Answer:
Difference Between Active and Passive Transport
Active Transport Passive Transport
Active transport is an energetic process. It is a physical process.
It is extremely selective. It is partially non-selective
It is a quick process. It is a moderately slow process.
It Occurs in one direction. It occurs bidirection
400 passengers go on a coach trip.
Each coach takes 50 passengers.
Each passenger pays £23
The table shows the costs for the
coach company.
Each coach travels 200 miles.
Work out the total profit the company makes from this trip.
The total profit that the company would make on the trip can be found to be £7,320
How to find the total profit made?The revenue that the company makes would be:
= Number of passengers x Amount that each passenger pays
= 400 x 23
= £9, 200
Each coach takes 50 passengers so the number of coaches needed are:
= 400 passengers / 50 passengers per coach
= 8 coaches
The total cost to the company for the trip is:
= (Number of coaches x Driver cost per coach) + (Number of coaches x Fuel per mile x Distance traveled for each coach)
= ( 8 x 95) + ( 8 x 70p x 200)
= 760 + 112, 000 p
= 760 + 112, 000/ 100 pence per pound
= £ 1,880
The total profit is:
= Revenue - total cost
= 9, 200 - 1, 880
= £7,320
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can you help meeeeeeeeeeeeeeeeeeee pleaseeeeeeee!!!
Answer:
[tex]f(x) = 2(x-9)^{2} + 3[/tex]
Step-by-step explanation:
In vertex form, (h, k) represents the vertex.
With the given vertex of (9, 3), h = 9 and k = 3. You can substitute those values into the equation.
In vertex form, a represents vertical stretch or compression.
In this case, since the parent function, x^2 is multiplied by 2, a = 2. You can substitute this into the equation.
You end up with [tex]f(x) = 2(x-9)^{2} + 3[/tex]
) 3 1+ − 2 2− + 2 1−
A light bulb manufacturer claims that a certain type of bulb they make has a mean lifetime of 100010001000 hours and a standard deviation of 202020 hours. Each package sold contains 444 of these bulbs. Suppose that each package represents an SRS of bulbs, and we calculate the sample mean lifetime \bar x
x
ˉ
x, with, \bar, on top of the bulbs in each package.
The null and alternative hypotheses are H0: µ ≥ 1000 and Ha: µ < 1000 respectively.
The evidence to reject the manufacturer's claim is in the rejection region for the test statistic which is z < -1.54.
What is the null and alternative hypothesis?The null hypothesis consist of the inequality sign “equal” sign (“=” or “≥” or “≤”).
Alternative hypothesis is the complement to the null hypothesis.
The claim: The mean life of a certain type of light bulb is at least 1000 hours”. At least in inequality is represented by “≥” sign, it is null hypothesis.
H0: µ ≥ 1000
Alternative hypothesis:
The alternative hypothesis is the complement, that is, the mean life of a certain type of light bulb is less than 1000 hours.
Ha: µ < 1000
As the alternative hypothesis contains “<” sign, the test is left-tailed.
Using α = 0.02, we have critical value from standard table of normal distribution:
z0 = -1.54
Therefore, the rejection region for the test statistic is z < -1.54.
Complete question:
A light bulb manufacturer claims that a certain type of bulb they make has a mean lifetime of 1000 hours and a standard deviation of 20 hours. Each package sold contains 4 of these bulbs. Suppose that each package represents an SRS of bulbs, and we calculate the sample mean lifetime \bar x x ˉ x, with, \bar, on top of the bulbs in each package. 1. What is the null and alternative hypotheses? 2. At a = .02, do you have enough evidence to reject the manufacturer's claim?
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The function f(x) is graphed below. How many points on the graph
represent a relative extreme value?
The graph of the given function f(x) has two extreme values at the point 'b' and the point 'd'.
Given, The function f(x) is graphed in the figure and we have to find the points on the graph representing the relative extreme values
As, we got the extreme values on the graph of a function when the graph makes a turn and the given function graph is turning at two points.
So, the graph has extreme values at two points i.e. b and d
So, the graph of the given function f(x) has two extreme values at the point 'b' and the point 'd'.
Hence, the graph of the given function f(x) has two extreme values at the point 'b' and the point 'd'.
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The formula A = Pe describes the accumulated value, A, of a sum of money, P, the principal, after t years at annual percentage rate r (in decimal form) compounded continuously. Complete the table for a
savings account subject to continuous compounding.
Amount Invested Annual Interest Rate
$7000
9%
years
Accumulated Amount
Double the amount invested
Time t in Years
?
LIDE
Amount Invested Annual $7000, Interest Rate of 9% Accumulated Amount is Double the amount invested in 7.7 years,
What is an interest rate?
