The probability of the random variable X falling between 35 and 63 is approximately 0.9524 or 95.24%.
To compute the probability P(35 < X < 63), we need to calculate the area under the normal curve between the values of 35 and 63, based on the given mean (μ = 50) and standard deviation (σ = 7).
First, we can standardize the values of 35 and 63 using the formula:
Z = (X - μ) / σ
For 35:
Z1 = (35 - 50) / 7 = -2.14
For 63:
Z2 = (63 - 50) / 7 = 1.86
Next, we can find the corresponding areas under the normal curve using a standard normal distribution table or a statistical calculator.
Using the table or calculator, we can find the area to the left of Z1 (the lower z-score) and the area to the left of Z2 (the upper z-score). Let's assume that the area to the left of Z1 is 0.0162 and the area to the left of Z2 is 0.9686.
Finally, to find the area between Z1 and Z2, we subtract the area to the left of Z1 from the area to the left of Z2:
P(35 < X < 63) = 0.9686 - 0.0162 = 0.9524
Therefore, the probability of the random variable X falling between 35 and 63 is approximately 0.9524 or 95.24%.
In summary, by standardizing the values of 35 and 63 using the mean and standard deviation, we can calculate the corresponding z-scores and find the area under the normal curve between these z-scores to determine the probability of the random variable falling within the given range.
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Rose is getting balloons for her grandfather's birthday party. She wants each balloon string to be 6 feet long. At the party store, string is sold by the yard. If Rose wants to get 43 balloons, how many yards of string will she need?
1 foot =
1
3
yard
the temperature is dropping -3.75 degrees per hour. how many hours will the temperature drop for 4.5 hours
Answer:
It will drop 16.875 degrees
Step-by-step explanation:
3.75 × 4 = 15
.5 × 3.75 1.875
Answer:
-16.875
Step-by-step explanation:
This equation is quite simple and will only require one equation to solve. This is the equation,
-3.75×4.5=-16.875
The final answer is -16.875
A hiker average 3.4 miles per hours. If he hikes 2 hours and 15 minutes, then takes a 30-minute break, and hikes another 3 hours and 30 minutes, how many miles does he travel
The hiker's average speed is 3.4 miles per hour, so the total distance is
found to be 19.5 miles
What is distance?Distance is a scalar quantity, meaning that it can be represented as a single numerical value without direction.
To solve this problem, we need to calculate the total distance the hiker traveled in the given time frame.
We can calculate the total distance of the hike by multiplying the hiker's average speed with the total time he spent hiking.
The total time spent hiking is 5 hours and 45 minutes (2 hours and 15 minutes + 3 hours and 30 minutes).
Multiplying this with the hiker's average speed of 3.4 miles per hour, we get the total distance.
5 hours and 45 minutes= 5.75 hours
This problem can be solved using the following formula:
Distance (in miles) = Average Speed (in miles per hour) x Time (in hours)
Distance = 3.4 mph x 5.75 hours
Distance = 19.5 miles
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In a factory, 5 machines can create 13,000 forks in 8 hours. How many forks can be made in 6 hours by 3 machines?
Answer:
13000 / 8 = 1625
1625 / 5 = 325
325 *3 *6 = 5850
Answer: 5850
Step By Step: First divide 13,000 by 8, giving you 1,625. Divide that by 5,
to get 325. So each machine makes 325 an hour. Multiply That by 3, giving you 975, multiply that by 6, giving you 5,850.
HELp please!!!!!!!!!!!!!!!!!!!!!!11
Answer:
it’s 15x+30y-220
Step-by-step explanation:
Because you distribute and then you add the like terms
Can you help me solve this!
Hello!
surface area
= 2(6*2) + 2(4*2) + 4*6
= 2*12 + 2*8 + 24
= 24 + 16 + 24
= 64 square inches
HELPP MEE PLSSS HELPP
Answer:
angle N is 79, angle K is 22, angle P is 81, angle D is 76
Step-by-step explanation:
all of the angles should add up to 180 degrees so add the two angles you have and subtract them from 180
Answer:
KGH is similar
Step-by-step explanation:
using the triangle sum theorem
Our club has 10 members, and we need to appoint a president, a vice president, and a secretary. How many ways can we do this if: Each member can hold at most one office. Members can hole any number of offices
Answer: 720
Step-by-step explanation:
Given
A club has 10 members and needs one president, a vice president, and a secretary
There are 10 positions for president i.e. 10 ways to select a member for it
Similarly, there 9 persons left to choose a position for vice president
likewise 8 persons for secretary
Total no of ways to do it are
\(\Rightarrow 10\times 9\times 8\\\Rightarrow 720\ \text{ways}\)
1.4 km =
140m
1400m
14m
d
14000m
the average of 8 girls is 15 and the average of 6 girls is 13 find the average of the other two girls with equal age
Answer:
21
Step-by-step explanation:
Since the girls have the same age, let their age be x.
