What is 20% of 55?
I need you to explain all of the step and what numbers you divided
Please, help me, I really need your help
Answers
Answer:
12.1 is the answer
.....
Related Questions
What is the answer to this
Answers
Answer:
A
Step-by-step explanation:
Answer:
\(x < - 2\)
Step-by-step explanation:
Hope it is helpful...
Let X be a random variable representing the number of rolls of a fair die until we see the first 6. Next, choose with replacement a sample of size X from an urn with 5 red and 4 green balls. Let Y be the number of green balls in the sample. Find Var(Y).
Answers
As per the binomial distribution, the value of var(Y) is 0.00008
What is meant by binomial distribution?
In math, the Binomial distribution counts the number of successes in n trials, where sampling is done with replacement or the probability of success is constant from trial to trial
Here we have given that, X be a random variable representing the number of rolls of a fair die until we see the first 6. Next, choose with replacement a sample of size X from an urn with 5 red and 4 green balls. Let Y be the number of green balls in the sample.
And we need to find the value of var(Y).
Here we know that the value of n = 6 and the value of x is 4 and the probability is 0.05.
Then as per the binomial distribution formula, it can be calculated as,
By using a calculator, you can enter trials=6, p=0.05, and X=4 into a binomial probability distribution function (PDF). If doing this by hand, apply the binomial probability formula:
=> [6!/4!(6-4)!] x 0.05⁴ x (1- 0.05)⁶⁻⁴
=> 0.00008
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(3, 5), (4, 6), (3, 8), (2, 4), (1, 3), as a mapping
Answers
Answer:
Graph copy is needed..
Step-by-step explanation:
Photo cannot be pinned*
Four less than the product of a number (x)
and 5 is equal to 8 more than 2 added to
3 times the number. Which of these equa-
tions could be used to find the value of x?
Answers
Answer: The equation used to find the value of x is 5x - 4 = 3x + 10. The value of x is determined to be 7.
Step-by-step explanation:
Four less than the product of a number (x) and 5 = 5x - 4
8 more than 2 added to 3 times the number = 3x + 2 + 8 = 3x + 10
Four less than the product of a number (x) and 5 is equal to 8 more than 2 added to 3 times the number => 5x - 4 = 3x + 10
5x - 3x = 10 + 4
2x = 14
x = 14/2
therefore, x = 7
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Determine if the following equation is linear. If the equation is linear, convert it to standard form: ax+by=c
.
(−3+y)2−y2=−x+8
Answers
the answer is given below check it:
What percent of 40 is22 ?
Answers
Answer: 181.82
Explanation:
Step 1: We make the assumption that 22 is 100% since it is our output value.
Step 2: We next represent the value we seek with x.
Step 3: From step 1, it follows that 100%=22.
Step 4: In the same vein, x%=40.
Step 5: This gives us a pair of simple equations:
100%=22(1).
x%=40(2).
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the left hand side of both equations have the same unit (%); we have
100 percent/X percent = 22/40
Step 7: Taking the inverse (or reciprocal) of both sides yields
100 percent/X percent = 40/22
X = 181.82%
Therefore, 40 is 181.82% of 22.
Hope this helps^-^.
What is the slope of the line? Please help (50 points) I really need to turn in this assignment.
Answers
HUHS is looking to buy more sports equipment for the upcoming school year. The function C(x) = 314 - 7.7x models the cost of shipping the equipment, x, to the school. The function R(x) = 19.3x models the revenue the school earns from fundraising for the equipment, x, they want to buy. Which function, P9x), models the profit that the school earns if they fundraise for the equipment? (Profit = Revenue - Cost)
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According to the information the function for the profit p(x) is obtained by substracting the revenue and the costs.
\(p(x)=R(x)-C(x)\)replace the functions into the equation
\(p(x)=19.3x-(314-7.7x)\)distribute the negative sign
\(p(x)=19.3x-314+7.7x\)simplify the equation
\(p(x)=27x-314\)What of the following graph that is a straight line? 1:y =2x +7 or 2:y² = x-7 or y= 2x²+4 or y= 3x³
Answers
Answer:
1. y = 2x + 7
Step-by-step explanation:
The equation of a linear function is y = mx + b. The "x" has to be a first-degree polynomial (no exponents).
