Answer: -16/3
Step-by-step explanation:
-8 * 2/3
-8 * 2 = -16
Thus, A = -16/3
Michael needs 6 1/2 feet of metal flashing to complete a household projects.He has two small pieces measuring 3 1/8 feet and 1 3/4 feet. How many feet of metal flashing does Michael need to purchase?
Answer:
Michael needs to purchase 6 1/4 feet of metal flashing.
Step-by-step explanation:
To determine the number of feet of metal flashing that Michael needs to purchase, we need to add the lengths of the two small pieces he already has:
3 1/8 feet + 1 3/4 feet
To add these two fractions, we need to have a common denominator. In this case, the smallest common denominator is 8:
3 4/8 feet + 1 14/8 feet = 4 18/8 feet
Now we can simplify the mixed number by converting it to an improper fraction:
4 18/8 feet = (4 x 8 + 18)/8 feet = 50/8 feet
So Michael already has 50/8 feet of metal flashing. To determine how much more he needs to purchase, we need to subtract this amount from the total amount he needs:
6 1/2 feet - 50/8 feet
To subtract these two fractions, we again need to have a common denominator. In this case, the smallest common denominator is 8:
6 4/8 feet - 50/8 feet = (6 x 8 + 4)/8 feet - 50/8 feet = 52/8 feet - 50/8 feet = 2/8 feet
So Michael needs to purchase an additional 2/8 feet of metal flashing to complete his household project, which simplifies to 1/4 feet. Therefore, Michael needs to purchase a total of:
50/8 feet + 1/4 feet = 6 1/4 feet
-8 = - 5w + 2(w+2)
w = what?
PLEASE GUYS I NEED YOUR HELP WITH THIS
The table and graph is mentioned below.
Describe Graph?In mathematics, a graph is a visual representation of a set of objects, often referred to as vertices or nodes, and the connections or edges that exist between them. Graphs are used to represent a wide range of mathematical concepts, such as functions, equations, and data sets.
A graph can be thought of as a collection of points or vertices that are connected by lines or edges. The way these vertices and edges are arranged can convey important information about the relationships between the objects being represented.
Graphs can be classified into different types, such as directed or undirected graphs, weighted or unweighted graphs, and cyclic or acyclic graphs. They can also be used to model real-world systems, such as social networks, transportation systems, and computer networks.
a)Table for Members:
Number of Movies (n) Cost (C1)
0 $75.00
10 $95.00
20 $115.00
30 $135.00
40 $155.00
50 $175.00
Table for Non-members:
Number of Movies (n) Cost (C2)
0 $5.75
10 $60.75
20 $115.75
30 $170.75
40 $225.75
50 $280.75
b) On the same set of axes, the graph is attached below.
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Different kinds of graphs, including directed and undirected graphs, weighted and unweighted graphs, and cyclic and acyclic graphs, can be distinguished.
Describe Graph?In mathematics, a graph is a picture of a collection of things, also known as vertices or nodes, and the links or edges that join them. Numerous mathematical ideas, including functions, formulae, and data sets, are represented by graphs.
A collection of vertices or points linked by lines or edges is referred to as a graph. The arrangement of these vertices and edges can reveal crucial details about the connections between the things being represented.
Different kinds of graphs, including directed and undirected graphs, weighted and unweighted graphs, and cyclic and acyclic graphs, can be distinguished. Additionally, they can be used to simulate real-world systems like computer networks, transit systems, and social networks.
a)Table for Members:
Number of Movies (n) Cost (C1)
0 $75.00
10 $95.00
20 $115.00
30 $135.00
40 $155.00
50 $175.00
Table for Non-members:
Number of Movies (n) Cost (C2)
0 $5.75
10 $60.75
20 $115.75
30 $170.75
40 $225.75
50 $280.75
b) On the same set of axes, the graph is attached below.
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Divide f(x) by d(x). Your answer
should be in the following format:
f(x) = Q(x)
-
f(x)/d(x)= −2x³ + 15x² − x + 10
x - 7
R(x) = [?]
