordinate of N = N ( -3 , 2 )
when the triangle is reflected across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse.
The reflection of point (x, y) across the y-axis is (-x, y).
So , the coordinate of M' = M' ( 5 , 4 )
The coordinate of L' = L' ( 6 , 2 )
The coordinate of N' = N' ( 3 , 2 )
Hence , the rule of reflection is Ry ( x , y ) → ( -x , y )
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More math help please im lazy ._.
there are no real square roots of 25,36
If the first term of a geometric sequence is positive, and r>1, then the sequnce increases?
Answer:
Yes, if the first term of a geometric sequence is positive and r > 1, then the sequence increases
Step-by-step explanation:
* Lets talk about the geometric sequence
- There is a constant ratio between each two consecutive numbers
- Ex:
# 5 , 10 , 20 , 40 , 80 , ………………………. (×2)
# 5000 , 1000 , 200 , 40 , …………………………(÷5)
* General term (nth term) of a Geometric sequence:
# U1 = a , U2 = ar , U3 = ar2 , U4 = ar3 , U5 = ar4
# Un = ar^n-1, where a is the first term , r is the constant ratio
between each two consecutive terms, and n is the position of
the number in the sequence
- V.I.N: The position of the number means the place of the
number like first , second , third , .......... so n must be positive integer
* Lets talk about the ratio r
- If r greater than 1 and a is positive, the sequence increases lets
take some different examples to explain that
# If the first term is 2 and the ratio between the consecutive
terms is 3/2, then the first four terms in the sequence are
∵ a = 2
∵ r = 3/2 ⇒ greater than 1
∴ First = a = 2
∴ Second = ar = 2 × 3/2 = 3
∴ Third = ar² = 2 × (3/2)² = 2 × 9/4 = 9/2 4.5
∴ Fourth = ar³ = 2 × (3/2)³ = 2 × 27/8 = 27/4 = 6.75
- From the answers the sequence increases
# If the first term is 1/2 and the ratio between the consecutive
terms is 4/3, then the first four terms in the sequence are
∵ a = 1/2
∵ r = 4/3 ⇒ greater than 1
∴ First = a = 1/2
∴ Second = ar = 1/2 × 4/3 = 2/3 ⇒ 2nd > 1st
∴ Third = ar² = 1/2 × (4/3)² = 2 × 16/9 = 8/9 ⇒ 3rd > 2nd
∴ Fourth = ar³ = 1/2 × (4/3)³ = 2 × 64/27 = 32/27 ⇒ 4th > 3rd
- From the answers the sequence increases
* Now we are sure if the first term of a geometric sequence is
positive and r > 1, then the sequence increases
Answer:
The given statement is TRUE.
Step-by-step explanation:
We are given that if the first term of a geometric sequence is positive, and r>1, then the sequence increases which is true.
If the first term of any geometric sequence is positive and its common ratio ( r ) is greater than 1 then the sequence will always increase.
[tex] a _ n = a r ^ n - 1 [/tex]
What is the value of a in the polynomial
Answer: a= 16
Step-by-step explanation:
We have the following expression:
[tex](y-4)(y^2 +4y +16)[/tex]
To find the value of the coefficient "a" you must use the distributive property to multiply the expression:
[tex](y-4)(y^2 +4y +16)[/tex]
until you transform it to the form:
[tex]y^3 +4y^2 +ay -4y^2 -ay-64[/tex]
Then we have
[tex](y-4)(y^2 +4y +16)\\\\(y^3 +4y^2 +16y -4y^2 -16y-64)\\\\[/tex]
Therefore the value of a in the polynomial is 16
Add 5 and 14, triple the sum and then add 4/5
Answer:
57 4/5
Step-by-step explanation:
Add 5 and 14
5+14 = 19
Triple the sum
3 * 19 = 57
The add 4/5
57 + 4/5
57 4/5
Solved + 3d = 6.
isolate the variable
You can sum like terms:
[tex]d+3d=4d[/tex]
The equation becomes
[tex]4d = 6[/tex]
Divide both sides by 4:
[tex]d=\dfrac{6}{4}=\dfrac{3}{2}[/tex]
The pilot on the flight that Morgan was on announced that they were flying at 30,360 feet. Was Morgan over 6 miles above the ground? Explain. Please show work.
so we are using some conversions here
so first convert 30,360ft=?miles
we are going to use
division like SBD
silly babies dancing an example ofc so it means small to big,divide so,
30,360ft÷5,280=5.75miles
5,280 is how many ft are in a mile.:)
so no,Morgan wasn't over 6 miles
To determine if Morgan was over 6 miles above the ground, we must convert the altitude from feet to miles by dividing by 5,280 (the number of feet in a mile). This computation shows us that Morgan was indeed over 6 miles high.