4. Explain the difference between (-5)² and
-5²
Answers
Answer:
the first one you have is a negative and 5-5-5-5-5
then same for other but oppoiste
Step-by-step explanation:
To find the distance between (-2,-3) and (4,1), Peggy's teacher drew a diagram and marked blue lines to represent the legs of a right triangle. Peggy then used 42 and 62 to find the distance represented by the red segment. What distance did she find ?
A √114
B √52
C 2020
D 5252
E 25
Answers
By using the formula for the distance we will see that the correct option is B:
√52
What distance did she find?
We will use the general formula to find the distance between two points (a, b) and (c, d)
it is:
distance = √( (a - c)^2 + (b - d)^2)
Here we want to find the distance between the points (-2,-3) and (4,1), if we use the above formula we will get:
distance = √( (-2 - 4)^2 + (-3 - 1)^2) = √( 36 + 16)
distance = √52
The correct option is B.
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Keri has some ball bearings. Each one is in the shape of a sphere with a radius of 6 mm.
(a) Find the volume of one ball bearing. Give your answer in mm3 in terms of pi
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The spring concert at a certain high school sold 150 tickets. Students were charged $3 each and adults $7 each. The income from the sale of tickets was $786. How many students and how many adults bought tickets?
Answers
Answer:
66 student tickets and 84 adult tickets
Step-by-step explanation:
Write a system of equations. When writing the equation, group together amounts that have the same labels. You can only use the amounts in one equation and not both. I am going to use x to represent student tickets and y to represent adult tickets.
\(x + y = 150\\3x + 7y = 786\)
I am going to use elimination to solve. To do this, I am going to eliminate the x variable first. I am going to multiply the first equation by -3. I am doing this so the x's have the exact same number, but one of them is negative and one is positive, so when they are added they will equal zero.
\(-3(x+y = 150)\\-3x-3y=-450\)
Your two new equations.
\(-3x-3y=-450\\3x+7y=786\)
Now add and solve for y.
\(4y = 336\\4y/4=336/4\\y = 84\)
Now solve for x. I am going to use the first equation and substitute 84 for y.
\(x+y=150\\x+84=150\\x+84-84=150-84\\x=66\)
Answer:
66 student tickets84 adult ticketsStep-by-step explanation:
Let x represent the number of higher-value (adult) tickets. Then 150-x is the number of student tickets. The total income from sales was ...
7x +3(150-x) = 786
4x = 336 . . . . . . . . . simplify, subtract 450
x = 84 . . . . . . . . divide by 4; number of adult tickets sold
150-x = 66 . . . . number of student tickets sold
66 students and 84 adults bought tickets.
Sienna buys a mystery pack of sparkly modeling clay. The pack has 5 colors, and there are 7 possible colors that are all equally likely. Sienna wants to know the probability that at least 2 of the colors will be the same. Which of the following is the best simulation? Explain your reason for your answer.
A. Roll a standard number cube 5 times for each trial. Let each number represent a different color. Run 50 trials and find the fraction of times that at least two of the same number are rolled.
B. Create a spinner with 5 equal sections. Label each section with a different color. Spin the spinner 7 times to see if it lands on the same color two or more times.
C. Create a spinner with 7 equal sections. Label each section with a different color. Spin the spinner 5 times for each trial. Run 50 trials and find the fraction of times the spinner lands on the same color two or more times.
D. Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.
Answers
The probability that at least 2 of the colors will be the same, the following is the best simulation is Option D Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.
Given, Sienna buys a mystery pack of sparkly modeling clay. The pack has 5 colors, and there are 7 possible colors that are all equally likely. We have to find the probability that at least 2 of the colors will be the same. There are 5 colors in the pack of clay, and 7 colors are possible in total.
So, the probability of picking any color at random is
P(picking a color) = 5/7 = 0.7143Let P(X = 2) be the probability that exactly 2 of the colors are the same.
Then, the probability that at least 2 of the colors are the same can be calculated by using the formula:
P(X ≥ 2) = 1 - P(X < 2).
The simulation method that can be used to find the probability of at least 2 of the colors will be the same in the mystery pack is option D.
Put 5 pieces of paper in a bag, each labeled with a different color. For each trial, randomly select and replace a paper 7 times. Run 50 trials and find the fraction of times that at least two of the same color appear.
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What is (I^2)+(I^2)+3x if x=I^2?
Show your work.