An interest rate tells you how high the cost of borrowing is, or high the rewards are for saving. So, if you're a borrower, the interest rate is the amount you are charged for borrowing money, shown as a percentage of the total amount of the loan.
Here, we have
A = P e^(rt) ......(1)
P = Amount Invested = $7000
Interest Rate = 9%
A = Accumulated Amount Double the amount invested = 2P = $14000
t = time in years
from equation (1) , we get
14000 = 7000×e^(0.09)t
2 = e^(0.09)t
㏑2 = 0.09t
0.6931 = 0.09t
t = 0.6931/0.09
t = 7.7 years
Hence, Amount Invested Annual $7000, Interest Rate of 9% Accumulated Amount is Double the amount invested in 7.7 years.
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Find the y-coordinate of the y-intercept of the polynomial function defined
below.
f(x) = 2(2x - 3) (5x + 5)
Answer:
y = -30
(0, -30)
Step-by-step explanation:
f(x) = 2(2x - 3) (5x + 5)
2 = 0, 2x - 3 = 0, 5x + 5 = 0
+3 +3 -5 -5
------------------------------
2x = 3 , 5x = -5
÷2 ÷2 ÷5 ÷5
--------------------------------
x = (3/2), x = -1
f(x) = 2(2(0) - 3) (5(0) + 5)
2(0 - 3) (0 + 5)
2(-3) (5)
-6 × 5 = -30
f(x) = -30
y = -30
(0, -30)
f(x) = 2(2x - 3) (5x + 5)
2(2(3/2) - 3) (5(3/2) + 5)
2(3 - 3) (15/2 + 5)
2(0) (25/2)
y = 0
((3/2), 0))
f(x) = 2(2x - 3) (5x + 5)
2(2(-1) - 3) (5(-1) + 5)
2(-2 - 3) (-5 + 5)
2(-5) (0)
-10(0)
y = 0
(-1, 0)
I hope this helps!
2 Which of the following statements is true?
A.Every irrational number can be represented as a fraction.
B.Every irrational number can be represented with the help of decimals.
C.Every rational number can be represented as a terminating decimal.
D.Every rational number can be represented as an integer.
The true statement is 'Every irrational number can be represented with the help of decimals.'
The correct answer is an option (B)
We know that the rational numbers are of the form p/q (i.e., simple fraction) where p, q are integers with q ≠ 0
And an irrational numbers are real numbers that cannot be represented as simple fractions.
An irrational numbers can be written in decimals.
√3 = 1.7321
We know that every terminating decimal is a rational number (for example, 2.5 = 5/2) but every rational number may not be a terminating decimal (for example, 2/3 = 0.666...)
So, a statement 'Every irrational number can be represented as a fraction.' is false.
A statement 'Every irrational number can be represented with the help of decimals.' is True
A statement 'Every rational number can be represented as a terminating decimal.' is False.
and a statement 'Every rational number can be represented as an integer.' is False.
Therefore, the true statement is 'Every irrational number can be represented with the help of decimals.'
The correct answer is an option (B)
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According to the diagram, what is the altitude of the airplane?
500 m
400 m-
The altitude of the airplane=300 m
What is altitude?
The height at which something is relative to a planet's or a natural satellite's surface, like sea level or land
The Pythagorean Theorem is a well-known geometric principle that states that the squares on the hypotenuse of a right triangle, which is the side opposite the right angle, equal the total of the squares on the legs.
The given figure is a right triangle.
opposite side=x
hypotenuse=500 m
Adjacent side=400 m
According to Pythagoras' theorem,
hypotenuse²=opposite side²+Adjacent side²
500² = x²+400²
2500=x²+1600
x²=2500-1600=900
x=√900=±300
x=300, x=-300
consider positive value
So, the altitude of the airplane=300 m
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A car travels 210 kilometres in 3 hours 30 minutes
Calculate the average speed, in km/h, of the car.
Answer:
70 km/hr
Step-by-step explanation:
Solve for a.
a+45=112
Enter your answer as a fraction in simplest form in the box.
a =
Answer:
67
Step-by-step explanation:
a+45=112
-45. -45
a=67
Hopes this helps please mark brainliest
Answer:
a = 67
Step-by-step explanation:
Given equation,
→ a + 45 = 112
Now the value of a will be,
→ a + 45 = 112
→ a = 112 - 45
→ [ a = 67 ]
Hence, the value of a is 67.
Bike Cost $800 $600 $400 $200 $0 Bike City Comparing Costs Fast BMX Bike World Bike Store Awesome Bikes How much more is the cost at Fast BMX than Bike World?
