a) The probability that the student is male is 60/100 or 0.6.
b) The probability that the student prefers basketball or baseball is (18 + 33)/100 or 0.51.
c) The probability that the student is female or prefers tennis is (40 + 21)/100 or 0.61.
d) Given that the person selected is male, the probability that he prefers basketball is 16/60 or 0.27.
a) To find the probability that the student is male, we divide the number of male students (60) by the total number of students (100), resulting in 60/100 or 0.6.
b) To find the probability that the student prefers basketball or baseball, we sum up the frequencies for basketball and baseball (18 + 33) and divide it by the total number of students (100), resulting in (18 + 33)/100 or 0.51.
c) To find the probability that the student is female or prefers tennis, we sum up the frequencies for female and tennis (40 + 21) and divide it by the total number of students (100), resulting in (40 + 21)/100 or 0.61.
d) Given that the person selected is male, we look at the row for males and find the frequency for basketball, which is 16. We divide it by the total number of male students (60), resulting in 16/60 or 0.27.
Understanding probabilities in this context helps us analyze the distribution of preferences within the class, providing insights into the interests and tendencies of the students.
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Complete question is in the image attached below
Anna is making a sculpture in the shape of a triangular prism the triangular bases have sides of length 10m,10m, and 12m and a height of 8m she wants to coat the sculpture in a special finsh that will preserve it longer if the sculpture is 5m thick what is the total area she will have to cover with the finsh?
A. 48m squared
B. 96m squared***
C. 256m squared
D. 480m squared
Just checking my answers pls help
The total area she will have to cover with the finish is 265 m². Option C
How to determine the areaThe formula for calculating the total surface area of a triangular prism is;
A = bh + ( b₁ + b₂ + b₃ )l
Such that the parameters are;
b is the base of a triangular faceh is the height of a triangular faceb₁ + b₂ + b₃ are the lengths of the basel is the lengthSubstitute the values, we have;
Area = 12(8) + (10 + 10 + 12)5
Multiply the values, we have;
Area = 96 + 32(5)
Area = 96 + 160
add the values
Area = 265 m²
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How to convert mC to c?
To convert millicoulomb (mC) to coulomb (C) divide C by 1000.
What is electric charge?
Subatomic particles have a characteristic known as "electric charge" that makes them experience force while in an electric and magnetic field.
Protons and electrons are the most prevalent charge carriers for the positive and negative forms of electric charges, respectively.
The coulomb is used to measure electric charge.
"The amount of charge transported in one coulomb in one second."
The definition of a coulomb is expressed mathematically as -
Q = I · t
In the equation, Q is the electric charge, I is the electric current and t is the time.
1 coulomb of charge consists of 1000 millicoulomb charge.
To convert millicoulomb to coulomb use the formula -
mC = C/1000
So, 1 Millicoulomb [mC] = 0.001 Coulomb [C].
Therefore the value of 1 mC is 0.001 C.
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When conducting a scientific investigation, how many variables should be tested?.
An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist.
In mathematical modeling, statistical modeling, and experimental sciences, there are dependent and independent variables. Dependent variables get their name because, during an experiment, their values are investigated under the presumption or requirement that they are dependent on the values of other variables due to some law or rule.
The variable you alter, regulate, or change in an experimental study to examine its effects is known as an independent variable. It is named "independent" because it is unaffected by any other study variables.
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Given a triangle with two sides that measure 6 m and 10 m and the included angle measuring 35°, what would be the area? Round answer to the nearest tenth.
The area of the triangle is
m2.
Answer:
89 degrees
Step-by-step explanation:
6 pi 10m divided by 35. The rombos formla.
Please help for ten points
Answer:
choice 2
Step-by-step explanation:
the best choice for the baby pool is choice 2 because they need a pool that hold less than 15 cubic feet water and choice 2 when i calculate the volume of the given number : 4ft*3ft*1=12 cubic feet which is less than 15 cubic feet.
the other choices show that the volume of choice 1 : 5ft*5ft*1=25 cubic feet which is greater than what they ask for.
choice 3 : 4ft*4ft*2ft=16 cubic feet greater than 15 cubic feet
Thomas loaned $6,250 to Cameron at a simple interest rate of 4.12% p.a. for 2 years and 6 months. Calculate the amount of interest charged at the end of the term. Round to the nearest cent
The amount of interest charged at the end of the term is approximately $644.75.
