Answer: 35%
Step-by-step explanation:
How do you do this question?
Answer:
The answer is D) 12
There are two trips, but the distances are the same.
Trip #1: uphill, at 9 mph
Trip #2: downhill at 18 mph
Total round trip is 30 minutes.
Since he's going half the speed uphill, Trip #1 takes twice as long as Trip #2.
So if the time for Trip #2 is x, then the time for Trip #1 is 2x.
x + 2x = 30, so x=10
Trip #2 takes 10 minutes.
Trip #1 takes 20 minutes.
Trip #1: 20 minutes at 9 mph = 3 miles
Trip #2: 10 minutes at 18 mph = 3 miles
This means his school is 3 miles away.
If you want an equation to solve,
Let d = distance to school. We use d = r·t formula to set up that t = d/r
let t1 = time going to school and t2 = times going home
t1 + t2 = 30 and t1 = d/9 and t2 = d/18.
d/9 + d/18 = 0.5 (it's 0.5, because we need the time in hours)
mutiply both sides b 18
2d + d = 9
3d = 9
d = 3
PLEASE HELP ASAP!!!!!
Answer:
D. 30
Step-by-step explanation:
60 = 2x
30 = x
C-Scenario 3
Your school wants to implement an Al system at sporting events that classifies fans and directs them to
either the home or away side of the stadium.
Answer:
In this scenario, the school wants to use an AI system to classify fans at sporting events and direct them to either the home or away side of the stadium. This system could potentially use various AI technologies, such as image recognition, facial recognition, or even crowd analysis, to determine the affiliation of the fans and direct them to the appropriate side. This could help to improve the overall experience of the fans by reducing congestion and ensuring that they are able to sit with other fans that share their loyalty. However, it is important to note that implementing such a system also raises privacy and ethical concerns, such as the potential for bias or misuse of personal data. It is important for the school to carefully consider these issues before implementing such a system.
A child has three bags of fruits in which Bag 1 has 5 apples and 3 oranges, Bag 2 has 4 apples and 5 oranges, and Bag 3 has 2 apples and 3 oranges. One fruit is drawn at random from one of the bags. Calculate the probability that the chosen fruit was an orange and was drawn from Bag 2
The probability that the chosen fruit was an orange and was drawn from Bag 2 is approximately 0.269 or 26.9%.
There are three bags of fruits with different numbers of apples and oranges in each bag. We need to calculate the probability that the fruit drawn is an orange and was drawn from Bag 2.
We can use Bayes' theorem to find the conditional probability of an event, given that another event has already occurred. Let O be the event that an orange is drawn and B2 be the event that the fruit is drawn from Bag 2.
Using Bayes' theorem, we have:
P(B2|O) = P(O|B2) * P(B2) / P(O)
We need to calculate P(O|B2), P(B2), and P(O) to find P(B2|O).
P(O|B2) is the probability that an orange is drawn given that the fruit is drawn from Bag 2. This can be calculated as:
P(O|B2) = Number of oranges in Bag 2 / Total number of fruits in Bag 2
= 5 / (4 + 5)
= 5/9
P(B2) is the probability that the fruit is drawn from Bag 2, without any information about the color of the fruit. As all three bags are equally likely to be chosen, we have:
P(B2) = 1/3
P(O) is the probability that an orange is drawn, without any information about the bag it was drawn from. This can be calculated as the weighted average of the probability of drawing an orange from each bag, using the probabilities of choosing each bag. We have:
P(O) = P(O|B1) * P(B1) + P(O|B2) * P(B2) + P(O|B3) * P(B3)
= (3/8) * (1/3) + (5/9) * (1/3) + (3/5) * (1/3)
= 31/135
Substituting the calculated values into Bayes' theorem, we get:
P(B2|O) = P(O|B2) * P(B2) / P(O)
= (5/9) * (1/3) / (31/135)
= 25/93
≈ 0.269
Therefore, the probability that the chosen fruit was an orange and was drawn from Bag 2 is approximately 0.269 or 26.9%.
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A line with a slope of –1/4 passes through the point (–6,5). What is its equation in point-slope form?
The point- slope form of the line is y-5 = -0.25(x+6).
What is line?
A line is an one-dimensional figure. It has length but no width. A line can be made of a set of points which is extended in opposite directions to infinity. There are straight line, horizontal, vertical lines or may be parallel lines perpendicular lines etc.
A line with a slope of –1/4 passes through the point (–6,5)
Any line in point - slope form can be written as
y - y₁= m(x -x₁) -------(1)
where,
y= y coordinate of second point
y₁ = y coordinate of first point
m= slope of the line
x= x coordinate of second point
x₁ = x coordinate of first point
In the given problem (x₁ , y₁) = (-6,5) and m= -1/4
Putting all these values in equation (1) we get,
y-5= (-1/4) (x- (-6))
⇒ y-5 = -0.25(x+6)
Hence, the point- slope form of the line is y-5 = -0.25(x+6).