Using the mathematical operation of subtraction, the cost at Fast BMX is $200 more than the cost at Bike World.
How is the difference computed?The difference in the cost of bikes can be computed using the mathematical operation of subtraction.
Subtraction operations involve deducting the subtrahend from the minuend to get the result known as the difference.
Bike Stores Prices
Bike City $300
Fast BMX $500
Bike World $300
Awesome Bikes $400
Difference between Fast BMX and Bike World
= $200 ($500 - $300)
Thus, the cost of bikes is higher at Fast BMX than at Bike World by $200.
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Four bottles of water and three cups of coffee cost $10.85. Four bottles of water and six cups of coffee cost $16.70. How much does each cost?
Answer:
each water is $1.25 each coffee is $1.95
Step-by-step explanation:
we know that the difference between $10.85 and $16.70 is 3 cups of coffee
if we subtract $10.85 from $16.70 we get $5.85
$5.85 divided by 3 is $1.95
so each cup of coffee is $1.95
now we subtract the same $5.85 from the price of 4 waters and 3 coffees
$10.85 minus $5.85 equals $5.00
divide that by 4 to get the price of each water bottle and you get $1.25 per water
What are numbers that have 2,3,4,5,6 as their factors? (under 200)
Answer:
120, 60, 180
Step-by-step explanation:
The sum of twelve times a number and eleven is 251. Find the number.
Answer:
x = 20
Step-by-step explanation:
12x + 11 = 251
12x + 11 - 11 = 251 - 11
12x = 240
12x /12 = 240/12
x=20
What is least to greatest 7/8.5/11,2/3
The arrangement of the fraction from least to greatest is 5/11, 2/3 and 7/8.
What is a fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers
The fraction can be changed to percentage to make it easier.
7/8 = 7/8 × 100 = 87.5%
5/11 = 5/11 × 100 = 45.5%
2/3 = 2/3 × 100 = 66.7%
The arrangement is 5/11, 2/3 and 7/8.
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Question 2 (Essay Worth 10 points)
(01.03 MC)
Solve the equation √x-6+2=6 for the variable. Show each step of your solution process.
X5
G9
BIUS X₂ x² I
ΞΩΣ
EE 99
Source ✔ C
글 흐흐≡ Styles
Format
The value of the variable x is, x = 22.
What is variable in equation?
In mathematics, a variable is an alphabet or phrase that denotes an unknowable quantity, unknowable value, or unknowable number. In the case of algebraic expressions or algebra, the variables are employed specifically. A linear equation with x as a variable and 9 and 4 as constants, for instance, is x+9=4.
Consider, the given equation
√(x - 6) + 2 = 6
Subtract 2 on both sides,
√(x - 6) + 2 - 2 = 6 - 2
√(x - 6) = 4
Taking square on both sides,
[tex](\sqrt{x-6})^2=4^2\\ (x-6)=16[/tex]
x - 6 = 16
Add 6 on both sides,
x - 6 + 6 = 16 + 6
x = 22
Hence, the value of the variable x is x = 22.
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pls help me with this problem
According to the intercepts and points, the equation is of the parabola is y = (1/2)*(x + 2 + √2)*(x + 2 - √2)
Equation of the parabola:
The general form of a parabola with the x-intercepts (a, 0) and (b, 0) can be written as:
y = a*(x - a)*(x - b).
Given.
Here we have the x - intercepts (-2 - √2, 0) and (-2 + √2, 0) and the points (-1, 1).
Now, we have to find the equation of the parabola.
Here we know that the x-intercepts are (-2 - √2, 0) and (-2 + √2, 0)
When we apply the values on the general form of the equation of the parabola, then we get the equation as:
=> y = a*(x + 2 + √2)*(x + 2 - √2)
Here we also know that the y-intercept is (-1, 1), which means that when x = -1, we must have y = 1, replacing that we get:
=> 1 = a*(2 + √2)*( 2 - √2)
=> 1 = a*(4 - 2)
=> 1 = 2a
=> a = 1/2
Therefore, the equation of the parabola is written as,
=> y = (1/2)*(x + 2 + √2)*(x + 2 - √2)
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simplify √10 · √6
1. √18
2. 4√5
3. √80
4. 8√10
Answer:
Step-by-step explanation:
so there are square root properties that they want you to recognize and respect :P everyone wants a little respect, even the square root sign :D
first we can move things under one root sign, like this...
[tex]\sqrt{10}[/tex] * [tex]\sqrt{6}[/tex] = [tex]\sqrt{10 * 6}[/tex]
now we can do that multiplication under the square root sign.
