I really need help this problem
Which answer choice correctly represents an algebraic expression for 8 less than a number?
here are some answers
A. x – 8
B. 8 – x
C. x + 8
D. 8x
Answers
Answer:
it would be b since a number is being taken away from 8
Related Questions
please help me match them
Answers
Answer:
.
Step-by-step explanation:
Wright 4.17 * 10 ^ 3 In scientific notation please help
Answers
learning platforms that use algorithms to adjust the content that each student sees in order to maximize learning efficiency is called ___ learning.
Answers
Learning platforms that use algorithms to adjust the content that each student sees in order to maximize learning efficiency is called Adaptive learning
What is adaptive learning?Adaptive learning platforms utilize algorithms to tailor the learning experience for individual students based on their needs, abilities, and learning progress.
By analyzing data and feedback, adaptive learning systems can dynamically adjust the content, pace, and difficulty level to optimize learning efficiency and personalize the educational journey for each student.
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fond the value of x and find the length of xy
Answers
From this Triangle
Taking Triangle XZH, wanting to find HZ
\(\begin{gathered} We\text{ have to make use of pythgoras Theorem} \\ (XZ)^2=(XH)^2+(HZ)^2 \\ 12^2=8^2\text{ + }(HZ)^2 \\ 144\text{ = 64 + }(HZ)^2 \\ 144-64\text{ = }(HZ)^2 \\ (HZ)^2\text{ = 80} \\ (HZ)\text{ = }\sqrt[]{80\text{ }}\text{ =8.94} \\ \end{gathered}\)From the Second triangle, ZHY
\(\begin{gathered} ZY^2=HZ^2+HY^2 \\ (x+3)^2\text{ =}8.94^2+x^2 \\ x^2+6x^{}\text{ + 9 = }80+x^2 \\ x^2-x^2\text{ + 6x = 80 -9} \\ 6x\text{ = 71} \\ x\text{ =}\frac{71}{6}\text{ =11.83} \\ \end{gathered}\)XY = x + 8
= 11.83 + 8
=19.83
A clock has a diameter of 16 inches. how far does the hour hand travel during 5 hours? use 3.14 for pi.
Answers
Distance hour hand travel in 5 hours is 20.94 inches.
What is a diameter?A diameter of a circle is any straight line segment that passes through the center of the circle and has endpoints on the circle in geometry. It is also known as the circle's longest chord. Both definitions apply to the diameter of a sphere.To find the distance hour hand travel in 5 hours:
Let's say the hour hand completed one full round around the clock. If this was the case, it would have been 2\(\pi\)×8 inches around. We know that the hour hand only traveled 5 hours around the clock rather than 12, thus our formula is 2\(\pi\)×8×( 5/12 ).Distance hour hand travel is 20.94 inches.Therefore, the distance hour hand travel in 5 hours is 20.94 inches.
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What is the value of the expression 12 x (-1.6)
Answers
Answer: -19.2
Step-by-step explanation:
what is 525.4 has a fraction
Answers
Answer: \(525 \frac{2}{5}\)
Step-by-step explanation:
the area of a playground is 256²m find the length of the playground
Answers
Answer:
I'm pretty sure the length is 16m.
Step-by-step explanation:
If the area is a total of 256^2 m, then finding the square root of that area would get you the side length of the playground. The square root of 256 is 16, therefore the sidelength of the playground is 16m :)
I need help with #4 pls
Answers
60+8x =108
We can do this because both trapezoids are congruent .
Now we will subtract 60 from both sides of the equal sides .
8x= 48
Divide both sides by 8
x=6
Now that we have the value of x we can plug it in to solve for y
8y-3x=62
8y-3(6)=62
8y-18=62
8y=80
y=10
what constant $c$ makes the expression a perfect square? \[49x^2-42x c\]
Answers
Answer:
Step-by-step explanation:
\(49x^2-42x+(\frac{42}{2})^2=49x^2-42x+(\frac{42}{2} )^2\) (completing the square)
\(49x^2-42x+441=49x^2-42x+21^2\)
\(=(7x-21)^2\)
So \(49x^2-42x+441=(7x-21)^2\)
Solution: The required constant is 441.