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Find the area of the figure to the nearest thousandth
Answer:
Total Area = 236.715 sq ft
Step-by-step explanation:
this is a composite figure made up of a circle and a rectangle; find the area of each and then add them together
A(circle) = πr²
= π(7.5²)
= 176.715
A(rectangle) = 15(4) which is 60
Total Area = 236.715 sq ft
Consider the expressions 12 + 4y and 4( y + 3 )what is the value of each expression when y = 5
not files pls
Answer:
Both expressions equals to 32.
Step-by-step explanation:
You just plug in 5 for each expression: 12+4(5)=32, 4(5+3)=32.
Plssssssssssssss help me it’s due tomorrow I really need help I will mark brainliest!!!
Answer:
∠BAD = 100°
∠ADC = 105°
∠DCB = 50°
∠ABC = 105°
Step-by-step explanation:
∠BAD is given.
∠ADC is supplementary to the 75°, so it is 180-75 = 105°
∠DCB is 50° just like its opposite angle
The sum of all angles in a quadrilateral must be 360, so ∠ABC = 360-100-105-50 = 105.
Which rule explains why these triangles are congruent?
AAS
SAS
ASA
These triangles cannot be
proven congruent
Answer: SAS
Step-by-step explanation: by using the reflective property the line in the center it’s the missing “S”
9. How many ways can 6 different items be arranged in a line and how many ways can 6 different items be arranged in a circle? 1
Find the area of triangle XYZ if length XY equals 7 and length XZ equals 4.3. You also
know that angle Y equals 79°.
Answer:
A ≈ 14.8 units²
Step-by-step explanation:
the area (A) of the triangle is calculated as
A = \(\frac{1}{2}\) yz sin Y ( that is 2 sides and the angle between them )
where x is the side opposite ∠ X and z the side opposite ∠ Z
here y = XZ = 4.3 and z = XY = 7 , then
A = \(\frac{1}{2}\) × 4.3 × 7 × sin79°
= 15.05 × sin79°
≈ 14.8 units² ( to 1 decimal place )
Nia increased her class average by 3%. She now has a 92% in her math class.
Nia's original class average was 89%. After increasing it by 3%, she now has a 92% in her math class.
1. Let's assume Nia's original class average was X.
2. She increased her class average by 3%, which can be represented as X + (3/100)X.
3. According to the question, X + (3/100)X = 92.
4. Simplifying the equation, we have (103/100)X = 92.
5. To find X, we divide both sides of the equation by (103/100): X = (92 * 100) / 103.
6. Calculating the value, X ≈ 89.32.
7. Therefore, Nia's original class average was approximately 89.32%.
8. After increasing it by 3%, her new class average is 89.32% + (3/100) * 89.32% ≈ 92%.
Note: The values have been rounded for simplicity.
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Can y’all help me with this?
Answer:
BBBBB
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Francis deposited $9,600 into an investment account earning 6% compounded monthly (j12). How much will he have in the account after 6.0 years?
After 6.0 years, with a monthly compounding interest rate of 6% on a $9,600 deposit, Francis will have approximately $13,467.34 in his investment account.
To calculate the future value of Francis' investment, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = the future value of the investment
P = the principal amount (initial deposit)
r = the annual interest rate (6% or 0.06 in decimal form)
n = the number of times interest is compounded per year (12, since it's compounded monthly)
t = the number of years (6.0)
Plugging in the values, we get:
A = $9,600(1 + 0.06/12)^(12 * 6.0)
A = $9,600(1 + 0.005)^(72)
A ≈ $13,467.34
Therefore, after 6.0 years, Francis will have approximately $13,467.34 in his investment account. This means his initial deposit of $9,600 has grown by the compounded interest over time. It's important to note that the actual amount may vary slightly due to rounding.
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What is the slope of the line passing through the points
(-7, -6) and (5, -9)?
A -4
B-1/4
C 0
D undefined
CAN SOMEONE HELP ME FIND THE SURFACE AREA
Answer:
Step-by-step explanation:
this is hardddddddddd i think
Answer: 7x² - 14x
Steps: 7(-2x + x²)
Apply the distributive law [ a(b + c) = ab + ac ]: 7(-2x) + 7x²
Apply negative/positive rules: -7 × 2x + 7x²
Simplify: 7x² - 14x
BRAINLIEST
Three functions are shown in the table on the left. Complete the sentences comparing the three functions.
___ has the greatest maximum (f(x), g(x), h(x))
___ has the lowest minimum (f(x), g(x), h(x))
___ has/have both x- and y-intercepts (h(x), f(x) and g(x), f(x), g(x), h(x))
Answer:
h(x)
h(x)
f(x) g(x) h(x)
Step-by-step explanation:
Edge 2020
~theLocoCoco
h(x) , h(x) , and f(x) g(x) h(x)
What is the equation of the line?
A: y = -4/5x + 3/2
B: y = -5/4x + 5/4
C: y = -4/5x + 5/4
D: y = -5/4x + 3/2
Answer:
A: y = -4/5x + 3/2 i believe is the correct answer
Step-by-step explanation:
listed below are the number of tech-supported questions successfully answered each day by misty and brock over a one week period, who is the more consistent employee?
Misty: 11,13,12,14,10,16,14
Brock: 8,15,10,11,16,10,9
Answer:
Misty is the more consistent employee
Step-by-step explanation:
The given data are
Misty: 11, 13, 12, 14, 10, 16, 14
Brock: 8, 15, 10, 11, 16, 10, 9
The mean of Misty's successfully answered questions = ∑x/n = 90/7 = 12.86
Misty's data standard deviation = √(∑(x - μ)²/n) = 1.884
The mean of Brock's successfully answered questions = ∑x/n = 79/7 = 11.29
Brock's data standard deviation = √(∑(x - μ)²/n) = 2.81
Therefore, based on the value of the standard deviation which is a measure of variability, whereby the standard deviation of Brock's number of successfully answered questions is larger than the standard deviation of Misty's number of tech supported successfully answered questions, Misty is the more consistent employee.
Jane received a $50.00 gift card for a photo center. She used it to buy prints that cost 15 cents each. The remaining balance, B (in dollars), on the card after buying x prints is given by the following. $50.00- 0.15x what is the remaining balance on the card if Jane bought 20 prints?
PLEASE HELP
Calculate the total value of the investment given the following information and compounded continuously?
Principal $1000; rate 4.5%; term 10 years
Step-by-step explanation:
Continuous compounding formula :
FV = PV e^rt FV = future value PV = present value
r = decimal interest rate t = years
FV = 1000 e^(.045 * 10) = $ 1568.31
The measures of the angles of a triangle are shown in the figure below. Solve for x.
x=180°-(102°+43°)=180°-145°=35°
The quotient rule for logarithms states that _______. the logarithm of a quotient is the _______ of the logarithms.
The quotient rule for logarithms states that the log of the logarithm of a quotient is the difference of the logarithms.
What is logarithm?It should be noted that logarithm, is the exponent or power to which a base must be raised to get a given number.
We can apply the quotient rule to find the differentiation of a function.
In this case, the quotient rule for logarithms states that the log of the logarithm of a quotient is the difference of the logarithms.
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The football team is losing the game in the fourth quarter. There are still 6,700
fans in attendance but 2,500 fans have already left. What was the total
attendance at the game before the fans began to leave?
which are the graphs of sine functions (more than 1 answer)
For the very first graph of the sinx function,
\(\sin \frac{\Pi}{2}=1\)\(\sin \Pi=0.\)According to the coordinates obtained ,
The graph from the options which satisfied the sinx function are,
The graph of option A,C are satisfied the sin function .
Therefore the correct option is A , C.
A rocket travels 2200 km up in 2.2 hours. What is its average velocity?
Answer:
The distance is 816 km
Step-by-step explanation:
We can define average velocity as the quotient between the total distance traveled and the time it takes to travel that distance.
Here we will get the average velocity of 1,000 km/h.
----------------------------
To get the average velocity of the rocket, we need to know the distance that it travels and the time it needs to travel that distance.
We know that:
distance = 2,200 km.time = 2.2 hours.Then the average velocity is given by:
AV = (2,200 km)/(2.2 h) = 1,000 km/h.
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6) A paint store has 240 gallons of paint to pack into boxes. Each box can hold 4 gallons of
paint. Which of the following equations can be used to find the number of boxes the paint
store can pack?
Choose ALL the correct answers.
a) 240 =
b) 4x
÷
+4
= 240
_=240 +4
= 240
= 240 x 4
Answer: 347
Step-by-step explanation:
Which expression is a factor of 3y2 + 14 - 24
Determine the domain and range of the set.
{(1, 0), (–2, –3), (2, 1), (2, 0)}
a
D = {–2, 1, 2}; R = {–3, 0, 1}
b
D = {–2, 1, 2, 2}; R = {–3, 0, 0, 1}
c
D = {1, -2, 2, 2}; R = {0, –3, 1, 0}
d
D = {–3, 0, 1}; R = {–2, 1, 2}
Answer:
c
Step-by-step explanation:
all rhe domains listed