To calculate the amount of interest charged at the end of the term, we can use the simple interest formula:
Interest = Principal * Rate * Time
Principal = $6,250
Rate = 4.12% = 0.0412 (decimal form)
Time = 2 years + 6 months = 2.5 years
Plugging in these values into the formula, we have:
Interest = $6,250 * 0.0412 * 2.5
Calculating this expression:
Interest = $6,250 * 0.0412 * 2.5 = $644.75
Therefore, the amount of interest charged at the end of the term is $644.75 (rounded to the nearest cent).
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Claire and Dale shopped at the same store. Claire bought 5 kg of apples and 2 kg of bananas and paid altogether $22. Dale bought 4 kg of apples and 6 kg of bananas and paid altogether $33. Use matrices to find the cost of 1 kg of bananas?
The cost of 1 kg of bananas solved using matrices is $38.5.
Given,
Claire and Dale shopped at the same store.
Claire bought 5 kg of apples and 2 kg of bananas and paid altogether $22.
Dale bought 4 kg of apples and 6 kg of bananas and paid altogether $33.
We need to find the cost of 1 kg of bananas using matrices.
Let x be the cost of 1 kg of apples and y be the cost of 1 kg of bananas.
According to the question, we can form the following matrix equation:
⇒ \([5 2][x y] = 22[4 6][x y] = 33\)
Using matrix multiplication, we get:
⇒ \(5x + 2y = 22\)
(i) ⇒ \(4x + 6y = 33\)
(ii)Multiplying equation (i) by 3, we get:
⇒ \(15x + 6y = 66\)
(iii)Multiplying equation (ii) by -5, we get:
⇒ \(-20x - 30y = -165\)
(iv)Now, adding equations (iii) and (iv), we get:
⇒ \(-5x = -99\)
⇒\(x = 19.8\)
Substituting the value of x in equation (i), we get:
⇒ \(5(19.8) + 2y = 22\)
⇒ \(99 + 2y = 22\)
⇒ \(2y = 22 - 99\)
⇒ \(2y = -77\)
⇒ \(y = -38.5\)
Therefore, the cost of 1 kg of bananas is $38.5.
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Guys I need help plz and can you show work also thx
Answer: first problem 3rd choice The graph shifts vertically up 5 units
11.) the y intercept is -5
19.) f(-8) = -18
last item third choice All real numbers such that are ≥ 0 and ≤ 40
Step-by-step explanation:
19.) f(x)=2(-8 -3) + 4
2 (-11) + 4
-22 + 4
f(-8) = -18
What is the decimal equivalent of 9.7x10^5
A. 0.000097
B. 970,000
C. 9,700,000
D. 97,000,000
Answer:
B. 970,000
Step-by-step explanation:
Move the decimal 5 places to the right, since the exponent is a positive 5.
9.7 x 10⁵ = 970,000.
If it is a negative exponent, you would have to move the decimal to the left.
The school that Shawna goes to is selling tickets to a spring musical. On the first day of ticke sales the school sold 7 adult tickets and 7 student tickets for a total of $91. The school took ir $170 on the second day by selling 14 adult tickets and 12 student tickets. Find the price of an adult ticket and the price of a student ticket.
Answer:
price of an adult ticket = a = $7
price of a student ticket = s = $6
Step-by-step explanation:
price of an adult ticket = a
price of a student ticket = s
7a + 7s = 91 (1)
14a + 12s = 170 (2)
Multiply (1) by 2
7a + 7s = 91 (1) × 2
14a + 14s = 182 (3)
14a + 12s = 170 (2)
Subtract (2) from (3) to eliminate x
14s - 12s = 182 - 170
2s = 12
s = 12/2
s = 6
Substitute s = 6 into (1)
7a + 7s = 91 (1)
7a + 7(6) = 91
7a + 42 = 91
7a = 91 - 42
7a = 49
a = 49/7
a = 7
price of an adult ticket = a = $7
price of a student ticket = s = $6
The Area of a Rectangle is 40. The width is 2 less than 3
times the length. Find the width.
O 10
O 12
O 15
O 14
Answer:
Width = 10
Step-by-step explanation:
let length = X
width = 3X - 2
Area = length x width
40 = X x (3X - 2)
40 = 3X^2 - 2X
therefore 3X^2 - 2x - 40 = 0
3x^2 + 10x - 12x - 40 = 0
x(3x + 10) - 4(3x + 10) = 0
(x - 4) (3x + 10) = 0
(x - 4) = 0
x = 4
(3x + 10) = 0
3x = - 10
x = -10/3
Since the lenght can't be negative, we'll work with x = 4
Therefore the width = 3x - 2
Width = 3(4) -2
Width = 12 - 2
Width = 10
Could someone explain
Answer:
top one =75
bottom one=65
Step-by-step explanation:
all angles should equal to 180
so 180-40=140
the sum of th eother two angles will be 140
so 4x-5+3x+5=140
now solve for x
x=20
subsitute for x
4(20)-5=75
3(20)+5=65
please mark brainliest if correct
A 12 foot ladder is leaning up against the side of a building. The bottom of the ladder is 4 feet away from the bottom of the building Approximately how high up the side of the building does the ladder reach? 8 ft 10 ft 11 ft 12 ft
You can use the Pythagoras theorem for this since a right triangle is formed.
\(c^2 = a^2 + b^2\)
C = 12
A = 4
B = x
Input values:
\(12^2 = 4^2 + x^2\)
\(144 = 16 + x^2\)
\(128 = x^2\)
\(x = \sqrt{128}\)
\(x = 11.3137...\)
So, about 11ft.
It is recommended that one fire extinguisher be available for every 6,000 square feet inside a building. a school superintendent is working to determine the number of fire extinguishers needed for a school building that has a floor plan with 132,000 square feet. let the variable x represent the number of fire extinguishers.
Solve for d.
d+ 4 = 16.21
d=
Answer:
d = 12.21
Step-by-step explanation:
1) Subtract 4 from both sides.
d = 16.21 - 4
2) Simplify 16.21 - 4 to 12.21.
d = 12.21
Check the answer!
⇒ d + 4 = 16.21
1. Let d = 12.21.
⇒ 12.21 + 4 = 16.21
2. Simplify 12.21 + 4 to 16.21
16.21 = 16.21
Done!
Thanks,
Eddie
How long would it take R20000 invested today at a simple interest rate of 9% p.a. to reach an investment goal of R30000.
A Approximately 5.6 years
B Approximately 6.1 years
C Approximately 4.7 years
D Approximately 5.1 years
\(~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$ 30000\\ P=\textit{original amount deposited}\dotfill & \$20000\\ r=rate\to 9\%\to \frac{9}{100}\dotfill &0.09\\ t=years \end{cases} \\\\\\ 30000 = 20000[1+(0.09)(t)] \implies \cfrac{30000}{20000}=1+0.09t\implies \cfrac{3}{2}=1+0.09t \\\\\\ \cfrac{3}{2}-1=0.09t\implies \cfrac{1}{2}=0.09t\implies \cfrac{1}{2(0.09)}=t\implies 5.6\approx t\)
20 PTS! Please Help!!!! Will Give Brainliest!! This is a Khan Academy Problem!!!
Find the approximate perimeter of pentagon ABCDE plotted below. A(0,7) B(6,0) C(3,-4) D(-3,-4) E(-6,0)
Using it's concept, the approximate perimeter of pentagon ABCDE is given as follows:
34.4 units.
What is the perimeter of a figure?The perimeter of a figure is given by the sum of the lengths of it's outside dimensions.
In this problem, the vertices are in a coordinate-plane, hence the distances are found using the formula for the distance between two points.
What is the distance between two points?Suppose that we have two points, \((x_1,y_1)\) and \((x_2,y_2)\). The distance between them is given by:
\(D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)
The length of segment AB is:
\(AB = \sqrt{(6 - 0)^2+(0 - 7)^2} = 9.2\)
The length of segment BC is:
\(BC = \sqrt{(6 - 3)^2+(0 + 4)^2} = 5\)
The length of segment CD is:
\(CD = \sqrt{(-3 -3)^2+(-4 + 4)^2} = 6\)
The length of segment DE is:
\(DE = \sqrt{(-6 + 3)^2+(0 + 4)^2} = 5\)
The length of segment EA is:
\(EA = \sqrt{(-6 +0)^2+(0 - 7)^2} = 9.2\)
Hence the perimeter is:
P = AB + BC + CD + DE + EA = 9.2 + 5 + 6 + 5 + 9.2 = 34.4 units.
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Jocelyn estimates that a piece of wood measures 5.5 cm. If it actually measures 5.62 cm, what is the percent error of jocelyns estimate?