Then, their average is
\(\frac{x+x}{2} = \frac{2x}{2} = x\)
Let \(S_{i}\) denote the age of 'i' girls.
Then, \(S_{8} = S_{6} + x + x - eq(1)\)
Also, we have,
\(\frac{S_{8}}{8} =15 - eq(2)\)
\(\frac{S_{6}}{6} =13 - eq(3)\)
Then eq(2):
(from eq(1) and eq(3))
\(\frac{S_{6} + 2x}{8} =15\\\\\frac{13*6 + 2x}{8} = 15\\\\78+2x = 120\\\\2x = 120-78\\\\x = 21\)
The average of the other two girls with equal age is 21
Ashley is making lemonade. She has 4/5 cup of sugar. Each glass of lemonade requires 1/20 cup of sugar. How many glasses of lemonade can Ashley make?
Answer:
16 glasses
Step-by-step explanation:
4/5 divide by 1/20 = 16 glasses
Therefore, Ashley can make 16 glasses of lemonade.
Answer:
16 Glasses
Step-by-step explanation:
Since she has 4/5 cup of sugar and it requires 1/20 of a cup to make a single glass of lemonade, in order to get how many cups she can make we need to get the LCM (lowest common multiple) of both fractions (4/5 and 1/20). The LCM of 5 and 20 is 20. Now instead of 4/5 we have 16/20 and 1/20 remains the same. Since it takes 1/20 cup of sugar to make 1 glass of lemonade and Ashley has 16/20 cup of sugar, she can make 16 cups.
What is the value of the expression below?
−23 ⋅ 5−6
Question 1 options:
−45
−59
59
45
Answer:
b
Step-by-step explanation:
-3x + 4 < 16. Esta difícil
Answer:
x>-4
Step-by-step explanation:
Isabella is calculating the interest earned on a deposit of $3,000 in an account that earns 4% compound interest after 6 years.
$3,000 in an account that earns 4% compound interest after 6 years.
solution:\(p = 3000\)
\(r = 4\)
\(t = 6years\)
\(interest = \frac{prt}{100} \)
\( = \frac{3000 \times 6 \times 4}{100} \)
\( = 720\)
therefore, $720 is the current amount of interest.
Combine Like Terms: 1 + 5v + v
Answer:
1+6v
Step-by-step explanation:
add 5v and v
Which expression uses the greatest common factor and the distributive property to rewrite the sum 32 + 80?
16(2 + 80)
2016 + 80)
16(2 + 5)
8(4 + 10)
find the equation of the line shown
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
y = 2x ( domain : x ≥ 0 )
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
The equation of the line passing through the points (1, 2) and (5, 10) is 2x - y = 0.
To find the equation of a line given two points, we can use the point-slope form of a linear equation:
y - y1 = m(x - x1),
where (x1, y1) are the coordinates of one point on the line, m is the slope of the line, and (x, y) are the coordinates of any other point on the line.
In this case, two points on the line: (1, 2) and (5, 10).
First, let's calculate the slope (m) using the formula:
m = (y2 - y1) / (x2 - x1),
where (x1, y1) = (1, 2) and (x2, y2) = (5, 10).
m = (10 - 2) / (5 - 1) = 8 / 4 = 2.
Now that we have the slope, we can choose any of the given points to substitute into the point-slope form. Let's choose (1, 2):
y - 2 = 2(x - 1).
Expanding the equation, we get:
y - 2 = 2x - 2.
Rearranging the equation to the standard form, we have:
2x - y = 0.
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A business issued a 90-day note for $51,000 to a bank. The note was discounted at 7%. Assume a 360-day year. Question Content Area a. Journalize the entry to record the issuance of the note. If an amount box does not require an entry, leave it blank. If necessary, round to nearest whole dollar
The journal entry to record the issuance of the note is:
Debit: Cash = $51,000 (proceeds received)
Debit: Discount on Note Payable = $787 (computed as $51,000 x 7% x 90/360)
Credit: Notes Payable = $51,787 (face value of the note)
The entry can be summarized as:
Debit: Cash $51,000
Debit: Discount on Note Payable $787
Credit: Notes Payable $51,787
Lab report.
organisms and populations.
What conclusions can you draw about how resources availability affects populations of the organisms in an ecosystem?
The conclusion, the availability of resources such as water, food, and shelter affects the populations of organisms in an ecosystem.
In an ecosystem, the availability of resources such as water, food, and shelter have an impact on the populations of organisms living in that ecosystem. Populations are affected by the availability of resources, including abiotic and biotic factors that help support their survival.
The interaction between different populations of organisms in the ecosystem is essential, which includes plants and animals living together. In the ecosystem, the food chain is the primary interaction where organisms eat other organisms to survive.
Organisms such as herbivores feed on plants and serve as food for carnivores. The availability of food is a significant factor that determines the population of herbivores and carnivores in an ecosystem. The ecosystem also depends on the availability of water, which is vital for the survival of all organisms. Lack of water can lead to a decrease in population, especially for organisms that are unable to survive in dry environments.
Additionally, the availability of shelter is also significant in determining the population of an organism in an ecosystem. The shelter can include caves, trees, and other structures that serve as protection for organisms. The availability of shelter can influence the number of organisms that can survive in the ecosystem.
Understanding how resources availability impacts populations of the organisms in an ecosystem is crucial in preserving the ecosystem. Ecosystems with a balanced population of organisms are considered healthy, while those with unbalanced populations of organisms are considered unhealthy.
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question in picture. Geometry. Acellus.
Examining the figure properly shows that chord AB in the circle has its length to be equal to 16
How to find the length of ABInformation given from the question is interpreted as
let the center of the circle be O
BE = opposite = ?
OE = adjacent = 6
OB = OA = hypotenuse = radius = 10
Using Pythagoras theorem given by the the formula
hypotenuse² = opposite² + adjacent²
plugging the values as in the problem
10² = BE² + 6²
100 = BE² + 36
BE² = 100 - 36
BE = √64
BE = 8
Since line OE is the perpendicular bisector, BE = AE
and from the figure AB = BE + AE
= 8 + 8
= 16
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The time taken to clean up the Mt. Etna Pizza Parlour after it closes follows a normal distribution with a mean of 30 min and a standard deviation of 5 min. What is the probability that the cleanup crew will complete the job in less than 20 min? Choose one answer.
a. 0.977
b. 0.011
c. 0.500
d.0.023
The probability that the cleanup crew of the Mt. Etna Pizza Parlour will complete their job in less than 20 minutes is 0.011.
In this scenario, the mean is 30 minutes and the standard deviation is 5 minutes. To calculate the probability, we can use the Z-score formula:
Z= (X-μ)/σ
where X is the value we are interested in (20 in this case), μ is the mean (30), and σ is the standard deviation (5).
Substituting these values, we get:
Z = (20-30)/5 = -2
Using the Z-table, we can find the area under the normal distribution curve that corresponds to a Z-score of -2. This area is 0.0228, which is approximately equal to 0.011 when rounded to three decimal places. Therefore, the probability that the cleanup crew will complete the job in less than 20 minutes is 0.011 or about 1.1%.
In conclusion, the probability of the cleanup crew completing their job in less than 20 minutes is quite low as it is an unusual event that falls outside of the standard deviation of the normal distribution. This information may be useful for scheduling the cleaning staff or allocating resources for the pizza parlour.
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Help me please i don’t know what to do
Quadratic applications include: Horizontal Motion Issues For a moving object, one uses the formula h = -16t2 + vt+s. The following is represented by the variables: h is a symbol for the object's height when it is moving.
How can one calculate h in a projectile motion?h = v 0 y 2 2 g This equation, which only depends on the vertical component of the initial velocity, specifies the maximum height of a projectile above its launch site.
If v is the starting speed, g is the gravitational acceleration, and H is the highest point that may be reached in meters, then is the initial speed's angle from the horizontal plane (radians or degrees). The equation H = v 0 2 s I n 2 2 g yields the projectile's greatest height
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Which of these terms does not describe polygon A’B’C’D?
A. Rotation
B. Transformation
C. Reflection
D. Image
a box is full of tokens. each token has an integer printed on it, from 0 to 60. if drawn at random, how many tokens must you draw to be certain you get at least one that is odd?
Drawing 31 tokens ensures that you have at least one odd token, by the Pigeonhole Principle.
To be certain you get at least one token that is odd, you need to draw enough tokens to ensure that you exhaust all possible even numbers. Since there are 30 even numbers between 0 and 60, it follows that you must draw 31 tokens to be certain you get at least one that is odd.
This is known as the Pigeonhole Principle, which states that if there are n pigeonholes and n+1 pigeons, then at least one pigeonhole must contain more than one pigeon. In this case, the even numbers represent the n pigeonholes and the odd numbers represent the n+1 pigeons.
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why is probability limited to numbers between 0 and 1
Answer:
Probability by definition is the extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.
Since number of elements in the set of favourable cases is less than or equal to the number of elements in the set of whole number of cases, their ratio would always end up being 1 or less than one.
Probability equals one when favourable number of cases are same as that of the whole number of cases and probability equals zero when there is no favourable case
If f(x) = 4x + 8.
What is f (9)?
Need help
Answer:
4(9)+8=44
Step-by-step explanation:
Answer: 44
Step-by-step explanation:
F(x) = 4x +8 can be rewritten as y= 4x +8 where x is the input and y is hte output. If f(9) is the output and x is the input , switch x for 9 and solve.
f(9) = 4(9) + 8
f(9) = 36 + 8
f(9) = 44
Tammy is erecting an antenna that is 55’ tall. The guy wires are 65' long and attach 5’ below the top of the antenna. How far out from the base of the antenna should Tammy place the stakes that attach to the wires
Let us sketch out the figure representing the word problem
So, to obtain the value of x, the image above will be restructured and we will apply the method of Pythagoras theorem to obtain x.
Therefore, the formula for the Pythagoras theorem is,
\(\begin{gathered} a^2=b^2+c^2 \\ \text{where,} \\ a=65^{\prime} \\ b=50^{\prime} \\ c=x \end{gathered}\)Hence,
\(\begin{gathered} 65^2=50^2+x^2 \\ x=\sqrt[]{65^2-50^2} \\ x=\sqrt[]{4225-2500}=\sqrt[]{1725}=41.53311931\approx41.5(nearest\text{ tenth)} \\ \therefore x=41.5^{\prime} \end{gathered}\)Therefore, the base of the stakes that Tammy will attach to the wires should be 41.5'.
a fair -sided die is repeatedly rolled until an odd number appears. what is the probability that every even number appears at least once before the first occurrence of an odd
The probability that every even number appears at least once before the first occurrence of an odd is 1/20.
Given:
A fair 6-sided die is repeatedly rolled until an odd number appears.
There are 6! ways to order the 6 numbers and 3!(3!) ways to order the evens in the first three spots and the odds in the next three spots.
so the probability = 3!*3! / 6!
= 3!*3! / 6*5*4*3!
= 3*2*1 / 6*5*4
= 6*1 / 30*4
= 6/120
= 1/20
Therefore the probability that every even number appears at least once before the first occurrence of an odd is 1/20.
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Please help me please
Yesterday, two friends went into a bank to open savings accounts. Ted started by putting $300 in his account, and he will deposit an additional $4 each week. Carly made no initial deposit, but she will add $16 more each week. In a few weeks, the friends will have the same account balance. How many weeks will that take?
To solve this problem, we can use algebraic equations. Let's say that the number of weeks it takes for Ted and Carly to have the same account balance is "w".
Ted's account balance after "w" weeks can be represented by:
300 + 4w
Carly's account balance after "w" weeks can be represented by:
16w
We want to find out when their account balances will be equal, so we can set these two equations equal to each other:
300 + 4w = 16w
Simplifying this equation, we get:
300 = 12w
Dividing both sides by 12, we get:
25 = w
Therefore, it will take 25 weeks for Ted and Carly to have the same account balance.
In the diagram below, AB is parallel to CD. What is the value of x?
Answer:
150 degrees
Step-by-step explanation:
You can figure this out by looking at the degrees below d, and you see it is thirty, and that it is equal to the degree above the x, so then you subtract 30 from 180 to get 150. Hopefully that makes sence, I forgot what some of the terms are called.