Answers
Number of medals to be awarded = 6
We have to distribute (arrange) the 6 medals among 28 students, so this is a problem of permutations. This means we have to find the permutations of 28 objects taken 6 at a time. This can be expressed as 28P6
[tex]28P6= \frac{28!}{22!} \\ \\ =271252800 [/tex]
This means, there are 271252800 ways to award the medals.
So, the correct option is C
Related Questions
Which expression represents "6 more than x"?
x - 6
6x
x + 6
6 - x
Answers
this is because + means more, so 6 more
square root 2x -5 =11
Answers
Ivanova has a healthcare plan with $25 co-pays to see doctors, $10 co-pays for prescription drugs, and an annual deductible of $1,500. In February she has a broken ankle which costs $2,300 in hospital treatment. As a follow-up in March she sees three doctors who bill $657, $134, and $232 and buys two prescriptions which cost $12 and $27. What is Ivanova's share of the costs for March?
Answers
$800+$75+$20=$895.
What value for s makes this equation true?
(6x10)+(6xs)=6x17
HELP ASAP
Answers
10 + s = 17
Subtract 10 from both sides of the equation to find the value of s.
s = 7
Suppose angle A is complementary to angle B, and angle B is supplementary to angle C. If measure of angle A is 21 degree, find measure of angle C.
Answers
Since A and B are complementary they add to 90. So we know that B must be 69 degrees.
Since B and C are supplementary they add to 180. So we know that C must be 111.
In solving this problem, we first identify that angle B is 69 degrees as it is complementary to 21-degree angle A (adding to 90 degrees). Then, we find angle C to be 111 degrees as it is supplementary to angle B (adding to 180 degrees).
Explanation:In this problem, we are told that angle A (measuring 21 degrees) is complementary to angle B. Complementary angles are angles that add up to 90 degrees. So, we can find the measurement of angle B by subtracting the measurement of angle A from 90 degrees, which gives us 90 - 21 = 69 degrees for angle B.
Next, we are told angle B is supplementary to angle C. Supplementary angles are angles that add up to 180 degrees. So, we can find the measurement of angle C by subtracting the measurement of angle B from 180 degrees, which results in 180 - 69 = 111 degrees for angle C.
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hey can you please help me posted picture of question
Answers
This means F(x) is obtained after vertical translation of G(x). This vertical translation can be expressed by adding 4 to G(x).
So,
F(x) = G(x) + 4
F(x) = x² + 4
So, the correct answer is option D
An isosceles trapezoid has a perimeter of 40.9 feet. Its shorter base measures 3.5 feet and its longer base measures 4.4 feet. The two remaining sides have the same length; what is that length?
Answers
P= a + b + c + d
40.9 = 3.5 + 4.4
40.9 = 7.9
-7.9 -7.9
---------------
40.9-7.9=33 and since its calculating two equal sides, 33/2 = 16.5
Answer:
16.5 feet is the amount of the length
The area of a triangle is 30 square feet. If the height of the triangle is 5 feet, what is the base of the triangle? 12 ft 6 ft 3 ft 24 ft
Answers
30=(1/2)*base*5
6=(1/2)*base
base=12 ft
To find the base of the triangle with a known area and height, apply the formula for the area of a triangle and solve for the base, resulting in 12 ft.
The base of the triangle can be found using the formula for the area of a triangle:
Area = 1/2 × base × heightGiven the area is 30 sq ft and height is 5 ftSubstitute the values: 30 = 1/2 × base × 5Solve for base: base = 30 / (1/2 × 5) = 30 / 2.5 = 12 ftThe number of acres of wetland infested by an invasive plant species after t Years is given by u(t)=12•2^t/3. Solve the equation u(t)=50. What does your answer tell you about the wetland?
Answers
u (t) = 12 • 2 ^ t / 3
We equate the equation for u (t) = 50.
