Answer:
70%
Step-by-step explanation:
21 ÷ 30 = 0.7 = 70%
Please mark me Brainliest! :)
Answer:
Step-by-step explanation:
21/30 * 100 = percentage
Percentage = 70%
21 is 70% of 30
:D
Consider a sample with data values of 27, 24, 19, 14, 30, 35, 28, and 24. Compute the 20th, 25th, 65th, and 75th percentiles.
Answer:
20th percentile = 19
25th percentile = 21.5
65th percentile = 28
75th percentile = 30
Step by Step Explanation:
Computation for the 20th, 25th, 65th, and 75th percentiles
First step is to arrange sample with data values of 27, 24, 19, 14, 30, 35, 28, and 24 in Ascending order
Ascending order of given data
14,19,24,24,27,28,30,35
Now let Compute for the 20th, 25th, 65th, and 75th percentiles
Using this formula
I=P/100*n
Where,
n =8 given data values
Let plug in the formula
1. 20th PERCENTILE
20th PERCENTILE = (20/100) * 8
20th PERCENTILE= 1.6
20th PERCENTILE = 2 (rounded up to the nearest integer)
The 20th percentile is the 2th value in the given date that was arranged in ascending order which is 19
Therefore the 20th percentile is 19.
2. 25th PERCENTILE
25th PERCENTILE = (25/100) * 8
25th PERCENTILE= 2
To get the 25th percentile of 2 we would take the average of 2nd and 3rd value
25th PERCENTILE = (19 + 24)/2
25th PERCENTILE=43/2
25th PERCENTILE= 21.5
Therefore the 25th percentile is 21.5
3. 65th PERCENTILE
65th PERCENTILE = (65/100) * 8
65th PERCENTILE= 5.2
65th PERCENTILE= 6 (rounded up to the nearest integer)
The 65th PERCENTILE is the 6th value which is 28
Therefore 65th percentile is 28
4. 75th PERCENTILE
75th PERCENTILE = (75/100) * 8
75th PERCENTILE = 6
To get the 75th PERCENTILE of 6 we would take the average of 6th and 7th value
75th PERCENTILE = (28+30) / 2
75th PERCENTILE =58/2
75th PERCENTILE = 29
Therefore the 75th percentile is 30
Therefore the 20th, 25th, 65th, and 75th percentiles are:
20th percentile = 19
25th percentile = 21.5
65th percentile = 28
75th percentile = 30
TIMED QUIZ! possibly easy i just don’t get it. HELP
Max is driving 45 miles per hour. A dog runs into the street and Max reacts in about three quarters of a second. What is his approximate braking distance?
O about 101 feet
about 112 feet
O about 75 feet
O about 92 feet
What is the unit rate of store A?
•$0.75 / notebook
•$0.50 / notebook
•$0.80 / notebook
•None of the above
What is the unit rate of store B ?
•$0.60 / notebook
•$0.30 / notebook
•$0.55 / notebook
•None of the above
Which store has the better deal per notebook? *
•Store A
•Store B
•The unit rate is the same at both stores
STORE B BECAUSE LOW RATES IS BETTER THAN HIGH
What is the slope of the line below?
(4,5)
(-2,2)
Answer:
1/2 or one half
Step-by-step explanation:
Answer:
The slope is 1/2.
Step-by-step explanation:
To find the slope of a line, divide yB - yA by xB - xA.
(yB - yA)/(xB - xA)
(2 - 5)/ (-2 - 4)
-3/-6
Dividing two negatives make a positive.
0.5
The slope is 0.5, or 1/2.
Solve 3a – 8= 5a + 12
Show your work. (please)
Answer:
a = - 10
Step-by-step explanation:
3a – 8 = 5a + 12
3a – 8 + 8 = 5a + 12 + 8
3a = 5a + 20
3a - 5a = 5a + 20 - 5a
- 2a = 20
[tex]\dfrac{-2a}{-2}=\dfrac{20}{-2}[/tex]
a = - 10
so I have to take my keystone's soon even tho I have only half of the required material learned cuz of corona and I have to pass them to graduate so does anyone know a good app where I can study those topics
Find the value of the missing angles.
Answer:
t=62
w=37
v=118
Step-by-step explanation:
A rectangle measures 7.08 cm by 3.2 cm.
Work out the area of the rectangle.
Answer:
22.67 cm^2
Step-by-step explanation:
The computation of the area of the rectangle is shown below:
As we know that
Area of the rectangle = Length × breadth
Here we assume the length be 7.08 cm
Or breadth be 3.2 cm
Or if we assume them inverse like length be 7.08 cm and breadth be 3.2 cm
SO the area of the rectangle is
= 7.08 cm × 3.2 cm
= 22.67 cm^2
In the both cases the answer would be the same
In 1839, Georgia produced 326,000 bales of cotton . By 1860, the state produced 700,000 bales. What was the approximate percent of increase in the bales produced during that 21-year period?
Answer Choices .