Answer:
The quotient is Q(x) = -2x² + x + 6 and the remainder is R(x) = 52.
Step-by-step explanation:
-2x² + x + 6
------------------------
x - 7 | -2x³ + 15x² - x + 10
-(-2x³ + 14x²)
---------------
x² - x
-(x² - 7x)
---------
6x + 10
-(6x - 42)
----------
52
x^2 =−8x−7 solve by rewriting the square
I HOPE THIS HELPS
x=−7
x=−1
x
2
=−8x−7
Add 8x to both sides.
x
2
+8x=−7
Add 7 to both sides.
x
2
+8x+7=0
To solve the equation, factor x
2
+8x+7 using formula x
2
+(a+b)x+ab=(x+a)(x+b). To find a and b, set up a system to be solved.
a+b=8
ab=7
Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. The only such pair is the system solution.
a=1
b=7
Rewrite factored expression (x+a)(x+b) using the obtained values.
(x+1)(x+7)
To find equation solutions, solve x+1=0 and x+7=0.
x=−1
x=−7
100 POINTS PLEASEEE HELPP BRAINLIEST
Answer:
B
Step-by-step explanation:
Answer and Explanation: Nuclear fusion takes place at very high temperature and pressure so that the two elements fuse together, forming new, heavier elements. The nuclear fusion reaction releases a massive amount of energy, and it normally takes place in the core of the stars.
hope that was the answer
Answer:
Its c it has to be because its merge and if u look it up it shows and that's what it means yw!
Step-by-step explanation:
81^3/4 / 81^1/2 =
A. (81/3)^ -1/2
B. 27
c. 9
d. 3
Determine the visibility distance for pretoria use 1,609km=1mile
Based on the information provided, the visibility distance for Pretoria in kilometers is 19.30 kilometers.
What is the visibility distance from Pretoria in kilometers?The table shows the visibility from Pretoria is 12, miles, while the visibility in Cape Town is 6 miles. This implies we need to change miles to kilometers. These two units are used for distance but they are not equivalent as 1 mile = 1.609 kilometers, knowing this, let's calculate the distance in kilometers:
12 miles x 1.609 = 19.30 kilometers.
Note: This question is incomplete, below I attach the missing information:
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The triangular prism has a volume of 252 yd³. What is the height, h, of the prism?
Answer:
The height of the prism is 9yd.
Step-by-step explanation:
The volume of the prism is
Vol
= BaseArea×height
The area of the base is the area of the triangle.
Area_triangle
= 1/2 b•h
= 1/2•8•7
= 28
28 is the BaseArea of the prism.
Again the volume of the prism is:
Vol = BaseArea•h
This h is the height of the prism. That is what we are looking for.
Fill in what we know or calculated already.
252 = 28•h
Divide by 28
9 = h
The height of the prism is 9yd.
please help me on this question
Answer:
6.1 cm
Step-by-step explanation:
We have to find the hypotenuse of the orange triangle which will be the leg of the green triangle
[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]
[tex]4.2^{2}[/tex] + [tex]4^{2}[/tex] = [tex]c^{2}[/tex]
17.64 + 16 = [tex]c^{2}[/tex]
33.64 = [tex]c^{2}[/tex]
[tex]\sqrt{33.64}[/tex] = [tex]c^{2}[/tex]
5.8 = c
[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]
[tex]2^{2}[/tex] + [tex]5.8^{2}[/tex] = [tex]c^{2}[/tex]
4 + 33.64 = [tex]c^{2}[/tex]
37.64 = [tex]c^{2}[/tex]
[tex]\sqrt{37.64}[/tex] = [tex]\sqrt{c^{2} }[/tex]
6.13514466007 = c This is a rounded number. This is an irrational number. It never repeats or terminates.
Rounded to 1 decimal place
6.1
Helping in the name of Jesus.
What is the value of x?
Enter your answer in the box.