Answer:
12%
Step-by-step explanation:
So 5.5 to 5.62 is .12
Then calculate the difference of 5.5 *.12=0.66
Then do “0.66 is what percent of 5.5?”
The answer is 12%
Thank you for reading, and mark this brainliest
The equation has four solutions, A < B < C < D. Find their sum, A+B+C+D, rounded to two decimal places.
The sum, A+B+C+D is 0.00.
The equation is:
\(x^4\) - \(x^3\) - 2\(x^2\) - x + 1 = 0
We can factor the equation as follows:
(x - 1)(\(x^3\) + \(x^2\) + x - 1) = 0
The first factor gives us the solution x = 1. The second factor gives us the solutions x = -1, x = -1/2, and x = 1/2.
Therefore, the four solutions are A = 1, B = -1, C = -1/2, and D = 1/2. Their sum is:
A + B + C + D = 1 + (-1) + (-1/2) + (1/2) = 0
Rounded to two decimal places, the sum is 0.00.
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I need help with trigonometry hw
Answer
See in pic
Step-by-step explanation:
Please answer please I need it today, if you show ur answer and solution then i'll make you the brainliest
Answer:
1) 0.3
2) 12
3a) 5/6
3b) 4/5
Step-by-step explanation:
1) There are;
12 white balls, 6 green balls and 2 red balls.
Total number of balls = 12 + 6 + 2 = 20
Probability of selecting a green ball at random = 6/20 = 3/10 = 0.3
2) we are told that number of marbles is 28 marbles.
Now, theoretical probability of drawing a blue marble = 3/7
This fraction is; number of favorable outcomes/number of possible outcomes.
Thus;
Number of blue marbles = 3/7 × 28 = 12 blue marbles
3a) theoretical probability is what we expect to happen.
There are 5 numbers less than 6 in the table.
Thus;
Theoretical probability of getting a number less than 6 in the next throw = 5/6
3b) Experimental probability is what actually happens.
Number of times a number less than 6 appears = 6 + 4 + 7 + 11 + 12 = 40 times
There was a total of 50 trials. Thus;
Experimental probability of getting a number less than 6 in the next throw = 40/50 = 4/5
Solve for x. Figures are not necessarily drawn to scale.
Check the picture below.
\(\cfrac{17.5+14}{17.5}~~ = ~~\cfrac{x}{12.5}\implies \cfrac{(17.5+14)(12.5)}{17.5}~~ = ~~x\implies 22.5=x\)
1. what is the height of the cone? Explain how you found the height.
2. Now that you have the height of the cone, how can you solve for the slant height, s?
3. Now that you have the height of the cone, how can you solve for the slant height, s?
1. The height of the cone is equal to
2. You can solve for the slant height, s by applying Pythagorean's theorem.
3. To get from the base of the cone to the top of the hill, an ant has to crawl 29 mm.
How to calculate the volume of a cone?In Mathematics and Geometry, the volume of a cone can be calculated by using this formula:
Volume of cone, V = 1/3 × πr²h
Where:
V represent the volume of a cone.h represents the height.r represents the radius.By substituting the given parameters into the formula for the volume of a cone, we have the following;
8792 = 1/3 × 3.14 × 20² × h
26,376 = 3.14 × 400 × h
Height, h = 26,376/1,256
Height, h = 21 mm.
Question 2.
In order to solve for the slant height, s, we would have to apply Pythagorean's theorem since the height of the cone has been calculated above.
Question 3.
By applying Pythagorean's theorem, we have the following:
r² + h² = s²
20² + 21² = s²
400 + 441 = s²
s² = 841
Slant height, s = √841
Slant height, s = 29 mm.
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Given the information below, estimate the total distance travelled during these 6 seconds using a left endpoint approximation.
time (sec) velocity(ft/sec)
0 13
1 23
2 24
3 15
4 4
5 1
6 10
Total distance traveled during these 6 seconds = 80 feets
Given the data in the question-
Time (sec) Velocity (ft/sec)
0 13
1 23
3 24
4 15
5 4
6 10
Since the distance traveled is shown by.
Distance = Velocity x Time
And since the time interval in the question is given = 1 sec between any two breaks,
By the principle of left-end approximation -
According to the left-end approximation, the velocity given at each equal interval is determined by the function value at the left of each subinterval.