[tex]\sqrt{10 * 6}[/tex] = [tex]\sqrt{60}[/tex]
now we can think about this for a long long time and see that 60 can be split up in other ways besides 10 * 6
for instance 15 * 4 also is 60
so this is equal [tex]\sqrt{15 * 4}[/tex] = [tex]\sqrt{10 * 6}[/tex] = [tex]\sqrt{60}[/tex]
now just take out the perfect square part
2 * [tex]\sqrt{15}[/tex]
this isn't one of the listed answers but it is a correct answer , for what is being asked. The teacher got the question wrong :o
The overhead reach distances of adult females are normally distributed with a mean of 202.5 cm and a standard deviation of 8.6 cm.
a. Find the probability that an individual distance is greater than 211.80 cm.
b. Find the probability that the mean for 20 randomly selected distances is greater than 200.30 cm.
c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?
a. The probability is
(Round to four decimal places as needed.)
Answer: I am not sure if you're accustomed to using a z-score and table of probabilities or technology, so I will answer using both!
a) Since you're choosing one person from the population, you will use the mean and standard deviation from the population. z= (210.9-197.5)/8.6 = 1.56 Using a table of normal probabilities,
P(x>210.9)= 1-P(z<1.56)= 1- 0.9406=0.0594
Using technology: normalcdf(210.9, 1E99, 197.5, 8.6)=0.0596
b) Since you're calculating the population for a sample to occur, you need to get a mean of the sampling distribution and standard deviation of the sampling distribution.
Meanpop=Meansampling dist.=197.5
St. Devsampling dist.= Stdpopulation/√n = 8.6/√15 = 2.22
Using technology, P(X>196.20)= normalcdf( 196.20, 1E99, 197.5, 2.22) = 0.7209
c) You only have to worry about the sample size in a sampling distribution if you either do not know the shape of the distribution of the population or if the distribution of the population is not normally distributed. Since this population is normally distributed (as stated in the given information), then your sample size does not have to be greater than 30.
Hope this helps! I can solve part b using a z-score if you need me to.
Step-by-step explanation:
Alonso was driving down a road and after 4 hours he had traveled 96 miles. At this speed, how many hours would it take Alonso to drive 288 miles? PLEASE HURRRY
The number of hours that it will take Alonso to drive 288 miles is 12 hours.
How to calculate the time?Since Alonso was driving down a road and after 4 hours he had traveled 96 miles, the speed will be:
Speed = Distance / Time
Speed = 96 / 4
Speed = 24 miles per hour.
Therefore, the time taken for 288 miles will be:
Time = Distance / Speed
Time = 288 / 24
Time = 12
The time taken is 12 hours.
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Solve for x in the equation. The equation is added as an image below.
Answer:
x = 10
Step-by-step explanation:
You want the value of x that satisfies x -(x-1)/3 -(2x-5)/5 +(x+8)/6 = 7.
SolutionThe least common denominator is 5·6 = 30, so we can eliminate the fractions by multiplying by 30:
30x -10(x -1) -6(2x -5) +5(x +8) = 7·30
30x -10x +10 -12x +30 +5x +40 = 210 . . . . . eliminate parentheses
13x +80 = 210 . . . . . . . . . collect terms
13x = 130 . . . . . . . . . . subtract 80
x = 10 . . . . . . . . . . divide by 13
__
Additional comment
Often an equation can be nicely solved by a graphing calculator. We like to write the equation in the form f(x) = 0, and look for the x-intercepts. Those are usually labeled by the calculator. Here that rewrite is accomplished by subtracting 7 from both sides.
two buses leave a station at the same time and travel in opposite directions. One bus travels 15 km/h faster than the other. If the two buses are 1004 kilometers apart after 4 hours, what is the rate of each bus?
The speed of slower bus is 118 km/hr and speed of faster bus is 133 km/hr
What is speed?Speed is a scalar quantity that refers to "how fast an object is moving".
Given that, two buses leave a station at the same time and travel in opposite directions, one bus travels 15 km/h faster than the other, the two buses are 1004 kilometres apart after 4 hours,
Speed = distance/ time
Let the speed of the slower bus be v and the faster bus be (v+15)
According to the question,
vt + (v+15)t = 1004
vt + vt + 15t = 1004
t = 4
4v + 4v + 60 = 1004
8v = 944
v = 118
Hence, The speed of slower bus is 118 km/hr and speed of faster bus is 133 km/hr
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This is what I need help with
Answer:no picture
Step-by-step explanation:
a weaver completes 2/3 of a basket each day. how long will it take the wevaer to complete 3 1/3 baskets
The time that it take the wevaer to complete 3 1/3 baskets is 5 days.