We have then:
12 • 2 ^ t / 3 = 50
We clear the value of t:
2 ^ t / 3 = 50/12
log2 (2 ^ t / 3) = log2 (50/12)
t / 3 = log2 (50/12)
t = 3 * log2 (50/12)
t = 6.2 years
Answer:
After 6.2 years 50 acres of wetland are infested by an invasive plant species
How do you determine if two probabilities are conditional to each other?
Please help
Answers
Final answer:
You can determine if two probabilities are conditional by checking if the occurrence of one affects the probability of the other. If it does, the probability is conditional, represented by P(A|B), otherwise, the events are independent.
Explanation:
Determining Conditional Probabilities
To determine if two probabilities are conditional to each other, you consider if the occurrence of one event affects the probability of the other event happening. The conditional probability of event A given event B is denoted by P(A|B). This is calculated by dividing the probability of both events A and B occurring together (P(A AND B)) by the probability of event B:
P(A|B) = P(A AND B) / P(B)
This formula is applicable only when P(B) is greater than zero, meaning event B must have a chance of occurring. If the probability of A happening does NOT change whether B occurs or not, then A and B are independent events. Conversely, if the probability of A does depend on the occurrence of B, then A and B are dependent, and the probability P(A|B) is a conditional probability.
Independence is defined as the situation where the probability of A and B occurring together is the product of their individual probabilities (P(A) * P(B)). If this is true, P(A|B) would simply be P(A), as B's occurrence doesn't affect A's probability.
Fresh raspberries contain 80% water. Dried raspberries contain only 20% water. How many pounds of dried raspberries do you get from 36 lb of fresh berries?
Answers
36*0.2(20%)=7.2, this is how much water the berries obtain.
Now you do 7.2 divided by 0.8 which equals 9. You do this step to find out how much water and the rest of the stuff in the berries.
Happy to help! :)
The answer is 9
The answer is 9
The answer is 9
The answer is 9
A jar holds 2 3/4 cups of water. How much is this in fluid ounces
Answers
A tank contains 30 lb of salt dissolved in 300 gallons of water. a brine solution is pumped into the tank at a rate of 3 gal/min; it mixes with the solution there, and then the mixture is pumped out at a rate of 3 gal/min. determine a(t), the amount of salt in the tank at time t, if the concentration of salt in the inflow is variable and given by cin(t) = 2 + sin(t/4) lb/gal.
Answers
[tex]\implies A'(t)=\dfrac{3\text{ gal}}{1\text{ min}}\cdot\left(2+\sin\dfrac t4\right)\dfrac{\text{lb}}{\text{gal}}-\dfrac{3\text{ gal}}{1\text{ min}}\cdot\dfrac{A(t)\text{ lb}}{300+(3-3)t\text{ gal}}[/tex]
[tex]A'(t)+\dfrac1{100}A(t)=6+3\sin\dfrac t4[/tex]
We're given that [tex]A(0)=30[/tex]. Multiply both sides by the integrating factor [tex]e^{t/100}[/tex], then
[tex]e^{t/100}A'(t)+\dfrac1{100}e^{t/100}A(t)=6e^{t/100}+3e^{t/100}\sin\dfrac t4[/tex]
[tex]\left(e^{t/100}A(t)\right)'=6e^{t/100}+3e^{t/100}\sin\dfrac t4[/tex]
[tex]e^{t/100}A(t)=600e^{t/100}-\dfrac{150}{313}e^{t/100}\left(25\cos\dfrac t4-\sin\dfrac t4\right)+C[/tex]
[tex]A(t)=600-\dfrac{150}{313}\left(25\cos\dfrac t4-\sin\dfrac t4\right)+Ce^{-t/100}[/tex]
Given that [tex]A(0)=30[/tex], we have
[tex]30=600-\dfrac{150}{313}\cdot25+C\implies C=-\dfrac{174660}{313}\approx-558.02[/tex]
so the amount of salt in the tank at time [tex]t[/tex] is
[tex]A(t)\approx600-\dfrac{150}{313}\left(25\cos\dfrac t4-\sin\dfrac t4\right)-558.02e^{-t/100}[/tex]
To determine the amount of salt in the tank at time t, we need to consider the inflow and outflow of the brine solution over time. The inflow rate is given as 3 gal/min, and the concentration of salt in the inflow varies with time according to the equation cin(t) = 2 + sin(t/4) lb/gal. The outflow rate is also 3 gal/min.