Answer:
x = 7
Step-by-step explanation:
You want the value of x in the diagram of similar triangles.
ProportionCorresponding side segments in the figure are proportional:
(2x +10)/(3) = (40)/(5)
2x +10 = 3·8 . . . . . . . . . . multiply by 3
2x = 14 . . . . . . . . . . . subtract 10
x = 7 . . . . . . . . . . divide by 2
The value of x is 7.
Need help pls
question 1: how many cups of garlic are needed to make 40 servings of soup?
question 2: how many cups of tomato paste are needed to make 60 servings of soup?
question 3: how many cups of carrots are needed to make 30 servings of soup?
Answer:
Sure, I can help you with that!
To start, let's look at the ingredient list and see what information we have:
- 8 cups water
- ½ cup garlic
- ½ cup onion
- 1 ½ cups chopped carrots
- ½ cup tomato paste
- 2 cups sliced potatoes
- 1 cup olive oil
To make the calculations, we can set up ratios that relate the amount of each ingredient to the number of servings of soup. For example, if we want to know how much garlic we need for 40 servings of soup, we can set up the following ratio:
½ cup garlic / 10 servings = x cups garlic / 40 servings
To solve for x, we can cross-multiply and simplify:
(½ cup garlic) * 40 servings = (10 servings) * x cups garlic
20 cups = 10x
x = 2 cups
So we would need 2 cups of garlic to make 40 servings of soup.
Similarly, we can set up ratios for the other questions:
Question 2:
½ cup tomato paste / 10 servings = x cups tomato paste / 60 servings
(½ cup tomato paste) * 60 servings = (10 servings) * x cups tomato paste
30 cups = 10x
x = 3 cups
So we would need 3 cups of tomato paste to make 60 servings of soup.
Question 3:
1 ½ cups chopped carrots / 10 servings = x cups chopped carrots / 30 servings
(1 ½ cups chopped carrots) * 30 servings = (10 servings) * x cups chopped carrots
45 cups = 10x
x = 4.5 cups
So we would need 4.5 cups of chopped carrots to make 30 servings of soup.
here I simplified and checked the cross products of the ratios.
Question 1:
½ cup garlic / 10 servings = x cups garlic / 40 servings
Cross-multiplying, we get:
(½ cup garlic) * 40 servings = (10 servings) * x cups garlic
20 cups = 10x
Dividing both sides by 10, we get:
x = 2 cups garlic
Therefore, we need 2 cups of garlic to make 40 servings of soup.
Checking the cross products:
(½ cup garlic) * 40 servings = (10 servings) * 2 cups garlic
20 cups = 20 cups
The cross products are equal, so my answer is correct.
Question 2:
½ cup tomato paste / 10 servings = x cups tomato paste / 60 servings
Cross-multiplying, we get:
(½ cup tomato paste) * 60 servings = (10 servings) * x cups tomato paste
30 cups = 10x
Dividing both sides by 10, we get:
x = 3 cups tomato paste
Therefore, we need 3 cups of tomato paste to make 60 servings of soup.
Checking the cross products:
(½ cup tomato paste) * 60 servings = (10 servings) * 3 cups tomato paste
30 cups = 30 cups
The cross products are equal, so my answer is correct.
Question 3:
1 ½ cups chopped carrots / 10 servings = x cups chopped carrots / 30 servings
Cross-multiplying, we get:
(1 ½ cups chopped carrots) * 30 servings = (10 servings) * x cups chopped carrots
45 cups = 10x
Dividing both sides by 10, we get:
x = 4.5 cups chopped carrots
Therefore, we need 4.5 cups of chopped carrots to make 30 servings of soup.
Checking the cross products:
(1 ½ cups chopped carrots) * 30 servings = (10 servings) * 4.5 cups chopped carrots
45 cups = 45 cups
The cross products are equal, so my answer is correct.
can you solve this question?
f'(0)=?
The derivative exists at x=0 and its value is 0. So, f'(0) = 0.