46 percent
147 percent
4.7 percent
115 percent
The answer is 46 percent
For a submarine cable, the range of signalling is governed by the function
f(r) = r^2 ln(1/r)
where 0
Find df/dr.
Answer:
[tex]\frac{df}{dr} = (-r) + log(\frac{1}{r} )( 2 r)[/tex]
Step-by-step explanation:
Explanation
Given function f(r) = r² log r ....(i)
Apply derivatives formula
[tex]\frac{d}{dx} UV = U^{l} V + V^{l} U[/tex]
[tex]\frac{d}{dx}x^{n} = nx^{n-1}[/tex]
[tex]\frac{d}{dx}log x = \frac{1}{x}[/tex]
Differentiating equation (i) with respective to 'r' , we get
[tex]\frac{df}{dr} = r^{2} (\frac{1}{\frac{1}{r} } )\frac{d}{dr} (\frac{1}{r } )+ log(\frac{1}{r} ) 2 r[/tex]
[tex]\frac{df}{dr} = r^{2} (\frac{1}{\frac{1}{r} } )(\frac{-1}{r^{2} } )+ log(\frac{1}{r} ) 2 r[/tex]
Final answer:-
[tex]\frac{df}{dr} = (-r) + log(\frac{1}{r} )( 2 r)[/tex]
ramona has $21 that she can spend on food for her dog. dry dog food costs 7.50 per small bag
Answer:
Ramona can buy 2 bags.
Step-by-step explanation:
7.5 x 3 = 22.5. This is over her budget.
Therefore Ramona can buy 2 bags.
You didn't specify what the question was asking for, I'm guessing that this is it.
SU: ST is 4:1
picture below
Step-by-step explanation:
Length of SU to ST = 4 : 1.
=> (3m + 6) : m = 4 : 1
=> 3m + 6 = 4m
=> m = 6.
The radius of a circle is 4 kilometers. What is the circle's area?
r=4 km
Use 3.14 for .
square kildmeters
Submit
Answer:
50.27km
Step-by-step explanation:
divide the circumference by 3.14 ( pi ) to find the diameter of the circle. Half the diameter is the radius. Square the radius and multiply by pi to find the area of the circle.
Answer:
Step-by-step explanation:
Is this a function? Explain with full sentence!
[(3,2) (4,2) (5,2) (3,2)]
Answer:
yes
Step-by-step explanation:
so i was doing some serching online and i typed what does a function mean and this wat came up an activity or purpose natural to or intended for a person or thing. so as i was thinking this answer fits the description on what i was given from the internet
[tex]\frac{1}{2} x \frac{3}{4}[/tex]
Which graph represents the function
Answer:
The Fourth One.
The one with 3 lines, 1 intersecting the origin, one in quadrant 1, one in quadrant 3
hope it helps!
Passes through (-4,-5) Slope = -314
Please Helppppp!!!!!!!!!!!!
Answer:
[tex]y=-314x-1261[/tex]
Step-by-step explanation:
When we are writing an equation we have to put it in slope-intercept-form [tex]y=mx+b[/tex]. We already know the slope it's -314, we replace m with the slope. Now we have to find b which is the y-intercept. So what we have to do is plug in the ordered pair into the equation. -4 for x and -5 for y.
[tex]y=mx+b\\-5=-314(-4)+b[/tex]
Now we solve
[tex]-5=-314(-4)+b\\-5= 1256+b\\b=-1261[/tex]
So now that we know everything we need we plug in and....
[tex]y=mx+b\\y=-314x-1261[/tex]
we've got our equation!
Answer:
The line slants upward, so the slope is positive.
fiona´s laptop computer weighs 2.5 kilograms. What is the weight of the computer in grams?
Answer:
2,500 grams
Step-by-step explanation:
2.5 kilograms = 2,500
Therefore, the laptop is 2,500 kilograms.
hope i helped
Jeremy can tow 1/3 of a mile in 1/4 of an hour. What is the unit rate?
Answer:
1 1/3 - miles per hour.
Step-by-step explanation:
(1/3) / (1/4) =
(1/3) x (4/1) =
4/3 = 1 1/3
I NEED THE WORDS AND TERMS TO MATCH THE WORDS ILL GIVE YOU 50 POINTS AND BRAINILEST
Answer:
1 = 5
2 = 8
3 = 1
4 = 3
and
5 = 9
Step-by-step explanation:
If you have a 10% off coupon and you buy a 20$ shirt how much you pay with the coupon?
Answer:
18.00$
Step-by-step explanation:
Answer:
$18.00
Step-by-step explanation:
Thus, a product that normally costs $20 with a 10 percent discount will cost you $18.00, and you saved $2.00. You can also calculate how much you save by simply moving the period in 10.00 percent two spaces to the left, and then multiply the result by $20 as follows: $20 x .10 = $2.00 savings. Furthermore, you can get the final price by simply deducting .10 from 1 and multiplying it by $20 as follows: (1 - .10) x $20 = $18.00 final price.