Remember: Completing the square IN \(ax^2+bx+c\) involves adding \((\frac{b}{2} )^2\) to both sides of the equation. THIS KEEPS IT BALANCED AND ALLOWS US TO MAKE A PERFECT SQUARE.
Your car weights 1.722 tons. How many ounces is that?
Answers
Answer:
55,104 ounces
Step-by-step explanation:
Given the pre-image ABCD and the image after a dilation, A'B'C'D', what is true about the polygons? Check all that apply.
The length AB is 2.
The length A'B' is 3.
The image is smaller than the pre-image.
The scale factor is Three-halves.
The scale factor is Two-thirds.
Answers
For the given dilation of the polygons the correct answer are The length AB is 2. The length A'B' is 3. The scale factor is Three-halves.
What is dilation?Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is a picture with the same shape as the original. Yet, there is a variation in the shape's size. The initial form should be stretched or contracted during a dilatation. The phrase "scale factor" describes this transition.
The distance formula for the coordinates is given as:
d(A, B) = |x1 - x2|
From the figure we observe that,
d(A, B) = |2 - 4|
d(A, B) = |-2|
d(A, B) = 2 units.
Hence, option A is correct.
Also, the length of A'B' is:
d(A', B') = |3 - 6| = |-3| = 3 units.
Hence, option B is correct.
The original shape is called the pre-image in a transformation (in this example, a dilation), and the transformed shape is called the image.
The third response is untrue since the picture is larger than the pre-image.
The scale factor of the images is:
2k = 3
k = 3/2.
Hence, option 4 is correct.
The last option is also false, as the scale factor is already determined.
Hence, for the given dilation of the polygons the correct answer are The length AB is 2. The length A'B' is 3. The scale factor is Three-halves.
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The complete question is:
A mountain climber started his climb at 50 feet above see level, he then descended 28 feet. He then raised 3 feet to rest in his cot to make his final 10 feet climb down. Write an expression to find his position relative to his final position.
Answers
Given :
A mountain climber started his climb at 50 feet above see level .
He then raised 3 feet to rest in his cot to make his final 10 feet climb down.
To Find :
An expression to find his position relative to his final position.
Solution :
Let , final position is h .
h is given by :
\(h=\text{(Initial position)-(initial descended)+(height raised to rest)-(final descended)}\\\\h=50 -28 +3-10\ feet\\\\h=15\ feet\)
So , his final position is 15 feet .
Hence , this is the required solution .
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n-75, find the probability of a sample mean being greater than 231 if 230 and ơ 59. For a sample of n-75, the probablity of a sample mean being greater than 231 if-230 and ơ-598 (Round to four decimal places as needed.) Would the given sample mean be considered unusual? The sample mean wouldbe considered unusual because it does not lie within the range of a usual event, namely within the sample means 2 standard deviations of the mean of
Answers
To find the probability of a sample mean being greater than 231, we need to use the z-score formula:
z = (x - μ) / (σ / √n)
where x is the sample mean, μ is the population mean, σ is the standard deviation, and n is the sample size.
Given:
μ = 230
σ = 59
n = 75
x = 231
Calculate the z-score:
z = (231 - 230) / (59 / √75) ≈ 0.1374
Now, we can use a z-table or an online calculator to find the probability of a z-score greater than 0.1374, which is approximately 0.4453.
Therefore, the probability of a sample mean being greater than 231 is 0.4453.
A sample mean would be considered unusual if it falls outside the range of 2 standard deviations from the mean of the sampling distribution. In this case, the range would be:
\(μ ± 2 * (σ / √n) = 230 ± 2 * (59 / √75) ≈ 230 ± 13.6\)
The range for usual sample means is approximately \(216.4 to 243.6\). Since 231 lies within this range, the given sample mean would not be considered unusual.
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enter the value of P so that the expression 4(10+n) is equivalent to 4(n+p)
Answers
Answer:
I think it is 10
Step-by-step explanation:
Only because I believe n is still unknown and 4 must be multiplied
example
4(10 + n)
40 + 4n
now if P = 10
4(n + p)
4(n + 10)
4n + 40
Answer:
P=10
Step-by-step explanation:
4(10+n)=4(n+p)
40+4n=4n+4p
40=4p+4n-4n
40=4p
p=10
n=0
The distance between Saturn and the Sun is 9. 54 AU. (One AU is the same as 150 million kilometers. )This distance in kilometers is ___
million kilometers
Answers
The distance between Saturn and the Sun is about 1.431 billion kilometers or 1.431 x 10⁹ km.
The given distance between Saturn and the Sun is 9.54 AU. One astronomical unit (AU) is equal to the average distance between the Earth and the Sun, which is approximately 150 million kilometers. Therefore, to find the distance between Saturn and the Sun in kilometers, we can multiply 9.54 AU by 150 million kilometers/AU. This gives us a distance of approximately 1.431 billion kilometers. The distance between Saturn and the Sun is an important astronomical measurement that helps scientists understand the solar system and the orbits of planets.
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Solve the equation for all solutions in the interval. Write each answer in radians.
Answers
We are given a problem regarding trigonometric identities and asked to resolve for theta.
\(4\sec \theta-\sqrt[]{3}=\sqrt[]{3}+7\sec \theta\)Recall that:
\(\sec \theta=\frac{1}{\cos \theta}\)Therefore, we have:
\(\begin{gathered} \frac{4}{\cos\theta}-\sqrt[]{3}=\sqrt[]{3}+\frac{7}{\cos\theta} \\ \text{ We add }\sqrt[]{3}\text{ and subtract }\frac{7}{\cos\theta}\text{ from both sides to get:} \\ \frac{4}{\cos\theta}-\frac{7}{\cos\theta}=2\sqrt[]{3} \\ -\frac{3}{\cos\theta}=2\sqrt[]{3} \\ \text{Multiply both sides by }\cos \theta\text{ and divide both sides by }2\sqrt[]{3}\text{ to get:} \\ \cos \theta=-\frac{3}{2\sqrt[]{3}}=-\frac{\sqrt[]{3}}{2} \\ \theta=\cos ^{-1}(-\frac{\sqrt[]{3}}{2})=150^o \\ \end{gathered}\)In radians, we have:
\(\frac{150\pi}{180}=\frac{5\pi}{6}\)A store has a 40\%40%40, percent off sale on headphones. With this discount, the price of one pair of headphones is \$36$36dollar sign, 36.
What is the original price of the pair of headphones?
Answers
Answer:
$50.40
Step-by-step explanation:
So if with the discount of 40%, the headphones are $36, multiply the percent by the discounted number then add that back.
0.4 x 36 = 14.4
36 + 14.4 = 50.4
So the original price was $50.40
Which shows Angle P O Q?
Answers
Answer: Which shows Angle P O Q? Option (A)
(A) Q Line segments Q O and O P combine to form an angle.
P
R
P
Step-by-step explanation:
Answer:
its a
Step-by-step explanation:
A school lunch offers three different fruits and two different vegetables as side dishes. You are served two different side dishes at random. Find the probability that you are served a vegetable second given that you were served a fruit first.
The probability is ___%.
Answers
Answer: 50%
Step-by-step explanation:
probability of fruit first a is -> fruit and then veg or fruit and then fruit
= 3/5*2/5 +3/5*2/5
hence probability of a fruits first and then veg = (5/25)/(10/25)
=0.5
for percentage 0.5*100 = 50%
The probability of being served a vegetable second given that you were served a fruit first is 50%.
What is Probability?It is a branch of mathematics that deals with the occurrence of a random event.
Let event F be the event that a fruit is served first, and
let event V be the event that a vegetable is served second
P(V|F) = P(F and V) / P(F) by conditional probability
There are three fruits to choose from out of five side dishes, so the probability of getting a fruit first is 3/5.
After one fruit has been chosen, there are two vegetables to choose from out of four remaining side dishes
The probability of getting a vegetable second, given that a fruit was served first, is 2/4.
P(F and V) = (3/5) × (2/4) = 3/10
the probability of getting a fruit first is 3/5
P(F)=3/5
P(V|F) = P(F and V) / P(F)
= (3/10) / (3/5)
= 1/2
= 50%
Therefore, the probability of being served a vegetable second given that you were served a fruit first is 50%.
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the sum of 3 and p divided by q ( its not 3+p/q apparently because thats wrong on my thing)
Answers
Answer:
\( \frac{3 + p}{q} \)
Step-by-step explanation:
Because it says 3 and p then you divide both of them by q
Hope this helps!
If you have any questions ask!
You have to add 3 and p before dividing by q.
(3 + p)/q
Show your working and select which option is correct. Note that
none of the options may be correct.
Let the eigenvalues of of 12² 1 (A) a=-5 and 6 = 2. (B) a=5 and 6 = -2. (C) a=5 and b=2 (D) a=-5 and 6 = -2. 19 be 5 and -2. What are the values of a and 67
Answers
In the given options, none of them correctly provide the eigenvalues for the matrix A, which are stated to be 5 and -2. Therefore, none of the options A, B, C, or D are correct.
The given matrix A has eigenvalues 5 and -2. We are asked to determine the values of a and b. Let's analyze the options provided:
(A) a=-5 and b=6=2:
Here, a=-5 contradicts the eigenvalue a=5, so this option is not correct.
(B) a=5 and b=6=-2:
Here, b=6=-2 contradicts the eigenvalue b=2, so this option is not correct.
(C) a=5 and b=2:
This option matches the eigenvalues a=5 and b=2. However, it is important to note that the given matrix only has eigenvalues of 5 and -2, so this option is not correct.
(D) a=-5 and b=6=-2:
Here, a=-5 matches the eigenvalue a=-5, but b=6=-2 contradicts the eigenvalue b=2. Therefore, this option is not correct.
Based on the given information, none of the options (A), (B), (C), or (D) is correct.
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Problem 2
Starting with a positive integer, a sequence is formed by choosing exactly
one of the following moves to create each new term:
•triple the current number
• delete the current number's final digit (provided it has at least two).
(a) Find a sequence that starts with 5 and ends with 8.
(b) Explain why any positive integer can start a sequence that ends in 8.
(c) Find a sequence that starts with 8 and ends with 999. Clearly describe
a systematic process that led to the discovery of your sequence.
Answers
a. The sequence that starts with 5 and ends with 8 is 5, 15, 3, 0, 0, 0, 8.
b. Since 8 is a single-digit number, it can be obtained by starting with any positive integer.
c. By systematically applying the sequence rules, we can construct a sequence that starts with 8 and ends with 999.
(a) To find a sequence that starts with 5 and ends with 8, we can follow these steps:
Start with 5.
Triple the current number: 5 * 3 = 15.
Delete the final digit: 15 -> 1.
Triple the current number: 1 * 3 = 3.
Delete the final digit: 3 -> 0.
Triple the current number: 0 * 3 = 0.
Triple the current number: 0 * 3 = 0.
Triple the current number: 0 * 3 = 0.
Add 8 to the sequence: 0, 0, 0, 8.
Therefore, the sequence that starts with 5 and ends with 8 is 5, 15, 3, 0, 0, 0, 8.
(b) Any positive integer can start a sequence that ends in 8 because of the following reasons:
Tripling a positive integer repeatedly will eventually lead to a number that is divisible by 3.
Dividing a number by 10 removes its final digit. By performing this operation repeatedly on a positive integer, we can reduce it to a single-digit number, at which point we cannot perform the operation anymore.
When a single-digit number is tripled, it becomes a number that is divisible by 3.
Since 8 is a single-digit number, it can be obtained by starting with any positive integer and following the sequence rules outlined above.
(c) To find a sequence that starts with 8 and ends with 999, we can follow this systematic process:
Start with 8.
Triple the current number: 8 * 3 = 24.
Delete the final digit: 24 -> 2.
Triple the current number: 2 * 3 = 6.
Delete the final digit: 6 -> 0.
Triple the current number: 0 * 3 = 0.
Add 9 to the sequence: 0, 0, 0, 9.
Triple the current number: 9 * 3 = 27.
Delete the final digit: 27 -> 2.
Triple the current number: 2 * 3 = 6.
Delete the final digit: 6 -> 0.
Triple the current number: 0 * 3 = 0.
Add 9 to the sequence: 0, 0, 0, 9, 0, 0, 0, 9.
Repeat steps 8-13 until the desired number is reached: 0, 0, 0, 9, 0, 0, 0, 9, 0, 0, 0, 9, ..., 0, 0, 0, 9, 99, 999.
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Kelly is making a rectangular garden that has a width of (2x + 3) and length of (2x - 4)
How much fencing does she need to enclose the garden (perimeter)?
Answers
Explanation
awarding 4 out of 50 minions a place in a dancing
competition.
solve:
Answers
The combination shows that the number of ways to select 4 out of the 50 minions will be 230300.
How to solve the combination?From the information given, it can be noted that this involves a combination rather than permutation.
In this case, the number of ways to select 4 out of the 50 minions will be:
= 50! / (50-4)!4!
= 230300
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Tom needs 9/10 pints of glue for his art project. He has 7/10 pints of glue. How much more glue does he need? write in simplest form.
Answers
Answer:
7/10-5/10= 2/10≈ 1/5
Step-by-step explanation:
hope this is right and i hoped this helped
Answer:
1/5 pint
Step-by-step explanation:
given:
Amount of Glue needed = 9/10 pints
Amount of Glue available = 7/10 pints
Amount of extra glue needed = Amount of glue needed - Amount of Glue Available
= 9/10 - 7/10
= (9-7)/10
= 2/10 (simplify by dividing both numerator and denominator by 2)
= 1/5 pint
PLEASE HELP ASAP PLZ
ALSO IF ANY ACTUAL HUMANS R SERING THIS PLZ ANSWER BC I TRIED ASKING AND THIS IS MY 6TH TIME AND I GOT SPAMMED BY BOTS SO IF UR A HUMAN PLZ ANSWER I WILL GIVE BRAINLIES
also plz don’t answer if ur gonna put down random things
Answers
Answer:
Step-by-step explanation:
What is the simplified form of this expression? (x+y)(x³y-3)
Answers
The simplified form of this expression is x^4y-3x+y^2x^3-3y
From the question, we have
(x+y)(x^3 y-3)
= xx^3 y-x⋅3+yx^3 y-y⋅3
=x^4y-3x+y^(1+1) x^3-3y
=x^4y-3x+y^2 x^3-3y
The simplified form of this expression is x^4y-3x+y^2 x^3-3y
Multiplication:
Mathematicians use multiplication to calculate the product of two or more numbers. It is a fundamental operation in mathematics that is frequently utilized in everyday life. When we need to combine groups of similar sizes, we utilize multiplication. The fundamental concept of repeatedly adding the same number is represented by the process of multiplication. The results of multiplying two or more numbers are known as the product of those numbers, and the factors that are multiplied are referred to as the factors. Repeated addition of the same number is made easier by multiplying the numbers.
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Pls help me in this question
Answers
Answer:
3
Step-by-step explanation:
since the diagonal are equal in length
6x-8=2x+4
4x=12
x=3
Peer review involves scientists openly publishing details of the methods they used, the results of
their experiments, and the reasoning behind their hypotheses for other scientists working in the
same field to evaluate.
A
False
B
True
4
Data from controlled experiments can provide evidence that one variable causes another.
А
False
B
True
Answers
Answer: 1. Peer review involves scientists openly publishing details of the methods they used, the results of
their experiments, and the reasoning behind their hypotheses for other scientists working in the
same field to evaluate. = B true .
2. Data from controlled experiments can provide evidence that one variable causes another. = B true .
Step-by-step explanation:
Peer review is when a scientist conducts an experiment and then gives all of their information and findings to peers in order for them to follow the findings and see if the first findings are rational.