Answers
Answer:
-5
Step-by-step explanation:
(i^2) = -1 so -1 -1 + 3x = 3x - 2. If x = i^2 = -1, then 3x = -3. -3 - 2 = -5
YOU GET 50 POINTS IF YOU ANSWER THIS , The map shows the location of four places in a school. A coordinate plane is shown. There is a point at 5, 2 labeled Front office. There is a point at negative 6, 4 labeled Gym. There is a point at negative 4, negative 3 labeled Auditorium. There is a point at 6, negative 4 labeled Library. Peter's English class is located in the same quadrant as the auditorium. Which of the following could be the coordinates of the English classroom?
A (3, 2) B (−3, 2) C (−3, −2) D (3, −2)
Answers
Answer:
B
Step-by-step explanation:
Bc if u solve our you will get the answers and I’m learning about this stuff right now
Answer:
B
Step-by-step explanation:
Got it right
What is the value of x?
Answers
Answer:
12
Step-by-step explanation:
(10x - 20) + (6x + 8) = 180
16x - 12 = 180
16x = 192
x= 12
Hi there!
This is an example of supplementary angles, angles that sum up to 180° (they form a straight line).
Summing these two angles up equals 180°, so:
180° = (10x - 20)° + (6x + 8)°
We can drop the ° sign for ease of solving.
180 = 10x - 20 + 6x + 8
Combine like terms:
180 = (10x + 6x) - (20 + 8)
180 = 16x - 12
Add 12 to both sides:
192 = 16x
Divide both sides by 16:
192/16 = 16x/16
x = 12°
Which undefined geometric term is described as a two-dimensional set of points that has no beginning or end? a;line b;distance c;plane
Answers
Answer:
I believe that it is a line, since a line is infinite
Step-by-step explanation:
The following selected information was extracted from the records of B Solomon.
1. B Solomon, the owner of Solomon Traders, bought a new Machine for R250 000 on 1 July 2013.
2. On 1 October 2014, he purchased a second Machine for R350 000 cash.
3. On 30 June 2015, the Machine bought during 2013 was sold for R120 000 cash.
4. It is the business’ policy to depreciate Machines at 20% per annum on cost.
REQUIRED:
Prepare the following ledger accounts reflecting all applicable entries, in the books of Solomon Traders, properly balanced/closed off, for the years ended 31 March 2016:
1.1. Accumulated depreciation.
1.2. A Machines realisation.
NB: Show all calculations as marks will be awarded for calculations.
Answers
1.1. Accumulated depreciation:
The accumulated depreciation for the machine bought on 1 July 2013 would be R150,000 as of 31 March 2016.
1.2. Machine realization:
The machine bought in 2013 was sold for R120,000 on 30 June 2015, resulting in a profit/loss on the sale of R10,000.
1.1. Accumulated Depreciation:
To calculate the accumulated depreciation, we need to determine the annual depreciation expense for each machine and then accumulate it over the years.
Machine bought on 1 July 2013:
Cost: R250,000
Depreciation rate: 20% per annum on cost
Depreciation expense for the year ended 31 March 2014: 20% of R250,000 = R50,000
Depreciation expense for the year ended 31 March 2015: 20% of R250,000 = R50,000
Depreciation expense for the year ended 31 March 2016: 20% of R250,000 = R50,000
Accumulated depreciation for the machine bought on 1 July 2013:
As of 31 March 2014: R50,000
As of 31 March 2015: R100,000
As of 31 March 2016: R150,000
1.2. Machine Realisation:
To record the sale of the machine bought in 2013, we need to adjust the machine's value and the accumulated depreciation.
Machine's original cost: R250,000
Accumulated depreciation as of 30 June 2015: R100,000
Net book value as of 30 June 2015:
R250,000 - R100,000 = R150,000.
On 30 June 2015, the machine was sold for R120,000.
Realisation amount: R120,000
To record the sale:
Debit Cash: R120,000
Debit Accumulated Depreciation: R100,000
Credit Machine: R250,000
Credit Machine Realisation: R120,000
Credit Profit/Loss on Sale of Machine: R10,000 (difference between net book value and realisation amount).
These entries will reflect the appropriate balances in the ledger accounts and properly close off the accounts for the years ended 31 March 2016.
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A certain region of America with over 500,000 households has a mean household income of $70,000 with a standard deviation of $20,000. Economists plan to take random samples of 625 households and calculate the sample mean income -x for each sample.
Calculate the mean and standard deviation of the sampling distribution of -x.
Answers
The mean and the standard deviation of the sampling distribution of x are given as follows:
Mean: $70,000.Standard deviation: $800.How to obtain the mean and the standard deviation?The mean and the standard deviation of the sampling distribution of x are obtained using the Central Limit Theorem.
The mean is the same as the population mean, hence it is given as follows:
$70,000.
The standard deviation is given by the population standard deviation divided by the square root of the sample size, hence:
20000/25 = $800.
(as 25 is the square root of 625).
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1 3/4 = divided by 4
Answers
Answer:
7/16
Step-by-step explanation:
1 3/4 = 7/4
(7/4) / 4 = 7/4 * 1/4
7/16
Answer:
\(1\frac{3}{4}\) ÷ 4 = \(\frac{7}{16}\)
\(1\frac{3}{4}\) = 7 ÷ 4
Step-by-step explanation:
If a is half b , and b is twice c , then a:c=
Answers
Answer: a/c = 1
a/b = 1/2 => a = 1/2 .b
b/c = 2 => c = 1/2 .b
=> a/c = (1/2.b)/(1/2.b) = 1
Step-by-step explanation:
If a is half b, and b is twice c, then the fraction a:c will be 1.
What is a fraction?In such a fraction, the value that appears above the horizontal line is referred to as the numerator.
In another word, if we divide two numbers by each other then the upper word is called the numerator, and the lower word is called the denominator.
As per the given,
a is half b ⇒ a = b/2
b is twice c ⇒ b = 2c
By substitution,
a = (2c)/2
a = c
a:c = 1:1 = 1
Hence "If a is half b, and b is twice c, then the fraction a:c will be 1".
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I need help , any of u guys have the answer?
Answers
(x to the power of 2+1)+(5-x)
first, u keep x to the power of two because there are no like terms, and then you combine the like terms 1 and 5 to get 6, then you subtract x
therefore, the answer is x squared minus x plus 6
Ed Moura has $17000 invested in stocks paying 6%. How much additional money should he invest in certificates of deposit paying 3% so that the average return on the two investments is 4%?
Answers
Answer:
34,000
Step-by-step explanation:
0.06(17,000) + 0.03b = 0.04(b + 17,000)
1020 + 0.03b = 0.04b + 680
0.04b-0.03b=1020-680
0.01b = 340
b = 34,000
1.) Solve the following equation for w: 3w-4(w-3) = 6
Answers
Answer: w=6
Step-by-step explanation: 1. Simplify. Distribute the -4 to the w and the -3. -4*w is -4w and -4*-3 is +12, so your left with 3w-4w+12=6.
2. simplify again. 3w-4w is -w.
3. -w+12=6. Subtract w to both sides, so its -w=-6. The negatives cancel out, so w just equals 6.
Which product is positive?
I NEED THE ANSWER ASAP
Answers
Answer:
D
Step-by-step explanation:
the others have a odd number of negatives.
can i have brainliest?
2/5 of employees in a company drive to work, 1/3 travel by bus and the rest walk. 1. Find the fraction of who walk.
Answers
Answer:
4/15
Step-by-step explanation:
2/5 drive
1/3 bus
and rest walk
fraction of those who walk is 1-(2/5+1/3)
2/5+1/3=(6+5)/15=11/15
15/15-11/15=4/15
(3- 2x + 2x²) - (4x -5 +3x²)
Answers
Answer:
−x2−6x+8
Step-by-step explanation:
1,Rearrange terms
2.Distribute
3.Add the numbers
4.combine like terms
hope this helps i lfet some steps for you!!!<3333
please help!! need it fast, will give brainliest!! and pls show work !!
Find the measure of angle AEB
Answers
Answer:
An acute angle
Step-by-step explanation:
An acute angle is smaller than an obtuse ad right angle.
hope this helps and hope it was right 'cause I really don't know what you meant. :)
plzzzz answer :) :)
Answers
Answer:
\(5\frac{2}{5}\)
Step-by-step explanation:
Turn 2 7/10 to an improper fraction
2 7/10 = 27/10
27/ 10 divided by 1/2 is the same as multiplying 27/10 by the reciprocal of 1/2
27/10 * 2 = 5 2/5
The answer is \(5\frac{2}{5}\)
Hope this helps :)
Have a spectacular day!
Answer:
54/10 or 5 4/10
Step-by-step explanation:
2 7/10 ÷ t
t=1/2
2 7/10 ÷ t
2 7/10 ÷ 1/2
27/10 *2/1
54/10