What is fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
In this case, the weaver completes 2/3 of a basket each day. The time that it will take the wevaer to complete 3 1/3 baskets will be:
= Number of baskets / Number completed daily
= 3 1/3 ÷ 2/3
= 10/3 ÷ 2/3
= 10/3 × 3/2
= 5
It'll take 5 days.
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Question 7 of 10
Here is a table of values for y = f(x).
X
-2 -1 0 1 2 3
f(x) 5 6
7
Mark the statements that are true.
4
8 9 10 11
5 6
12 13
A. The range for f(x) is all real numbers.
B. f(5) = -2
C. The domain for f(x) is the set (-2,-1, 0, 1, 2, 3, 4, 5, 6).
D. f(-1) = 6
Option (C) is the correct one and the only true statement is
The domain of the function f(x) is { -2, -1, 0, 1, 2, 3, 4, 5, 6 }.
Given, a table of values for y = f(x)
x -2 -1 0 1 2 3 4 5 6
y 7 8 9 10 11 5 6 12 13
We have to find the correct statements,
as the range of the function f(x) is { 4, 8, 9, 10, 11, 5, 6, 12, 13 }
the image of 5 in the function is 6 i.e. f(5) = 6.
The domain of the function f(x) is { -2, -1, 0, 1, 2, 3, 4, 5, 6 }
the image of -1 in the function is 8 i.e. f(-1) = 8.
Hence, only the option (C) is the correct one and the only true statement is
The domain of the function f(x) is { -2, -1, 0, 1, 2, 3, 4, 5, 6 }.
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trapezium ABCD is being enlarged using scale factor 2 and centre X to give trapezium A'B'C'D
what are the coordinates of vertex A'
The required coordinates of vertex A' are (3, 4) in the trapezium ABCD.
Trapezium ABCD is given in the question which has :
The coordinates of vertex A is (2, 6)
Here the scale factor is 2
A = (2, 6)
The scale factor of a dilation is given as
k = 2
The center of dilation is given as
Center = (1, 8)
The rule of the dilation is calculated using as
B' = (k(x - a) + a, k(y - b) + b)
Where
(a, b) = (1, 8)
k = 2
(x, y) = (2, 6)
So, we have
A' = (2 × (2 - 1) + 1, 2 × (6 - 8) + 8)
A' = (3, 4)
Hence, the required coordinates of vertex A' are (3, 4).
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The question seems to be incomplete the correct question has been attached
if 54 gallons is the volume of 2:7, what is the total volume of 3:12?
The total volume of 3:12 is 90 gallons
What is Ratio:In math, the term Ratio is used to compare two or more numbers or quantities. It indicates how small or big a quantity is when compared to each other. In a ratio, the comparison between two values is done by using division.
Here we have
54 gallons is the volume of 2:7
=> As we know 2+7 = 9
Therefore, for 9 parts = 54 gallons of volume
=> 1 part = 54/9 = 6 gallons of volume
Here we need to find 3: 12
For 3 parts = 3 × 6 gallons of volume = 18 gallons
For 12 parts = 12 × 6 gallons of volume = 72 gallons
=> total volume = 18 gallons + 72 gallons = 90 gallons
Therefore,
The total volume of 3:12 is 90 gallons
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Please help with the following question.
The probabilities, using the Poisson distribution, are given as follows:
a) Two earthquakes in a year: 0.0446 = 4.46%.
b) No earthquakes in two consecutive months: 0.3679 = 36.79%.
c) No earthquakes in two consecutive months, given that there were no earthquakes in the previous month: 0.3679 = 36.79%.
What is the Poisson distribution?The Poisson distribution is used when we only have the mean in a given interval and the mass function is given as follows:
[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]
The parameters are listed as follows:
x is the number of successes.e = 2.71828 is the Euler number.[tex]\mu[/tex] is the mean in the given interval or range of values of the input parameter.For one year, the mean number of earthquakes is given as follows:
[tex]\mu = 6[/tex]
The probability of exactly two earthquakes in a year is obtained as follows:
[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]
[tex]P(X = 2) = \frac{e^{-6}6^{2}}{(2)!} = 0.0446[/tex]
For two months, the mean is given as follows:
[tex]\mu = 2 \times 6 \times \frac{1}{12} = 1[/tex]
For items b and c, the probabilities are the same, P(X = 0), as the events are independent, hence:
[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]
[tex]P(X = 0) = \frac{e^{-1}1^{0}}{(0)!} = 0.3679[/tex]
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. √-100 rewrite each expression using I
Answer:
?????
Step-by-step explanation: