miss rose teaches three ballet classes. her students' data are shown in the relative frequency table. which statement is true?
A. 20% of her students are in the intermediate class.
B. 25% of her students are in the beginner class.
C. 60% of her students are boys.
D. 15% of her students are girls.
Hi! I need help solving this practice problem. Thank you
Given
Function g(x)
Find
Graph the function
Explanation
as we have given
for
\(\begin{gathered} x\in[-2,-1),g(x)=-3 \\ x\in[-1,0),g(x)=-2 \\ x\in[0,1),g(x)=-1 \\ x\in[1,2),g(x)=0 \end{gathered}\)where [ ] indicates closed interval
( ) indicates open interval
Final Answer
the graph of the function
While viewing a herd of cattle on a ranch, Herbert estimated that there were 750 cattle in the herd. The actual number of cattle in the herd was 600.
What was the percent of error, rounded to the nearest percent?
15%
20%
25%
30%
The solution is, the percent of error, rounded to the nearest percent is 25%.
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100. A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used. A percentage is a dimensionless number; it has no unit of measurement.
here, we have,
given that,
While viewing a herd of cattle on a ranch, Herbert estimated that there were 750 cattle in the herd.
The actual number of cattle in the herd was 600.
now, we have to find the percent of error, rounded to the nearest percent.
so, we get,
Herbert estimated that there were 750 cattle in the herd.
The actual number of cattle in the herd was 600.
so, error = 750 - 600
= 150
so, we get,
the percent of error = 150 * 100 / 600
= 25%
Hence, The solution is, the percent of error, rounded to the nearest percent is 25%.
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solve the system by elimination 4x-y=2 and x+3y=7
Answer:
x=1 y=2
Step-by-step explanation:
Isolate x for 4x -y=2: X=2+y/4
Substitute x= 2+y/4
(2+y/4 )+3y=7
simplify 2+13y/4=7
Isolate y for 2+13y/4=7
y=2
Forx= 2+y/4
Substitute y = 2
x= 2+2/4
Simplify
X=1
PLS HELP
Megan has two spinners. Spinner 1 is divided into 6 equal parts. Spinner 2 is
divided into 4 equal parts.
Spinner 1
Spinner 2
2
Blue
Yellow
الما
6
6
Red
Green
5
If she spins both spinners, what is the probability that Spinner 1 will land on 4
and Spinner 2 will land on Blue?
01/24
01/12
1/6
1/2
Answer:
its either 1/2 of 1/6.........
Answer:
1/24
Step-by-step explanation:
Spinner 1's probability is 1/6
Spinner 2's probability is 1/4
You would multiply the denominators to find that the probability is 1/24
What is the area of the trapezoid?
Answer:
36 cm
Step-by-step explanation:
What is the name of the property for : a + ( − a ) = 0 ?
Answer:
Inverse Property of Addition
Step-by-step explanation:
Mr. Ahamad's science class is studying blood types. The table below shows the probability that a person living in the US has a particular blood type.
The probability that the three randomly selected students will have blood types A, B and AB is given as follows:
0.00164 = 0.164%.
How to calculate a probability?The parameters that are needed to calculate a probability are listed as follows:
Number of desired outcomes in the context of a problem or experiment.Number of total outcomes in the context of a problem or experiment.Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.
Hence the probability for this problem is calculated as follows:
41/100 x 1/10 x 1/25 = 0.00164 = 0.164%.
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A commercial jet and a private airplane fly from Denver to Phoenix. It takes the commercial jet 1.2 hours for the flight, and it takes the private airplane 1.8 hours. The speed of the commercial jet is 170 miles per hour faster than the speed of the private airplane. Find the speed, in miles per hour, of both airplanes.
Both planes have a speed of 340 miles per hour and 510 miles per hour, respectively.
What is equation?In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical statement made up of two expressions joined by an equal sign is known as an equation. 3x - 5 = 16 is an example of an equation. We get the value of the variable x as x = 7 after solving this equation.
Here,
Let tc be the time of commercial jet and tp be the time of private airplane.
Let vc be the speed of commercial jet and vp be the speed of private airplane.
Let dc be the distance of commercial jet and dp be the distance of private airplane.
now,
dc=dp
vc=vp+170
vc*tc=vp*tp
(vp+170)*1.2=vp*1.8
(vp+170)*2=vp*3
2vp+340=3vp
vp=340 miles/hour
vc=340+170
vc=510 miles/ hour
The speed, in miles per hour, of both airplanes is 340 miles per hour and 510 miles per hour.