Describe Derivative?The derivative of a function can be thought of as the slope of a tangent line to the function's graph at a specific point. This tangent line represents the instantaneous rate of change of the function at that point. The derivative of a function can be used to find critical points, which are points where the function reaches a maximum or minimum value, and to find the concavity of the function, which indicates the direction in which the function is changing.
The derivative can be calculated using different methods, including the limit definition of the derivative, the power rule, the product rule, the quotient rule, and the chain rule. The derivative can also be used to calculate the slope of a curve, the velocity of a moving object, and the acceleration of an object.
To find f'(0) using the definition of a derivative, we need to use the following formula:
f'(a) = lim(h->0) [f(a+h) - f(a)]/h
where "a" is the point at which we want to find the derivative, and "h" is a small value that approaches zero.
In this case, we want to find f'(0). Let's use the formula and simplify the expression:
f'(0) = lim(h->0) [f(0+h) - f(0)]/h
= lim(h->0) [h²sin(1/h)]/h (since f(0)=0)
= lim(h->0) [hsin(1/h)]
Now, we need to evaluate this limit. We can rewrite the limit using the squeeze theorem, which says that if we have two functions, g(x) and h(x), such that g(x) ≤ f(x) ≤ h(x) for all x in some interval, and if lim(x->a) g(x) = lim(x->a) h(x) = L, then lim(x->a) f(x) = L.
In our case, we have:
-1 ≤ sin(1/h) ≤ 1 for all h≠0 (using the fact that -1 ≤ sin(x) ≤ 1 for all x)
-h ≤ hsin(1/h) ≤ h for all h≠0 (multiplying by h, which is always non-negative)
Therefore, by the squeeze theorem, we have:
lim(h->0) -h = 0 = lim(h->0) h
Since both limits are equal, we can conclude that the limit of hsin(1/h) as h approaches 0 exists and is equal to 0.
Thus, f'(0) = 0.
Therefore, the derivative exists at x=0 and its value is 0. So, f'(0) = 0.
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If the store receives a new shipment of 20 car batteries, (we don't know this, but) 5 of them are faulty, and we selected 2 car batteries at random, then what is the probability that;
A. both of them are good batteries?
B. one battery is good while one battery is bad?
c. both batteries are bad?
a. The probability that both of them are good is 9/16
b. Probability that one battery is good while one 3/16
c. probability that both batteries are bad is 1/16
What is probability?A probability is a number that reflects the chance or likelihood that a particular event will occur. Probabilities can be expressed as proportions that range from 0 to 1.
Probability = sample space / total outcome
the sample space for bad batteries = 5
the sample space for good batteries = 15
Therefore
a. probability that both are good = 15/20 × 15/20 = 3/4 × 3/4 = 9/16
b. probability that a battery is good and the other is bad = 15/20 × 5/20
= 3/4 × 1/4 = 3/16
c. The probability that both are bad
= 5/20 × 5/20 = 1/4 × 1/4 = 1/16
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What is the mean absolute deviation of 2,5,3,5,4,3,3,5,4,4
Answer:
Step-by-step explanation:
To find the mean absolute deviation (MAD), we first need to find the mean of the data set:
mean = (2 + 5 + 3 + 5 + 4 + 3 + 3 + 5 + 4 + 4) / 10
mean = 4
Next, we find the absolute deviation of each data point from the mean:
|2 - 4| = 2
|5 - 4| = 1
|3 - 4| = 1
|5 - 4| = 1
|4 - 4| = 0
|3 - 4| = 1
|3 - 4| = 1
|5 - 4| = 1
|4 - 4| = 0
|4 - 4| = 0
Then, we find the mean of these absolute deviations:
MAD = (2 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 0 + 0) / 10
MAD = 0.8
Therefore, the mean absolute deviation of the data set is 0.8.
You have 9 apples and 7 oranges in a basket. You take randomly 3
items from the basket. What is the probability that you selected 1 apple and 2 oranges?