Explanation:Yes, Morgan was over 6 miles above the ground. In order to solve this problem, we need to know that 1 mile equals 5,280 feet. Thus, first, we have to convert the altitude in feet into miles. We do this by dividing the number of feet by the number of feet in a mile.
30,360 feet / 5,280 feet per mile = 5.75 miles
Hence, Morgan was indeed flying at an altitude greater than 6 miles above the ground.
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A baseball player has had 5 hits in the last 25 times at bat. Based on this information, how many times can the player be expected to get a hit in the next 35 times at bat ?
Answer:
7 times
Step-by-step explanation:
5 times 5 is 25 so 5 times 7 is 35 and thats the answer
Select the correct answer from each drop-down menu.
Square STQR is drawn on one side of right triangle TPQ.
The length of each side of the square is about __ units, and the length of its diagonal is about __ units.
Answer:
Part 1) The length of each side of the square is about 4.47 units
Part 2) The length of its diagonal is about 6.32 units
Step-by-step explanation:
Part 1)
Find the length of each side of the square
In the right triangle TPQ
Applying the Pythagoras Theorem
[tex]TQ^{2}=PQ^{2}-TP^{2}[/tex]
substitute the given values
[tex]TQ^{2}=6^{2}-4^{2}[/tex]
[tex]TQ^{2}=36-16[/tex]
[tex]TQ^{2}=20[/tex]
[tex]TQ=2\sqrt{5}\ units[/tex] -----> exact value
[tex]TQ=4.47\ units[/tex] -----> approximate value
Part 2)
Find the length of the diagonal of the square
Applying the Pythagoras Theorem
[tex]TR^{2}=TQ^{2}+QR^{2}[/tex]
we have
[tex]TQ=QR[/tex]
[tex]TQ=2\sqrt{5}\ units[/tex]
substitute
[tex]TR^{2}=(2\sqrt{5})^{2}+(2\sqrt{5})^{2}[/tex]
[tex]TR^{2}=40[/tex]
[tex]TR=2\sqrt{10}\ units[/tex] -----> exact value
[tex]TR=6.32\ units[/tex] ----> approximate value
Answer:
First box is 4.5 units and the second box is 6.3 units.
Step-by-step explanation: Correct Plato answer.
Evaluate. 5^2+7⋅3+4 plz help
Answer:
50
Step-by-step explanation:
first the power 5^2 = 25 then the multiply 7*3 = 21 and then the addition
25+21+4= 25+25 = 50
Hey there!
5^2 + 7 * 3 + 4
= 5 * 5 + 21 + 4
= 25 + 21 + 4
= 46 + 4
= 50
Therefore, your answer is: 50
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Sam wrote these four expressions .
1 . n + n + n + n + 2
2 . n + n + n + 2
3 . 4n + 2
4 . 2n + 2n + 2n
PART A- Which expressions are equivalent? Write your answer in the space provided .
PART B- Choose two of Sam’s expressions that are not equivalent . Explain how you know they are not equivalent . Write your answer in the space provided .
Part A) the first and the third answer are equivalent because.
n+n+n+n+2= 4n+2 which is the same as the third answer.
Part B) 2 and 4 are not equivalent because
2) n+n+n+2= 3n+2
4) 2n+2n+2n= 6n
as we can see they are not the same. Therefore they are not equivalent.
hope this helps
what decimal is equivalent to 45/100
Answer:
0.45
Step-by-step explanation:
Brainiest please!
Are these permutation or combination problems?
1. Suppose you need to choose a new combination for your combination lock. You have to choose three numbers, each different and between 0 and 40. How many combinations are there?
2. You want to construct a 3 digit number from the digits 4,6,8,9. How many possible numbers are there?
Answer: You just bought a new briefcase and need to pick a four digit combination out of 10 possible numbers for the lock. If order does matter how many possible lock combinations can you choose from?
Step-by-step explanation:
For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. Provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1,000 in this population who have tissue abnormalities.
Answer: 15.8 Women out of 1,000 have tissue abnormalities.
Step-by-step explanation:
It's pretty simple, all you need to do is set up a proportion with the variables you already have
63/3980 = x/1000
Do Cross products so
63000=3980x
Divide both sides by 3980 to get x by itself and you get 15.82914573 which reduced to 1 decimal is 15.8
Answer:
Answer is 16
Step-by-step explanation:
Given that for the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer.
From the given information, we find the proportion of women who took the drug and developed tissue abnormalities
Proportion p = [tex]\frac{63}{3980} =0.015829[/tex]
Assuming the same proportion continues constantly for any population, we find
the number of women out of 1,000 in this population who have tissue abnormalities, estimated = [tex]1000(0.015829)\\=15.829\\=16[/tex]
write the equation for the cosine function that has been compressed vertically by a factor of 2, stretched horizontally by a factor of 4, and shifted down one unit
Answer:
[tex]f(x)=\frac{1}{2}Cos(\frac{1}{4}x)-1[/tex]
Step-by-step explanation:
Consider the function f(x) = cos x. Noted below are the points of transformations of the cos function
The function f(x) = [tex]\frac{1}{a}[/tex] cos x is a vertical compression of the original by a factor of aThe function f(x) = cos [tex](\frac{1}{b}x)[/tex] is a horizontal stretch of the original function by a factor bThe function f(x) = cosx - c is the original function shifted down c unitsConsidering the points above, we can now write down the "transformed" cosine function's equation:
f(x) = [tex]\frac{1}{2}Cos(\frac{1}{4}x)-1[/tex]
Answer:
Hope this helps :)
Step-by-step explanation:
If g(x)= 4x^2-16 we’re shifted 9 units to the right and 1 down, what would the new equation be
a. h(x) = 4(x-9)^2-17
b. h(x) = 4(x-7)^2+16
c. h(x) = 4(x-17)^2-9
d. h(x) = 4(x+9)^2-17
Answer:
A
Step-by-step explanation:
A shift along the x-axis is the opposite in the graph than in the equation. Rather than the x-intercept(s) being negative if the equation is x - n, they become positive; likewise for the other way around. A is the only answer that follows this rule. However, the y-intercept is y = n, so if n is negative, y gets shifted down rather than up.
what is the area of this figure
Answer:
532 m²Step-by-step explanation:
We have a square with the side a = 18m and a triangle with the base
b = 18m + 8m = 26m and height h = 16m.
The formula of an area of a square:
[tex]A_{\square}=a^2[/tex]
The formula of an area of a triangle:
[tex]A_{\triangle}=\dfrac{bh}{2}[/tex]
Substitute:
[tex]A_{\square}=18^2=324\ m^2\\\\A_{\triangle=\dfrac{(26)(16)}{2}=(26)(8)=208\ m^2[/tex]
The area of figure:
[tex]A=A_{\square}+A_{\triangle}\\\\A=324\ m^2+208\ m^2=532\ m^2[/tex]
A cabin cruiser travels 48 miles upstream (against the current) and 48 miles downstream (with the current). The speed of the current is 4 miles per hour. Find the total time traveled if the cabin cruiser travels at 12 miles per hour in still water.
The answer is:
The total time traveled by the cabin cruiser is equal to 9 hours.
Why?To solve the problem, we need to write two equations using the given information about the travel upstream and downstream.
Then, we need to write two equations:
Let be "x" the speed of the cabin cruiser (12 mph in still water)
Let be "y" the speed of the current (4 mph).
So,
For the travel against the current (upstream), we have:
[tex](x-y)*t_{upstream}=48miles\\\\(x-y)*t_{upstream}=48miles\\\\(x-4mph)*t_{upstream}=48miles[/tex]
For the travel with the current (downstream), we have:
[tex](x+y)*t_{downstream}=48miles\\\\(x+y)*t_{downstream}=48miles\\\\(x+4mph)*t_{downstream}=48miles[/tex]
Also, we know from the statement that the speed of the cabin cruise traveling in still water is equal to 12mph.