Suppose that populations of men and women have the following summary statistics for their heights (in
centimeters):
Mean
Standard deviation
Men
HM = 172
M = 7.2
Women
Uw = 162
ow = 5.4
Both distributions are approximately normal. Suppose we randomly select a man and a woman from each
population, and calculate the difference between their heights. We can assume that their heights are
independent
Find the probability that the woman is taller than the man
You may round your answer to two decimal places
IN
P woman taller
Answer:
.13
Step-by-step explanation:
172-162 = 10
We can find the standard deviation of D by adding the variances of the heights and taking the square root:
σ
D
2
σ
D
2
σ
D
=σ
M
2
+σ
W
2
=7.2
2
+5.4
2
square root of 81
=9
Representing probability with area
When D= M-W =0, their heights are equal. When the man is taller, D is positive, and when the woman is taller, D is negative. Since we know the distribution of the difference D is normally distributed, the probability that the woman is taller than the man can be found by calculating the shaded area below D=0, in the corresponding normal distribution:
A standard normal curve is plotted on a horizontal axis representing D, that goes from negative 17 to 37. The mean, or mu sub D, = 10. The standard deviations, or sigma sub D = 9. The value 0 is marked. The area under the curve to the left of 0 is shaded, representing the probability that the woman is taller. The area to the right represents the probability that the man is taller.
normalcdf:
lower bound: −9999
upper bound: 0
μ=10
σ=9
Using subtraction of normal variables, it is found that there is a 0.1335 = 13.35% probability that the woman is taller than the man.
In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
It measures how many standard deviations the measure is from the mean. After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X. When two measures are subtracted, the mean is the subtraction of the means while the standard deviation is the square root of the variances.In this problem:
Men have mean weight of 172 cm, women of 162 cm, hence, for the distribution of the differences, the mean is [tex]\mu = 162 - 172 = -10[/tex].The standard deviation is the square root of the sum of the variances, hence [tex]\sigma = \sqrt{7.2^2 + 5.4^2} = 9[/tex]The probability of the women being taller is P(X > 0), which is 1 subtracted by the p-value of Z when X = 0.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{0 - (-10)}{9}[/tex]
[tex]Z = 1.11[/tex]
[tex]Z = 1.11[/tex] has a p-value of 0.8665.
1 - 0.8665 = 0.1335
0.1335 = 13.35% probability that the woman is taller than the man.
A similar problem is given at https://brainly.com/question/22934264
THIS IS 90 POINTS:
what is 15m+35 graphed?
Answer:
Factor
5
out of
15
m
+
35
.
5
(
3
m
+
7
)
Step-by-step explanation:
Factor the expression to fill in the blank:
24 + 32 = (3 + 4)
Answer:
8
Step-by-step explanation:
Mrs. Jones purchased 6.2 pounds of ground beef. She cooked 0.5 of the ground beef. How many pounds of ground beef did she cook?
Answer:
She cooked 3.1 pounds
Step-by-step explanation:
6.2 x 0.5 = 3.1
A ball is dropped from a height of 9 meters. On each bounce, it rises to 35% of its previous height.
When it hits the ground for the sixth time, how far has it traveled?
Round your answer to the nearest hundredth.
Can some one plz help i will give BRAINLIEST.
If there is a 10% chance of a certain flower species having blue petals, then is it possible to observe only 85 flowers with blue petals in a field of 1000 flowers? Explain your reasoning.
Answer:
Yes
Step-by-step explanation:
10% chance does not mean it is always 10 percent. 10 percent is the theoretical property. The experimental probability can be different than the theoretical property.
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
For a charity event, raffle tickets are printed such that they have a vowel (excluding ») as the first character and a
prime number less than 10 as the second digit. (Note that 1 is not a prime number.)
The probability that the winning ticket has the vowel contained in the word event and the digit is the number of
letters in the word event is 1/20 .
Reset
Next
Answer:
yes 1/20 is correct
Step-by-step explanation:
The probability that the winning ticket will have the letter e on it would be P=5%.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
P(E) = Number of favorable outcomes / total number of outcomes
For the probability of two independent events:
P(A and B) = P(A) P(B)
so we have to find the probability for each event to happen.
For a charity event, raffle tickets are printed such that they have a vowel (excluding ») as the first character and a prime number less than 10 as the second digit.
(Note that 1 is not a prime number.)
There are 5 vowels in the alphabet (a, e, i, o, and u).
Therefore the probability for the first letter to be e
P(A) = 1/5
We also know there are 4 prime numbers between 0 and 10 (2, 3, 5, 7)
so the probability for the number to be a 5 is:
P(B) = 1/4
Now, the probability of getting a ticket that starts with an e and ends with a 5
P(A and B) = P(A) P(B)
= 1/4 x 1/5
= 1/20
Therefore, the probability is 5%.
Learn more about probability here;
https://brainly.com/question/11234923
#SPJ5
4 + √2 divided by 3 - 5√2
Answer:
-2.59966329107
Step-by-step explanation:
3x=210 what's x equal
Answer:
x = 70
:-))
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