Please write your answer as a decimal. Round your answer to three decimal places.
Answer:
0.337 or about 33.7%
Step-by-step explanation:
The number of ways to choose 1 apple out of 9 is:
C(9, 1) = 9! / (1! * (9 - 1)!) = 9
The number of ways to choose 2 oranges out of 7 is:
C(7, 2) = 7! / (2! * (7 - 2)!) = 21
So the total number of ways to choose 1 apple and 2 oranges is:
9 * 21 = 189
The total number of ways to choose 3 fruits out of 16 is:
C(16, 3) = 560
Therefore, the probability of selecting 1 apple and 2 oranges is:
189 / 560 ≈ 0.337 or about 33.7%
Help step by step (special right triangles) pls
The hypotenuse of the right angled triangle is [tex]$14\sqrt{2}$[/tex].
What is hypotenuse?
The hypotenuse is the longest side of a right-angled triangle and is opposite to the right angle. It is the side that is opposite to the 90-degree angle and is located opposite the right angle.
To solve this problem, we can use the concept of special right triangles, specifically the 45-45-90 right triangle. In a 45-45-90 right triangle, the sides are in the ratio of 1:1:sqrt(2).
Let's label the length of the triangle as [tex]$L$[/tex], the hypotenuse as [tex]$H$[/tex], and the angle between the hypotenuse and base length as [tex]45[/tex]°.
We are given that the angle formed between the hypotenuse and the base length is 45 degrees. In a 45-45-90 right triangle, the two legs are congruent, so the ratio of the sides is 1:1:sqrt(2).
Since we know that the ratio of the sides is 1:1:sqrt(2), we can set up the following equation:
[tex]$L:L:H = 1:1:\sqrt{2}$[/tex]
We are given that [tex]$L = 14$[/tex], so we can substitute this value into the equation:
[tex]$14:14:H = 1:1:\sqrt{2}$[/tex]
Solve for H.
Since the ratio of the sides is 1:1:sqrt(2), we know that [tex]$H$[/tex] is equal to [tex]$L$[/tex] multiplied by [tex]$\sqrt{2}$[/tex]. Therefore, we can solve for [tex]$H$[/tex] by multiplying [tex]$14$[/tex] by [tex]$\sqrt{2}$[/tex]:
[tex]$H = 14\sqrt{2}$[/tex]
Therefore, the hypotenuse of the right angled triangle is [tex]$14\sqrt{2}$[/tex].
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Tests show that the lives of light bulbs are
normally distributed with a mean of 750 hours
and a standard deviation of 75 hours. Find
the probability that a randomly selected light
bulb will last between 675 and 825 hours.
675 750 825 900 975
P = [? ]%
Hint: use the 68-95 99.7 rule.
525 600
Enter
the probability that a randomly selected light bulb will last between 675 and 825 hours is 68.26%, or 0.6826.
Define probabilityProbability is a measure of the likelihood of an event occurring. It is a numerical value that ranges from 0 to 1, where 0 represents an impossible event and 1 represents a certain event. A probability of 0.5 (or 50%) means that the event is equally likely to occur as not occur.
To solve this problem, we can use the standard normal distribution with a mean of 0 and a standard deviation of 1, and then convert the given values to z-scores using the formula:
z = (x - μ) / σ
where x is the value we want to find the probability for, μ is the mean, and σ is the standard deviation.
For the lower value of x (675 hours), the z-score is:
z = (675 - 750) / 75 = -1
For the upper value of x (825 hours), the z-score is:
z = (825 - 750) / 75 = 1
We can then use a standard normal distribution table or calculator to find the probabilities associated with these z-scores:
P(z < -1) ≈ 0.1587
P(z < 1) ≈ 0.8413
The probability of a randomly selected light bulb lasting between 675 and 825 hours is then:
P(-1 < z < 1) = P(z < 1) - P(z < -1) ≈ 0.8413 - 0.1587 ≈ 0.6826
Therefore, the probability that a randomly selected light bulb will last between 675 and 825 hours is approximately 68.26%, or 0.6826 as a decimal.