(0,1) ---------------- f (0) = 13
(1,2) ---------------- f (1) = 23
(2,3) --------------- f (2) = 24
(3,4) --------------- f (3) = 15
(4,5) --------------- f (4) = 4
(5,6) --------------- f (5) = 1
Now if we observe the time break between two-time intervals = 1 sec
The expression will be derived as -
= (13 x 1) + (23 x 1) + (24 x 1) + (15 x 1) + (4 x 1) + (1 x 1)
= 13 + 23 + 24 + 15 + 4 + 1
= 80 feets
Therefore, the total distance traveled during these 6 seconds = 80 feets
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pls, hurry!!!!!!!
I will give brainliest to the one who finishes the table!
Answer: 1 is 77 3 is 231 5 is 308 and 7 is 385
Step-by-step explanation:
) find the number of ways to distribute 10 identical cards into 3 boxes, where each box has at least one card.
Numbers of ways to distribute 10 identical cards into 3 boxes is 36
Combination is is a way of selecting items from a collection where the order of selection does not matter.
Formula of combination:
Let a x-combination of a set is a subset of x distinct elements of S. If the set has n elements, the number of x-combinations is equal to the binomial coefficient.
ⁿCₓ = n(n-1)(n-2)(n-3). . . (n-x+1) / (x-1)(x-2)(x-3) . . . .(1)
which can be written as ⁿCₓ = n! / (n-x)! x! , when n > x
ⁿCₓ = 0 , when n < x
Where n = distinct object to choose from
C = Combination
x = spaces to fill
According to the question,
Number of identical cards : n =10
Number of box cards are being distributed : x = 3
Number of ways to distribute when no condition is given : ⁿ⁺ˣ⁻¹Cₓ₋₁
If we place one one card in each box then
Number of cards left with us = 10 - 3
= 7
Now, condition of at least one cards in each box is satisfied ,
Then total number of ways to distribute 7 cards into 3 = ⁷⁺³⁻¹C₃₋₁
=> ⁹C₂ = 9! / (9 - 2)! 2!
=> 9×8×7! / 7!2!
=> 9×8/2
=> 9×4
=>36 ways
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Troy has 5/6 ounces of sprinkles to make cupcakes. The recipe uses 1/4 ounce per dozen of cupcakes. Write an expression which can be used to determine how many dozens of cupcakes Troy can make.
Help please? :)
Answer:
\(\frac{\frac{1}{4}}{1}=\frac{\frac{5}{6}}{x}\)
Step-by-step explanation:
Per = 1
\(\frac{1}{4}\)
So, if we were to solve:
\(\frac{1}{4}=\frac{5}{6x}\)
\(\frac{1}{4}\cdot \:6x=1\cdot \:5\)
\(\frac{3}{2}x=5\)
\(\frac{3}{2}x\cdot \:2=5\cdot \:2\)
\(3x=10\)
\(\frac{3x}{3}=\frac{10}{3}\)
\(x=\frac{10}{3}\)
Troy can make \(\frac{10}{3}\) dozen of cupcakes.
PLS ANSWER IN IMAGE BELOW!!
Answer:
y=4
Step-by-step explanation:
8y+1=6y+9
8y-6y=9-1
2y=8
y=4
The marked price of a book is Rs 2000. If it is sold at 15% discount and 25% profit, find the discount amount, selling price and cost price
The answer is a discount price: RS.300
Selling price: RS 1700
Cost price: RS 1500
The marked price is 2000
by applying the known mathematics
discount amount: 100 × (Original price - Discounted price) / Original price
=2000 × 15%
=300
selling price: Cost Price + Profit Margin.
=2000-300
=1700
cost price : {100/(100 + Profit%)} × SP.
=2000-2000×25%
= 1500
by these calculations, we can achieve our answers
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Use the figure at the right and the given information to tell wether line m and n are parallel number 11.
11. ∠7≅∠3 is true because alternate interior angles of two parallel lines cut by a transversal line are congruent.
12.∠7≅∠6 is not true because these two angles are supplementary to each other which means ∠7 + ∠6 = 180 degrees.
13. ∠3 and ∠1 are corresponding angles and corresponding angles are congruent.
m∠3 = m∠1
15x + 22 = 19x - 10
15(8) + 22 = 19(8) - 10
120 + 22 = 152 - 10
142 = 142
Since both m∠3 and m∠1 gave us the same measure of the angle which is 142 degrees, this proves that corresponding angles in this figure are congruent. Therefore, #13 is true.
Since ∠7≅∠3 and m∠3 = m∠1, lines m and n are parallel.