Explanation:To determine the amount of salt in the tank at time t, we need to consider the inflow and outflow of the brine solution over time. The inflow rate is given as 3 gal/min, and the concentration of salt in the inflow varies with time according to the equation cin(t) = 2 + sin(t/4) lb/gal. The outflow rate is also 3 gal/min.
To find the amount of salt in the tank at time t, we need to integrate the product of the inflow rate and the concentration of salt over the interval [0, t]. This will give us the total amount of salt that has entered the tank up to time t. We can then subtract the amount of salt that has been pumped out of the tank over the same interval to get the amount of salt remaining in the tank at time t.
a(t) = ∫[0,t] (3 gal/min * cin(t)) dt - 3 gal/min * t.
Daniel is using match sticks to do a square an a triangle. he uses 41 match sticks to do 12 figuring altogether .how many square did he made
Answers
Daniel made 5 squares.
Jay stores hay in cubic stacks on his farm. If the length of each stack is 2/3 yards, what is the volume of hay in each stack? 1/3 cubic yards, 4/9 cubic yards, 1/9 cubic yards, 8/27 cubic yards
Answers
The 4th selection is appropriate.
Answer: The volume of hay in each stack is 8/27 yards
Step-by-step explanation:
Since, the volume of a cube = (side)³
Here, the side of the a cubic stack = [tex]\frac{2}{3}[/tex] yards,
Hence, the volume of a cubic stack,
[tex]V=(\frac{2}{3})^3[/tex]
[tex]=\frac{8}{27}[/tex] cube yard.
⇒ The volume of hay in each stack is 8/27 yards
When two births are randomly selected, the sample space for genders is bb, bg, gb and gg. assume that those four outcomes are equally likely. does the mean of the sample proportions equal the population proportion of girls in two births?
Answers
Hey can you please help me posted picture of question
Answers
Explanation:
Since, rolling a die and tossing a coin are independent events, the sample space of both events is the product of the outcomes for each event, i.e 6 × 2 = 12.
You can check that here:
roll a die toss a coin
1 head
1 tail
2 head
2 tail
3 head
3 tail
4 head
4 tail
5 head
5 tail
6 head
6 tail
So, as you see for each outcome of the event roll a die there are two different possible different outcomes for the event toss a coin; since there are 6 different outcomes for the die, the total number of possibilities is 6 × 2 = 12
Hey can you please help me posted picture of question
Answers
3 x 6 x 4 = 72
answer A. 72
Explanation:
There is 3 flavors
6 cookie add ins
4 flavors of syrup
We multiply these answers using multiplication and we get 72!
:D
Good Day!
Answer:72
A circle has a radius of 6x^9y^5 cm, what is the area of this circle in square centimeters
Answers
[tex]\text {Area of circle }= \pi (6x^9y^5)^2 \text{ cm}^2[/tex]
[tex]\text {Area of circle }= 12\pi x^{18}y^{10} \text{ cm}^2[/tex]
The area of the circle in square centimeters is [tex]\( 36\pi x^{18}y^{10} \)[/tex] cm².
The area of a circle is given by the formula [tex]\( A = \pi r^2 \)[/tex], where [tex]\( r \)[/tex] is the radius of the circle.
Given that the radius [tex]\( r \)[/tex] of the circle is [tex]\( 6x^9y^5 \)[/tex] cm, we can substitute this value into the formula to find the area.
[tex]\( A = \pi (6x^9y^5)^2 \)[/tex]
Now, we square the radius:
[tex]\( (6x^9y^5)^2 = (6x^9y^5)(6x^9y^5) \)[/tex]
[tex]\( = 36x^{18}y^{10} \)[/tex]
Substituting this back into the area formula:
[tex]\( A = \pi \cdot 36x^{18}y^{10} \)[/tex]
[tex]\( A = 36\pi x^{18}y^{10} \)[/tex]
Therefore, the area of the circle in square centimeters is [tex]\( 36\pi x^{18}y^{10} \)[/tex] cm².
Lucy created a design with different shapes. Stars made up 1/4 of all the shapes in the design. Eight ninths of the stars are red. What fraction of all the shapes are red stars?
Answers
Red stars = 8/9
Multiply:
1/4 × 8/9 = 8/36 = 4/18 = 2/9
Answer = 2/9
Hope this helped☺☺
Final answer:
To find out what fraction of all shapes are red stars in Lucy's design, multiply the fraction of stars (1/4) by the fraction of red stars among them (8/9) to get 2/9 of all shapes being red stars.
Explanation:
The question asks us to determine what fraction of all the shapes in Lucy's design are red stars. To solve this, we need to multiply the fraction of shapes that are stars by the fraction of those stars that are red. Lucy has stars that make up 1/4 of all shapes, and 8/9 of these stars are red. By multiplying these two fractions, we can find the fraction of all the shapes that are red stars.
Here is the step-by-step calculation:
Multiply the fractions: (1/4) × (8/9) = 8/36.
Simplify the fraction: 8/36 can be simplified by dividing both the numerator and the denominator by the greatest common factor, which is 4. So, (8 ÷ 4)/(36 ÷ 4) = 2/9.
Therefore, 2/9 of all the shapes in Lucy's design are red stars.
Solve x^2 +14x = -24 by completing the square. Which is the solution set of the equation?
Answers
Find HALF the value of 14: 7
Square this: 49
Add 49, and then subtract 49: x^2 + 14x + 49 - 49 = -24 We have a
perfect square
Rewrite the quadratic as the sq. of a binomial: trinomial on
the left
(x+7)^2 = 25
Take the sqrt of both sides: x+7 = plus or minus 5
Then x = -2 and x = -12
Answer:
{−12, −2}
Step-by-step explanation:
A rectangular picture has dimensions 2 1/2 by 1 1/2. It is to be enlarged so that it is still similar to the original rectangle. If the longer dimension is now 10 , how much longer than the original is the perimeter now
Answers
p = 2 (w) +2 (l)
First we look for the scale factor of the longest dimension, which is given by:
k = (10) / (2 1/2)
k = 4
Then, the perimeter is given by:
p '= 2 (4w) +2 (4l)
Rewriting:
p '= 4 (2 (w) +2 (l))
p '= 4p
Answer:
the perimeter now is 4 times longer than the original
steph has 5 1/4 pounds of rice.she wants to place 1/4 pound of rice in each plastic bag.how many bags will she need?
Answers
total amount of rice in one bag = 1/4
Number of bags needed = 5 1/4 ÷ 1/4 = 21/4 ÷ 1/4 = 21/4 x 4 = 21 bags
Answer: 21 bags.
Can the figure below tessellate a plane? Explain your answer.
Answers
Answer:
Step-by-step explanation:
A tessellation is created when a shape is repeated over and over again covering a plane without leaving any gaps or overlaps. Tessellation is also known as tiling. Triangles, squares and hexagon are perfect examples of figures that can create tessellation.
The figure below cannot, because there will be gaps.
I hope it helps, Regards.
Sally is making sun tea. Every hour, the concentration of the tea doubles. If it takes 6 hours for the tea to be ready, how long would it take for the tea to reach half of the final concentration (in hours)?
Answers
If it double every hour, this means it would have to be at half the concentration the hour before the 6th hour in order to double to get the full concentration in the sixth hour.
X2 x 2 x 2 x 2 x 2 x 2
2, 4, 8, 16, 32, 64
32 is half of 64.
Tea reaches half concentration after 5 hours; at 4 hours, it's a quarter.
To solve this problem, we can use the fact that the cable between the towers forms a parabolic shape. Since the cable touches the sides of the road midway between the towers, the cable forms a parabola with its vertex at the midpoint between the towers and its axis of symmetry being parallel to the road.
Let's denote the midpoint between the towers as the origin (0, 0). Then, the vertex of the parabola is at (640, 160) since the towers are 1280 meters apart and rise 160 meters above the road.
The general equation of a parabola in vertex form is:
[tex]\[ y = a(x - h)^2 + k \][/tex]
Where:
- (h, k) is the vertex of the parabola.
- ( a ) determines the "width" of the parabola.
Since the parabola is symmetric, we know that it opens either upwards or downwards. Given the geometry of the situation (the cable hanging between the towers), we know it opens downwards. Therefore, ( a ) will be negative.
To find the equation of the parabola, we need to find the value of ( a ). We can use the point (640, 0). which is the midpoint between the towers.
Let's plug in the values:
[tex]\[ 0 = a(640 - 640)^2 + 160 \]\[ 0 = 160a \][/tex]
From this, we find that ( a = 0 ).
This indicates that the parabola is a horizontal line, which is not the shape of a cable between the towers. We made an error. The equation of a parabola is [tex]\( y = a(x - h)^2 + k \),[/tex] but for this problem, we should use the equation of a downward-opening parabola, which is [tex]\( y = ax^2 + bx + c \).[/tex]
Let's correct the approach and use the new equation to solve the problem. We'll find the coefficients [tex]\( a \), \( b \), and \( c \)[/tex] using the given information. Once we have the equation of the parabola, we can find the height of the cable at a distance of 200 meters from a tower. Let's do it step by step.
The base is 34 ya and it’s height is 20.5. What is the area
Answers
The average value of y=v(x) equals 4 for 1≤x≤6, and equals 5 for 6≤x≤8. what is the average value of v(x) for 1≤x≤8 ?
Answers
Area = 4*(6 -1) +5(8 -6) = 30
Width = 8 - 1 = 7
Average value = 30/7 = 4 2/7
The average value of v(x) for the interval 1≤x≤8 is calculated by summing up the products of the average values each times their respective lengths of interval, and dividing by the total length of the interval, which results in 4.2857 approximately.
Explanation:The average value of v(x) for 1≤x≤8 can be calculated using the formula for the average of a function over an interval, which is the sum of the function values times their respective lengths of interval, divided by the total length of the interval. For the first interval, 1≤x≤6, the average value of y is 4, and the length of the interval is 6-1=5. Hence, the sum of the product of the average value times the length of the interval is 4*5=20.
For the second interval, 6≤x≤8, the average value of y is 5, and the length of the interval is 8-6=2. Hence, the sum of the product of the average value times the length of the interval is 5*2=10.
Summing up these two products, we get 20+10=30. The total length of the overall interval 1≤x≤8 is 8-1=7. Hence, the average value of v(x) for 1≤x≤8 is 30/7=4.2857, approximately.
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Is 78990 divisible by 9
Answers
The diameter of a circle is 18 cm. What is its area in terms of π.
Answers
Answer:
Area, [tex]A=(81\pi )\ cm^2[/tex]
Step-by-step explanation:
Given that,
The diameter of the circle, d = 18 cm
The radius of a circle is half of its diameter, r = 9 cm
The formula to find the area of a circle is given by :
[tex]A=\pi r^2[/tex]
When r = 9 cm
[tex]A=\pi (9\ cm)^2[/tex]
[tex]A=(81\pi )\ cm^2[/tex]
So, the area of the circle is [tex](81\pi )\ cm^2[/tex]. Hence, this is the required solution.
Every week Ben collects a few pounds of paper to recycle. The graph below shows the total number of pounds of paper (y) that Ben collected in a certain amount of time (x), in weeks:
(photo below)
What would most likely be the total amount of paper, in pounds, Ben would collect in 10 weeks?
230 pounds
270 pounds
300 pounds
330 pounds
Answers
30*11=330