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The complete question is:
Image is attached below.
Todd is traveling to Mexico and needs to exchange $360 into Mexican pesos. If each dollar is worth 12.29 pesos, how many pesos will he get for his trip?
Answer: 4424.4 pesos
Step-by-step explanation:
To convert dollars to pesos, we need to multiply the number of dollars by the exchange rate:
360 dollars x 12.29 pesos/dollar = 4424.4 pesos
Therefore, Todd will get 4424.4 pesos for his trip to Mexico.
Find the volume of the
shaded part.
as already suggested, we can simply get the whole volume of the larger cone and then get the volume of the upper-smaller cone and if we subtract the volume of the upper-smaller cone, in essence making a hole in the larger cone, what's leftover is the shaded part.
[tex]\stackrel{ \textit{\LARGE Larger} }{\textit{volume of a cone}}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=4\\ h=10 \end{cases}\implies V=\cfrac{\pi (4)^2 (10)}{3} \\\\\\ \stackrel{ \textit{\LARGE Upper-Smaller} }{\textit{volume of a cone}}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=2\\ h=4 \end{cases}\implies V=\cfrac{\pi (2)^2 (4)}{3} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\cfrac{\pi (4)^2 (10)}{3}~~ - ~~\cfrac{\pi (2)^2 (4)}{3}\implies \cfrac{160\pi }{3}-\cfrac{16\pi }{3}\implies \cfrac{160\pi -16\pi }{3} \\\\\\ \cfrac{144\pi }{3} ~~ \approx ~~ \text{\LARGE 150.80}~cm^2[/tex]
Kayla is holding a bunch of cards in her hand from a standard deck of playing cards. Kayla’s hand of cards contain 6 spades, 7 hearts, 5 diamonds, and 2 clubs. Determine the probability, in decimal form, of randomly selecting a red card (hearts or diamonds) from Kayla’s hand.
Answer:
12/20 = 0.6
Step-by-step explanation:
The total number of cards in Kayla's hand is:
6 (spades) + 7 (hearts) + 5 (diamonds) + 2 (clubs) = 20
The number of red cards (hearts or diamonds) in Kayla's hand is:
7 (hearts) + 5 (diamonds) = 12
Therefore, the probability of randomly selecting a red card from Kayla's hand is:
12/20 = 0.6
Answer: 0.6
Step-by-step explanation: you add the total amount of cards she has which is 20(6+7+5+2) then the amount of hearts or diamonds is 7+5 for hearts and diamonds, which is =12 so the amount of hearts and diamonds divided by the total amount of cards, 12/20 which is 6/10 when divided by 2, 6/10 is 0.6, if you want to go further 6/10 can be broken down to 3/5 which is also 0.6
A woman leaves at 7 AM and drive to New York City 200 miles away. If she averages 50 mph what time will she arrive at the city?
The woman will arrive in New York City at 11 AM.
Plane takeoff angle.
Angel
During take off, a plane leaves the ground and travels in a straight line until it reaches a height of 10 km. The distance the plane flies during take off should be in the range 57 km to 62 km. What is the smallest possible angle that the path of the plane could make with the ground? Give your answer in degrees to 1 d. p.
Let's assume that the plane travels a distance of x km during take off and reaches a height of 10 km. Then, using trigonometry, we can find the angle θ between the ground and the path of the plane:
tan(θ) = 10/x
We want to find the smallest possible angle θ, which means we need to maximize x. From the given information, we know that x must be in the range 57 km to 62 km. Therefore, to maximize x, we choose x = 62 km.
Plugging this into the equation above, we get:
tan(θ) = 10/62
θ = arctan(10/62) ≈ 8.8°
Therefore, the smallest possible angle that the path of the plane could make with the ground is approximately 8.8 degrees.
Angel
Xochitl spots an airplane on radar that is currently approaching in a straight line, and that will fly directly overhead. The plane maintains a constant altitude of 7425 feet. Xochitl initially measures an angle of elevation of 19° to the plane at point A. At some later time, she measures an angle of elevation of 37° to the plane at point B.
Find the distance the plane traveled from point A to point B. Round your answer to the nearest foot if necessary
Let's assume that the distance from Xochitl to point A is d1 and the distance from Xochitl to point B is d2. We want to find the distance the plane traveled from point A to point B, which is the difference between d1 and d2.
From the given information, we can set up the following two equations:
tan(19°) = 7425/d1
tan(37°) = 7425/d2
Solving for d1 and d2, we get:
d1 = 7425/tan(19°) ≈ 22977.6 feet
d2 = 7425/tan(37°) ≈ 13060.2 feet
Therefore, the distance the plane traveled from point A to point B is:
d1 - d2 ≈ 9917.4 feet ≈ 3021 meters
Rounding to the nearest foot, we get that the distance the plane traveled from point A to point B is approximately 9917 feet.
Angel
Plane B is flying 75mph 75 mph faster than Plane A. Find the time it takes for Plane A to travel 2300 2300 miles if it takes Plane B the same amount of time to travel 2600 2600 miles.
Let's start by using the formula for distance, rate, and time:
distance = rate x time
Let's assume that Plane A's speed is r mph. Then we know that Plane B's speed is r + 75 mph.
We also know that Plane A travels 2300 miles and Plane B travels 2600 miles. Since they take the same amount of time to travel their respective distances, we can set up the following equation:
2300/r = 2600/(r + 75)
To solve for r, we can cross-multiply and simplify:
2300(r + 75) = 2600r
2300r + 172500 = 2600r
300r = 172500
r = 575 mph
Now that we know Plane A's speed, we can use the formula for distance, rate, and time to find the time it takes for Plane A to travel 2300 miles:
distance = rate x time
2300 = 575 x time
time = 4 hours
Therefore, it takes Plane A 4 hours to travel 2300 miles.
Angel
A woman leaves at 7 AM and drive to New York City 200 miles away. If she averages 50 mph what time will she arrive at the city?
To determine the arrival time of the woman in New York City, we need to use the formula for time:
time = distance / rate
In this case, the distance is 200 miles and the rate (or speed) is 50 mph. Plugging these values into the formula, we get:
time = 200 miles / 50 mph = 4 hours
Since the woman left at 7 AM, we can simply add the travel time of 4 hours to the departure time to get the arrival time:
7 AM + 4 hours = 11 AM
Therefore, the woman will arrive in New York City at 11 AM.
A tourist from Vermont won a jackpot worth 8,500,000 on a slot machine. The goverment gets 45% of his winning in taxes. How much of his winning does the tourist pay
The tourist has to pay the government $3,825,000.
make 45% into a decimal (0.45) and then multiply it by 8,500,000.
15y+11y-3-y equivalent alegrara expression
A.12y+10y
B. 10y+12
C.10+12y
D. 12y+10
Answer: A
Step-by-step explanation:
The answer is A.
Tomorrow is Sandra's family reunion, so Sandra and her dad are making their famous chocolate beet cake. At the grocery store, Sandra puts some beets on the scale. The recipe calls for only 1 1/4 pounds of beets, so Sandra removes 1/2 of a pound of beets from the scale. Now she has exactly what she needs for the cake
Answer:
If the recipe calls for 1 1/4 pounds of beets and Sandra removes 1/2 of a pound from the scale, then the amount of beets she has left is:
1 1/4 - 1/2 = 1 - 1/4 - 1/2 = 3/4 pounds
Therefore, Sandra has 3/4 pounds of beets, which is exactly what she needs for the chocolate beet cake recipe
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When Ibuprofen is given for fever to children 6 months of age up to 2 years, the usual dose is 5 milligrams (mg) per kilogram (kg) of body weight when the fever is under 102.5 degrees Fahrenheit. How much medicine would be usual dose for a 18 month old weighing 24 pounds?