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An item originally priced for $42.39 is on sale for 20% off. What is the discounted price of the item?
$33.91
$52.98
$21.19
$8.48
Answer:$33.91
Step-by-step explanation: 20% = 0.2
42.39 x 0.2 = 8.48 (rounded up to nearest hundredth)
42.39 - 8.48 = $33.91
When 8 is added to four times a number the result is 80 find the number
Answer:
18
Step-by-step explanation:
8+4x=80
4x=72
x=18
Check
8+4x=80
8+4(18)=80
8+72=80
80=80
Compare the process of solving
|x – 1| + 1 < 15 to that of solving
|x – 1| + 1 > 15.
The solutions to the inequalities are -13 < x < 15 and x > 15 and x < -13
How to compare the process of solving |x – 1| + 1 < 15 to that of solving |x – 1| + 1 > 15?The inequality expressions are given as:
|x – 1| + 1 < 15
|x – 1| + 1 > 15
We start by solving the inequality expression |x – 1| + 1 > 15
So, we have
|x – 1| + 1 < 15
Subtract 1 from both sides
|x – 1| < 14
Remove the absolute bracket
x – 1 < 14 or x - 1 > -14
This gives
x < 15 and x > -13
Combine the inequalities
-13 < x < 15
We then continue by solving the inequality expression |x – 1| + 1 < 15
So, we have
|x – 1| + 1 > 15
Subtract 1 from both sides
|x – 1| > 14
Remove the absolute bracket
x – 1 > 14 or x - 1 < -14
This gives
x > 15 and x < -13
Hence, the solutions to the inequalities are -13 < x < 15 and x > 15 and x < -13
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Conner has 3 3/8 bags of mulch. if each bag covers 12 1/2 square feet , how many square feet can he cover?
Answer:
42 square feet???
42.1875 square feet of the area can be covered by a given number of mulch bags.
Given that, Conner has 3 3/8 bags of mulch and each bag covers 12 1/2 square feet.
What is a unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Now, 3 3/8 = 27/8 and 12 1/2=25/2
Total area = Number of bags of mulch × Area covered by each bag of mulch
=27/8 × 25/2
=675/16
=42.1875 square feet
Therefore, 42.1875 square feet of the area can be covered by a given number of mulch bags.
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I need help with this precalculus question. Please help
A small airplane can carry less
than 840 pounds of luggage and
mail. The mail for the day weighs
480 pounds. If each passenger
brings 60 pounds of luggage,
what is the greatest possible
number of passengers that can
be taken?
A recipe calls for 2 cup of brown sugar for every 6 cups of white sugar. How many cups of brown sugar are required for every 12 cups of white sugar?
(PLEASE HELP!!)
There are 4 cups of brown sugar are required for every 12 cups of white sugar.
A recipe calls for 2 cups of brown sugar for every 6 cups of white sugar. We can set up a proportion to find the relationship between the two quantities:
2 cups brown sugar / 6 cups white sugar = x cups brown sugar / 12 cups white sugar
To find the number of cups of brown sugar required for 12 cups of white sugar, we can cross-multiply and then solve for x:
2 cups brown sugar × 12 cups white sugar = 6 cups white sugar × x cups brown sugar
24 cups brown sugar = 6x cups brown sugar
x = 24/6
x = 4
So, 4 cups of brown sugar are required for every 12 cups of white sugar.
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What percent of 0.2 gram of 32 mg
Answer:
625
Step-by-step explanation:
First, you have to convert 0.2 grams to mg. To do this, multiply 0.2 by 1000. This yield 200. Now 200 is what percent of 32.
200 * 100 / 32
= 625
A tank in the shape of a hemisphere has a diameter of 10 feet. If the liquid that fills the tank has a density of 74.4 pounds per cubic foot, what is the total weight of the liquid in the tank, to the nearest full pound?
Step 1
State the volume of a hemisphere.
\(v=\frac{2}{3}\pi r^3\)Where;
\(\begin{gathered} r=\frac{diameter}{2}=\frac{10}{2}=5ft \\ \end{gathered}\)Step 2
Find the volume of the hemisphere
\(v=\frac{2}{3}\times\pi\times5^3=\frac{250\pi}{3}ft^3\)Step 3
Find the total weight of the liquid in the tank
\(\begin{gathered} \text{Density}=\frac{mass}{\text{volume}} \\ 74.4=\frac{mass}{\frac{250\pi}{3}} \\ \text{mass}=19477.87445lb \\ \text{mass}\approx19478lb \end{gathered}\)Hence the total weight of the liquid in the tank to the nearest full pound = 19478lb
Enter a positive common factor (other than 1) of 15 and 10
A recent testing survey showed ¼ of all people surveyed preferred baking soda toothpaste to regular toothpaste. If 28,000 people were in the survey, how many favored regular toothpaste?