So,
Calculating the time traveled upstream, we have:
[tex](x-4mph)*t_{upstream}=48miles(12mph-4mph)*t_{upstream}=48miles(8mph)*t_{upstream}=48milest_{upstream}=\frac{48miles}{8mph}=6hours[/tex]
Calculating the time traveled downstream, we have:
[tex](x+4mph)*t_{downstream}=48miles(12mph+4mph)*t_{downstream}=48miles(16mph)*t_{downstream}=48milest_{downstream}=\frac{48miles}{16mph}=3hours[/tex]
Now that we know the time traveled upstream and downstream, we need to calculate the total time traveled using the following equation:
[tex]TotalTime=t_{upstream}+t_{downstream}\\\\TotalTime=6hours+3hours=9hours[/tex]
Therefore we have that the total time traveled is equal to 9 hours.
Have a nice day!
A statistics student is doing a project for her class. She wants to make a prediction for the outcome of an upcoming national election. Since there are only two candidates, she decides that her question is "Which candidate do more people favor in the upcoming election?" She decides to randomly interview 100 students crossing the courtyard on campus about their preference. Is this sample good for drawing general conclusions about the results of the election?
Final answer:
Interpreting the preference of 100 college students on campus to predict an election result is unlikely to yield a representative sample of the national electorate. A more scientific poll requires a larger, random, and demographically diverse sample of the voting population.
Explanation:
The student's approach of interviewing 100 students on a college campus to predict the outcome of a national election may not provide a representative sample of the general voting population. A sample to make general predictions about national elections should reflect the demographics and political distribution of the entire nation, which is unlikely to be the case for a sample drawn solely from a college campus.
Furthermore, the sample may also suffer from selection bias if, for instance, those who choose to walk through the courtyard are not representative of the entire student body, let alone the country's electorate.
To conduct a more accurate and scientific poll, a larger and more diverse sample size would need to be chosen randomly from among all potential voters in the nation and it should include a mix of individuals with a history of voting and other demographic characteristics that align with the broader population.
Please help will give brainliest
What’s a brainliest sorry I can’t help
This relation is a function because a function [tex]f[/tex] from a set [tex]A[/tex] to a set [tex]B[/tex] is a relation that assigns to each element [tex]x[/tex] in the set [tex]A[/tex] exactly one element [tex]y[/tex] in the set [tex]B[/tex]. The set [tex]A[/tex] is the domain (also called the set of inputs) of the function and the set [tex]B[/tex] contains the range (also called the set of outputs). So we have that:
[tex]\left[\begin{array}{cc}x & y\\1 & 0\\2 & 4\\3 & 8\\4 & 12\end{array}\right][/tex]
We have plotted all the points below. As you can see, this is a linear function. Therefore, with two points we can get the equation, so:
[tex]The \ equation \ of \ the \ line \ with \ slope \ m \\ passing \ through \ the \ point \ (x_{1},y_{1}) \ is:\\ \\ y-y_{1}=m(x-x_{1}) \\ \\ \\ y-0=\frac{4-0}{2-1}(x-1) \\ \\ y=4(x-1) \\ \\ y=4x-4 \\ \\ \\ Where: \\ \\ (x_{1},y_{1})=(1,0) \\ \\ (x_{2},y_{2})=(2,4)[/tex]
Finally, the equation is:
[tex]\boxed{y=4x-4}[/tex]
20 pts!
what is the total volume of juice in a six-pack if each can is 6 inches tall and has a diameter of 3 inches?
42.39in^3 or 254.3in^3
PLEASE ANSWER WITH FULL DETAILS AND THE SOLUTION YOU MADE IN ORDER TO ANSWER!
If it was asking for one can you would put 42.41 because it is (pi)(1.5)^2(6)
But then you times it by 6 cans and you get 254.47inches cubed
The total volume of juice in a six-pack, with each can being 6 inches tall and having a diameter of 3 inches, is 254.34 cubic inches. This is calculated using the volume formula for a cylinder.
The question asks for the total volume of juice in a six-pack of cans, where each can is 6 inches tall and has a diameter of 3 inches. To find the volume of one can, we use the formula for the volume of a cylinder: V = πr^2h, where V is volume, r is radius, and h is height. First, we find the radius of the can by dividing the diameter by 2, which gives us 1.5 inches. The volume of one can is therefore calculated as V = π(1.5)^2(6), which simplifies to V = π(2.25)(6) = 42.39 cubic inches. To find the total volume for a six-pack, we multiply this volume by 6: 42.39 in^3 × 6 = 254.34 in^3. Therefore, the total volume of juice in the six-pack is 254.34 cubic inches.