Answer: 54.43 miligrams
Step-by-step explanation:
To calculate the dose of ibuprofen for an 18-month-old child weighing 24 pounds, we need to convert the weight from pounds to kilograms.
1 pound is equal to 0.453592 kilograms.
So, the weight of the child in kilograms is:
24 pounds × 0.453592 kg/pound = 10.886kg (rounded to three decimal places)
Now we can use the given dosage information to calculate the usual dose of ibuprofen for the child.
The usual dose of ibuprofen is 5 mg/kg of body weight when the fever is under 102.5 degrees Fahrenheit.
So, for the 18-month-old child weighing 10.886 kg, the usual dose of ibuprofen would be:
5 mg/kg × 10.886 kg = 54.43 mg
Therefore, the usual dose of ibuprofen for an 18-month-old child weighing 24 pounds is 54.43 mg.
Answer:
First, we need to convert the weight of the child from pounds to kilograms since the dosage is given in milligrams per kilogram.
We can use the conversion factor: 1 pound = 0.453592 kilograms.
So, 24 pounds = 24 x 0.453592 = 10.8862 kg (rounded to 4 decimal places).
Next, we can calculate the usual dose of Ibuprofen by multiplying the weight of the child (in kg) by the dose per kg:
Usual dose = 5 mg/kg x 10.8862 kg = 54.431 mg
Therefore, the usual dose of Ibuprofen for an 18 month old weighing 24 pounds would be 54.431 mg when the fever is under 102.5 degrees Fahrenheit. However, it is important to note that dosages may vary depending on the specific circumstances, and it is always best to consult a healthcare provider for proper dosing instructions.
Step-by-step explanation:
help me please helpm!!!!!!!!!!!!!
Julia can expect to roll a 3 approximately 61 times if she rolls the die 200 times.
Define probabilityProbability is a means to gauge the likelihood that an event will take place. It is symbolized by the numbers 0 and 1, respectively, with 0 denoting an improbable event and 1 denoting an inescapable event. With two equally likely outcomes, switching a valid coin and coin flips have a chance of 0.5, or 50%. head or tail. A subfield of mathematics called probability theory examines random events rather than their attributes. It is employed in many different fields, including finance, science, building, and facts and statistics.
we found the best estimate for the probability of rolling a 3 to be:
p = (30 + 0.5) / 100 = 0.305
This means that the probability of rolling a 3 on any one roll of the die is 0.305.
If Julia rolls the die 200 times, we can use the formula for the expected value of a binomial distribution to find the expected number of 3's she will roll:
E(X) = np
where:
n = number of trials = 200
p = probability of success (rolling a 3) = 0.305
So, plugging in the values:
E(X) = 200 × 0.305
E(X) = 61
Therefore, Julia can expect to roll a 3 approximately 61 times if she rolls the die 200 times.
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Mary works in an office and her current salary is £28,500.
Mary has been successful in applying for a new role in the company and will receive a pay increase of 2/9.
What will Mary's new salary be after the pay increase? Give your answer correct to 2 decimal places.
Answer:
34833,33 £
Step-by-step explanation:
First, we need to find how much will her sallary increase:
[tex] \frac{28500 \times 2}{9}≈ 6333.33[/tex]
And now we add this number to her old salary:
28500 + 6333,33 = 34833,33 £
square root of 98 / simplify
Answer:
[tex] \sqrt{98} = \sqrt{49 \times 2} = \sqrt{49} \sqrt{2} = 7 \sqrt{2} [/tex]
A football player waiting to receive a kickoff stands at point B as the kicker, at point A, attempts to kick it 55 yd to him. The kicked ball travels a bit off course and travels 63 yd at an angle of 6 to the right of the receiver, as shown in the figure (point C). Find the distance the receiver must run to catch the ball to the nearest yard. Please show all work for full credit.
Answer:
Step-by-step explanation: