Answer: 8 45 degree angles
Step-by-step explanation:
A circle is 360 degress. 360 divided by 45 equals 8
Answer:
8
Step-by-step explanation:
a circle is 360°. to find how many 45° angles it would take to turn in a complete circle:
360°/45°=8
it would take 8 45° angles to turn in a complete circle
what is 2+ -7+ -12+ -49+1050
Answer:
69
Step-by-step explanation:
that is what it is
Answer:
The answer should be 984
Step-by-step explanation:
A 1000-liter tank contains 40 liters of a 25% brine solution. You add x liters of a 75% brine solution to the tank. (a) Show that the concentration C (the ratio of brine to the total solution) of the final mixture is given by 3x + 40 C = 4(x + 40) We know that Total volume of brine (in liters) 0.25(40) + Total volume of solution (in liters) X Hence, h 0.25(40) + C = 10 + 40 + 3x = (b) Determine the domain of the function based on the physical constraints of the problem. (Enter your answer using interval notation.) (c) Use a graphing utility to graph the function. As the tank is filled, what happens to the rate at which the concentration of brine is increa O The rate slows down. O The rate speeds up. O The rate remains constant. What percent does the concentration of brine appear to approach?
a) 3x + 40C = 4(x + 40)
b) The domain is x >= 0.
c) This expression approaches 60/13, or approximately 46.2%.
(a) We know that the amount of brine in the final mixture is the sum of
the amount of brine in the initial solution and the amount of brine added,
and the total volume of the final mixture is the sum of the initial volume
and the volume added. Therefore,
Amount of brine in final mixture = 0.25(40) + 0.75x
Total volume of final mixture = 40 + x
The concentration of brine in the final mixture is the ratio of the amount
of brine to the total volume of the final mixture. Therefore,
C = (0.25(40) + 0.75x)/(40 + x)
Multiplying numerator and denominator by 4, we get:
4C = (40 + 3x)/ (40 + x)
Simplifying and rearranging, we get:
3x + 40C = 4(x + 40)
(b) The domain of the function is the set of all possible values of x that
make physical sense. Since we cannot add a negative volume of the
75% brine solution, the domain is x >= 0.
(c) The graph of the function is shown below. As the tank is filled, the
rate at which the concentration of brine increases slows down.
As x approaches infinity, the concentration of brine approaches 60%. To
see this, note that as x gets very large, the additional volume of the 75%
brine solution becomes negligible compared to the initial volume of the
tank.
Therefore, the concentration of brine approaches the concentration of
the initial solution, which is 0.25(40)/1000 = 1/25 = 0.04, or 4%. However,
as x approaches infinity, the concentration of brine approaches the
concentration of the 75% brine solution, which is 0.75.
Therefore, the concentration of brine appears to approach the weighted
average of these two concentrations, which is:
0.04(1 - 3x/(40 + 3x)) + 0.75(3x/(40 + 3x))
Simplifying, we get:
(30x + 1600)/(40 + 3x)
As x approaches infinity, this expression approaches 60/13, or
approximately 46.2%.
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Anyone know how to do these?
Answer:
x = 7
Step-by-step explanation:
These are alternate interior angles. The rule for this type of angles is that they are equal to each other. Hence, you would do the following:
2x+5 = 3x-2 (Add 2 to each side)
2x+7 = 3x (Subtract 2x from each side)
7 = x ; x = 7
I hope this helps :D
Mia crosses a river when she drives from her house to the beach. The function d(t)=40|t-1. 25| shows Mia's distance from the river, d, in miles after t hours. The domain of the function is 0
The domain of the function is given as 0<t<3, which means that the time elapsed is between 0 and 3 hours. Mia's distance from the river after 2 hours of driving is 30 miles.
The given function is:
d(t) = 40|t-1.25|
Here, t represents the time elapsed in hours and d represents the distance from the river in miles.
To find Mia's distance from the river, we need to plug in values of t into the function.
For example, if t=2, then:
d(2) = 40|2-1.25|
d(2) = 40|0.75|
d(2) = 30
So Mia's distance from the river after 2 hours of driving is 30 miles.
Similarly, we can find Mia's distance from the river at other points in time.
To graph the function, we can plot points by choosing different values of t and finding the corresponding values of d. We can then connect these points to get a graph of the function.
Graph of the function d(t) = 40|t-1.25|
The graph shows that Mia starts at a distance of 40 miles from the river and then approaches it until she reaches the other side of the river, where her distance from the river is again 40 miles. The graph is symmetric about t=1.25, which means that Mia spends the same amount of time on either side of the river.
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Find the slope of the line that passes through (99, -12) and (98, 57). How do I do this step by step
Answer:
-69. Nice!
Step-by-step explanation:
The slope of a line between two points is defined as the ration between the vertical distance and the horizontal distance - note that it doesn't matter if you go from the first to the second point, or the opposite, signs will end up fixed anyways. Let's get calculating!
\(\Delta y = -12 -57 = -69 \\ \Delta x = 99 - 98 = 1\)
Your slope is \(m = {\Delta y \over \Delta x}={-69 \over 1 } = -69\)
which two parts of the vehicle are most important in preventing traction loss
The tires and the traction control system work in tandem to ensure maximum traction and stability, minimizing the risk of traction loss and improving overall vehicle control and safety.
The two most important parts of a vehicle in preventing traction loss are the tires and the traction control system.
Tires: Tires are the primary point of contact between the vehicle and the road surface. The quality and condition of the tires greatly influence traction. Tires with good tread depth and appropriate tread pattern are essential for maintaining grip on the road. Tread depth helps to channel water, snow, or debris away from the tire, preventing hydroplaning or loss of traction. Additionally, tire pressure should be properly maintained to ensure even contact with the road. Choosing tires suitable for the specific driving conditions, such as all-season, winter, or performance tires, is crucial for optimal traction and handling.
Traction Control System: The traction control system is a vehicle safety feature that helps prevent the wheels from slipping or spinning on low-traction surfaces. It uses various sensors to monitor the speed and rotation of the wheels. If the system detects a loss of traction, it will automatically reduce engine power and apply braking force to the wheels that are slipping. By modulating power delivery and braking, the traction control system helps maintain traction and prevent wheel spin, especially in challenging conditions like slippery roads or during quick acceleration.
The tires and the traction control system work in tandem to ensure maximum traction and stability, minimizing the risk of traction loss and improving overall vehicle control and safety.
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I need help please
Which equation represents the graphed function?
N0.3)
O y = -2x + 3
O y = 2x + 3
y = -x + 3
(1.1)
-5-4-3-2-13
3 4 5
-2
y = x + 3
For each question below, determine True or False: If a simple random sample is chosen with replacement, each individual has
the same chance of selection on every draw.
The statement If a simple random sample is chosen with replacement, each individual has the same chance of selection on every draw is True.
If a simple random sample is chosen with replacement, it means that after each selection, the chosen individual is placed back into the population before the next selection is made. In this case, each individual in the population has the same chance of being selected for every draw.
The process of replacing the selected individual ensures that the selection probabilities remain constant throughout the sampling process. As a result, each individual has an equal probability of being chosen on each draw, making the statement true.
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A scuba diver is 20 feet below the surface of the water 14 seconds after he entered the water and 100 feet below the surface after 30 seconds. What is the scuba divers rate of change?
Answer:
1 foot = 0.7 secs
Step-by-step explanation:
14 seconds divided by 20 feet = 0.7 seconds per foot descended.
Hope this helps and good luck :)
Please help me I’m so confused!!!!!
Answer:
It was changing 5/7 per hour.
Step-by-step explanation:
subtract 5/7 from the price each hour.
9 - 15
10 - 14.28
11 - 15.57
12 - 12.85
1 - 12.14
2 - 11.42
3 - 10.71
4 - 10
mark brainlest pls
In a binomial situation, n=18 and π=0.60. Determine the expected
value
The expected value in a binomial situation with n = 18 and π = 0.60 is E(X) = np = 18 * 0.60 = 10.8.
In a binomial situation, the expected value, denoted as E(X), represents the average or mean outcome of a random variable X. It is calculated by multiplying the number of trials, denoted as n, by the probability of success for each trial, denoted as π.
In this case, we are given n = 18 and π = 0.60. To find the expected value, we multiply the number of trials, 18, by the probability of success, 0.60.
n = 18 (number of trials)
π = 0.60 (probability of success for each trial)
To find the expected value:
E(X) = np
Substitute the given values:
E(X) = 18 * 0.60
Calculate the expected value:
E(X) = 10.8
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Could I get some help please?
Please add an explanation if possible.
Answer:
\( \mathsf{P = 45,230 {(1 + 0.02)}^{t} }\)
Step-by-step explanation:
Since P is growing every year at the rate of 2%.
It's an case similar finding of compounds interest.
that why we are using the formula of compounds interest in this situation.
the following two-way table describes the preferences in movies and fast food restaurants for a random sample of 100 people. mcdonald's taco bell wendy's iron man 20 12 8 dispicable me 12 7 9 harry potter 6 14 12 what percent of the dispicable me lovers also like mcdonald's?
The percent of the dispicable me lovers also like mcdonald's is 71%.
Define the meaning of the term percent?Rather than being expressed as a fraction, a percentage is a piece of a whole represented as a number from 0 and 100. Nothing is zero percent; everything is 100 percent.As the question stated-
The percent of the dispicable me = 12 + 7 + 9 = 28%.
The number of mcdonald's lovers = 20%.
Thus, percent of the dispicable me lovers who also like mcdonald's;
= 20 /28
= 20/28
= 0.71
= 71%
Thus, the percent of the dispicable me lovers also like mcdonald's is 71%.
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What is 15/20 simplest form
Answer:
the simplest form of 15/20 is 3/4
can yall help me with this
Answer: B is the correct answer -23.801505
Step-by-step explanation: A, C, & D all have two negatives and when you multiply 2 negatives, you get a positive. B has 3 negatives which will give you a negative answer.
Question 2 Consider the following set of vectors, where c is a scalar. A = {(2,2,0),(1,2,c),(0,0,c),(1,0,0)} a) (1pt) Explain why A is linearly dependent for any value of c. b) (2pts) For c = 0, give a geometric description of Vect (A). c) (2pts) Find all the values of c for which (4,1,3) is in Vect (A).
c = 3.
a) A is linearly dependent for any value of c because the vectors are not linearly independent.
This means that one of the vectors can be written as a linear combination of the others.
For example, the vector (1,2,c) can be written as (2,2,0) + (-1,0,c-0) = (1,2,c).
This means that the set of vectors is linearly dependent.
b) For c = 0, Vector (A) is the set of all linear combinations of the vectors (2,2,0), (1,2,0), (0,0,0), and (1,0,0).
This means that Vect (A) is the set of all points in the xy-plane, or the set of all vectors in R^2.c).
To find all the values of c for which (4,1,3) is in Vect (A),
we need to solve the equation (4,1,3) = a(2,2,0) + b(1,2,c) + d(0,0,c) + e(1,0,0) for the scalars a, b, d, and e.
This gives us the system of equations:4 = 2a + b + e1 = 2a + 2b3 = bc + dc.
Solving this system of equations gives us the values of a, b, d, and e in terms of c.
We can then use these values to find the values of c for which (4,1,3) is in Vect (A).
After solving the system of equations, we find that c = 3 and a = 1, b = -1, d = 0, and e = 2.
Therefore, the value of c for which (4,1,3) is in Vect (A) is c = 3.
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In which quadrant would the point (3.6, - 4 2/3) be located?
Answer:
3 because of the negative relations
Answer:
Quadrant 4
Hope this works! :)
im struggling and need help fast please show work and tell me how to do it. no links
-22.8 = 6n check your solution
Answer:
-3.8=n
Step-by-step explanation:
My goal is to get n all by itself, but its multiplied by 6. If I do the inverse operation (which is division) on both sides I will get -22.8/6=n. Now I can just simply combine the like terms and finalize my answer. 6 * 3=18 but -22.8 is a decimal number so my answer will range from around 3.5-3.9. if I divide -22.8/6 I get -3.8. My final answer is n=-3.8
Can somebody help me on this?
Answer:
Step-by-step explanation:
ok, it might be EF=EH since it's in the same spot as EFG~EHG
I'm sorry if I'm wrong
Allison measured a line to be 5.4 inches long. If the actual length of the line is 5.5 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?
Answer:
1.85%
Step-by-step explanation:
→ Find the difference between the actual and predicted
5.5 - 5.4 = 0.1
→ Divide answer by 5.4
0.1 ÷ 5.4 = 0.01851851851
→ Multiply answer by 100
0.01851851851 × 100 = 1.85%
PLEASE HELP ITS A FINALE IF YOUR WRITE I GIVE YOU BRAINLIEST
Answer:
Answer is B.
Step-by-step explanation:
-2x (4x+5)
-8x^2 - 10x
Hippoty Hoppity, distributive property.
Multiply -2x by 4x, both have X's, so you combine them to get x^2 (X squared).
Hope this helped. Good luck on your finals.
for geometry:(
please help, will give brainist:)
Answer:
yeet y,njsjdhdhdhddjhrr
answer; #13,#14,#15. ((PLEASE HELP ME)). ((due today)).
The domain and range of f(x) = -24 are given as follows:
Domain: all real values.Range: {-24.}The domain and range of f(x) = 0.5(x + 4)² - 11 are given as follows:
Domain: all real values.Range: f(x) >= -11.The range of y = -2x² + 12x - 13 is given as follows:
y <= 5.
How to obtain the domain and the range of a function?The domain of a function is the set that contains all the input values that can be assumed by the function.
As neither of the functions in this problem have any restriction, the domain is all real values for the two of them.
The range of a function is the set that contains all the output values that can be assumed by the function.
The ranges are given as follows:
Constant function: single constant, hence the {}.Quadratic functions: negative infinity to vertex (concave down) and vertex to positive infinity (concave up).More can be learned about the domain and the range of a function at https://brainly.com/question/30248800
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The table shows the amount of snow, in cm, that fell each day for 30 days. Amount of snow (s cm) Frequency 0 s < 10 8 10 s < 20 10 20 s < 30 7 30 s < 40 2 40 s < 50 3 Work out an estimate for the mean amount of snow per day
The mean amount of snow per day is equal to 19 cm snow per day.
How to calculate the mean for the set of data?In Mathematics and Geometry, the mean for this set of data can be calculated by using the following formula:
Mean = [F(x)]/n
For the total amount of snow based on the frequency, we have;
Total amount of snow (s cm), F(x) = 5(8) + 15(10) + 25(7) + 35(2) + 45(3)
Total amount of snow (s cm), F(x) = 40 + 150 + 175 + 70 + 135
Total amount of snow (s cm), F(x) = 570
Now, we can calculate the mean amount of snow as follows;
Mean = 570/30
Mean = 19 cm snow per day.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
if a number is a natural number, then it is also a whole number inverse
Answer:
I believe you're learning geometry. Anyways, here are examples of natural numbers: 1, 2, 3... Meanwhile, here are examples of whole numbers: 0, 1, 2, 3... Natural numbers are all the positive whole numbers. Whole numbers are quantities that are both positive and neutral, and don't include any fractions or decimals.
Step-by-step explanation:
In a circle with radius 4.5, an angle measuring 1 radians intercepts an arc. Find the length of the arc to the nearest 10th.
The length of the arc is approximately 4.5 to the nearest 10th.
How to solve for the length of the arcTo find the length of the arc intercepted by an angle in a circle, we can use the formula:
Arc length = radius × angle (in radians)
In this case, the radius is 4.5, and the angle is 1 radian. So, we can calculate the arc length as follows:
Arc length = 4.5 × 1 ≈ 4.5
Therefore, the length of the arc is approximately 4.5 to the nearest 10th.
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Complete the statement to describe the expression (a+b+c)(d+e+f)
The expression consists of _ factors, and each factor contains _ terms.
Fill in the blanks.
Answer:
Please check the explanation.
Step-by-step explanation:
We know that if we multiply 3 and 4, we get 12.
In other words, 3 × 4 = 12
Thus, 3 and 4 are factors of 12.
now
Given the expression
\((a+b+c)(d+e+f)\)
The given expression consists of two factors which are:
(a+b+c)(d+e+f)We also know that an expression can consist of terms, a term may be a constant or a variable. It can be both as well.
For example, in the expression, 4b + 2, 4b and 2 are terms.
so,
The factor (a+b+c) consists of 3 terms. These terms are a, b and c.Similarly, the factor (d+e+f) consists of 3 terms. These terms are d, e, and f.If 2(x+5) = k and k= 4, what is the value of x?
Step-by-step explanation:
-3 is the answer of ur question may it help u
Answer:
A
Step-by-step explanation:
2(x+5) = k
1. Open parenthesis
2(x+5) = 2x + 10
Given that k = 4, substitute
2. Substitute k
2x + 10 = 4
3. Solve
2x = -6
x = -3
The answer is -3, which is A.
Hope this helps :)
Have a great day!
can someone answer this correctly pls
Answer:
i = 45% and ii = 47% (Rounded)
Step-by-step explanation:
Simply divide 27 by 60 to get i:
27/60=.45
Convert to a percent chance.
.45=45%
Then divide 395 by 840 to get ii:
395/840=.47
Convert to a percent chance.
.47=47%
4+2(17-12)
PLEASE SIMPLIFY