Answer:
21,000 people preferred regular toothpaste
Step-by-step explanation:
28,000x1/4= 7000
7,000 people preferred baking soda toothpaste
28,000-7,000=21,000
The volume of a cuboid is 540cm³. The length is 6cm and the width is 150mm. Work out the height of the cuboid in cm.
Step-by-step explanation:
To work out the height of the cuboid, we need to use the formula:
Volume = Length x Width x Height
We have been given the volume and the length, so we can substitute those values into the formula:
540 = 6 x Width x Height
Now we need to convert the width from millimeters to centimeters, so we divide it by 10:
150mm ÷ 10 = 15cm
Substituting this value into the formula:
540 = 6 x 15 x Height
Simplifying:
540 = 90 x Height
Dividing both sides by 90:
6 = Height
Therefore, the height of the cuboid is 6cm.
x/ -5 > =-6 please help me out
Answer:
\(x \leqslant 30\)
\( \frac{x}{ - 5} > = - 6\)
Answer :\( \frac{x}{ - 5} \div 6 = \)
\( = x < 30\)
A school needs 7,180 notebooks for next year. If the notebooks come in sets of 5, how many
sets should the school buy?
sets
John has $90 in the bank. Every time herides the bus he spends
$2.50. Write an equation that John can use to see how many times
he can ride the bus. Let x = the number of times he can ride the bus.
Answer:90 divided by 2.50= X
36 = X
Step-by-step explanation:
please help me with this on the image
Answer:
ik only 1 of them and i dont even know if this is correct...
a) A
Which of the following is false about the central limit theorem (CLT)? O If we take more samples from the original population, the sampling distribution is more likely to be nearly normal. O If the population distribution is normal, the sampling distribution of the mean will also be nearly normal, regardless of the sample size. O As the sample size increases, the sampling distribution of the mean is more likely to be nearly normal, regardless of the shape of the original population distribution. O The CLT states that the sampling distribution will be centered at the true population parameter.
Only the first statement is false. The rest are true statements about the Central Limit Theorem.
The Central Limit Theorem (CLT) is a fundamental theorem in probability and statistics which states that, given a sufficiently large sample size from a population with a given mean and standard deviation, the sampling distribution of the mean will be nearly normal, regardless of the shape of the original population distribution.
It is important to note that the first statement presented is false. Taking more samples from the population will not necessarily result in a more normal sampling distribution. The CLT does not guarantee that the sampling distribution will be normally distributed, only that it is more likely to be so as the sample size increases.
The second statement is true. If the population distribution is normal, the sampling distribution of the mean will also be nearly normal, regardless of the sample size. The third statement is also true. As the sample size increases, the sampling distribution of the mean is more likely to be nearly normal, regardless of the shape of the original population distribution.
Finally, the fourth statement is also true. The CLT states that the sampling distribution will be centered at the true population parameter. This means that the mean of the sampling distribution will be equal to the mean of the population.
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Identify the volume of the pyramid.
21 in.
8 in.
7 in.
What line passes
through the points
(1, -3) and (-5, 15).
Answer:
(6,0)
Step-by-step explanation:
K'
-8,8
,
L'
8,8
,
M'
-4,8
i need help finding the new coordinate. and scale factor is 1/2
Answer:
Step-by-step explanation:
To find the new coordinate of a point after it has been scaled by a factor of 1/2, you can multiply the x- and y-coordinates of the point by 1/2.
For example, to find the new coordinate of point K', you can multiply the x-coordinate of K' (-8) by 1/2 to get the new x-coordinate, and multiply the y-coordinate of K' (8) by 1/2 to get the new y-coordinate. This gives you the new coordinate of K' as (-4,4).
You can use the same method to find the new coordinates of points L' and M'. The new coordinate of L' is (4,4) and the new coordinate of M' is (-2,4).
I hope this helps! Let me know if you have any questions.
Math math math help help
Answer:
C. No -- Mitch's line is incorrect because he should draw it so that data points are above and below the trend line.
Explanation:
This is what is known as having a line of best fit. The data points should at least nearly be evenly distributed on both sides of the line for it to be a good line of best fit. You should also make sure that you have at least a few points TOUCHING the line. This is a majour part of having a line of best fit.
I am joyous to assist you at any time.
The answer is C. Hope this helps :)