The speed (rate) of the plane in still air is 1100 kilometers per hour and the speed (rate) of the wind is 210 kilometers per hour.
We assume the speed (rate) of the plane in still air to be x kilometers per hour, and the speed (rate) of the wind to be y kilometers per hour.
Thus, flying against the wind, the acting speed (rate) for the plane will be x - y kilometers per hour.
Flying with the wind, the acting speed (rate) for the plane will be x + y kilometers per hour.
We are given that flying against the wind, the airplane travels 6230 kilometers in 7 hours.
Thus, speed (rate) = 6230/7 kilometers per hour = 890 kilometers per hour.
Equating this to the derived speed of the airplane flying against the wind, we get x - y = 890 ... (i).
We are given that flying with the wind, the airplane travels 10480 kilometers in 8 hours.
Thus, speed (rate) = 10480/8 kilometers per hour = 1310 kilometers per hour.
Equating this to the derived speed of the airplane flying with the wind, we get x + y = 1310 ... (i).
Now, on adding equations (i) and (ii), we get:
2x = 2200,
or, x = 1100.
Substituting x = 1100 in (ii), we get:
x + y = 1310,
or, 1100 + y = 1310,
or, y = 1310 - 1100 = 210.
Thus, the speed (rate) of the plane in still air is 1100 kilometers per hour and the speed (rate) of the wind is 210 kilometers per hour.
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Today only, a table is being sold for $100.80. This is 24% of its regular price. What was the price yesterday?
Answer:
$420
Step-by-step explanation:
100.80/x = 24/100
with x being the regular price
x = (100.8*100)/24
x = 420
Help Urgent In a Hurry
1. What is the energy of photon having a frequency of a 4.5 × 106 Hz? (h = 6.6 × 10-34 J s)
2. Calculate the energy of radiation of wavelength of 615 nm (h = 6.6 × 10-34 J s).
3. Calculate the energy of radiation of wavelength of 300 nm (h = 6.6 × 10-34 J s).
4. What is the energy of a photon having a frequency of 4 × 104 Hz? (h = 6.6 × 10-34 J s)
5. A photon has a wavelength of 230 nm. Which of the following represents the energy of the photon?
The energy of the photon in each case is;
1. 2.97 * 10^-27 J
2. 3.2 * 10^-19 J
3. 6.6 * 10^-19 J
4. 2.64 * 10^-29 J
5. 8.6 * 10^-19 J
What is the energy of photon?
The energy of a photon is obtained form the Plank's equation; E = hf
1) E = hf
E = 6.6 × 10^-34 J s * 4.5 × 10^6 Hz
E = 2.97 * 10^-27 J
2)E = hc/λ
E = 6.6 × 10^-34 J s * 3 * 10^8/615 * 10^-9
E = 3.2 * 10^-19 J
3) E = hc/λ
E = 6.6 × 10^-34 J s * 3 * 10^8/300 * 10^-9
E = 6.6 * 10^-19 J
4) E = hf
E = 6.6 × 10^-34 J s * 4 × 10^4 Hz
E = 2.64 * 10^-29 J
5) E = hc/λ
E = 6.6 × 10^-34 J s * 3 * 10^8/230 * 10^-9
E = 8.6 * 10^-19 J
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What is the slope of a line perpendicular to 3x + 2y = 7?
-2/3
-3/2
3/2
2/3
Answer:
m = 2/3
Step-by-step explanation:
Rewrite in slope-intercept form.
y = -3/2x + 7/2
Using the slope-intercept form, the slope is −3/2.
m = -3/2
The equation of a perpendicular line to y=−3/2x + 7/2 must have a slope that is the negative reciprocal of the original slope.
Answer:
[tex]\frac{2}{3}[/tex]
Step-by-step explanation:
• First rewrite the original equation in the form y = mx + c ,
where m = gradient:
[tex]3x + 2y = 7[/tex]
⇒ [tex]2y = -3x + 7[/tex]
⇒ [tex]y = \frac{-3}{2}x + \frac{7}{2}[/tex]
• From this equation, we can see that the gradient, m = [tex]\frac{-3}{2}[/tex] .
The gradient of a line perpendicular to another line with gradient m, = [tex]\frac{-1}{m}[/tex].
∴ gradient of perpendicular = -1 ÷ [tex]\frac{-3}{2}[/tex]
= [tex]\frac{2}{3}[/tex]
mike solves 56 problems in 1 hour 45 min, how many problems does he solve per hour
You and a friend go to Tacos Galore for lunch. You order two soft tacos and three burritos, and
your total bill is AED 18. Your friend's bill is AED 20.00 for four soft tacos and two burritos.
How much does a soft taco cost?
Answer:
AED 3
Step-by-step explanation:
Let tacos: t
Let burritos: b
1) Set up equations.
2t + 3b = 18
4t + 2b = 20
2) Solve the system of equations using substitution.
2t = 18 - 3b
t = 18/2 - 3b/2
t = 9 - 3b/2
Substitute this into the second equation and simplify.
4(9 - 3b/2) + 2b = 20
36 - 12b/2 + 2b = 20
36 - 6b + 2b = 20
36 - 4b = 20
-4b = 20 - 36
-4b = -16
b = -16/-4
b = 4
3) Substitute the found answer in any one of the two equations.
2t + 3(4) = 18
2t + 12 = 18
2t = 18 - 12
2t = 6
t = 6/2
t = 3
Therefore, a soft taco costs AED 3.
Fitness Your goal is to take at least 10,000 steps per day. According to your pedometer, you have walked 527 4 steps. Write and solve an inequality to find the possible numbers of steps you can take to reach your goal.
The inequality is x + 5274 ≥ 10,000.
The total number of steps I have to take to reach my goal is 4726.
How many more steps do I have to take?Here are inequality signs and what they mean:
> means greater than< means less than≥ means greater than or equal to ≤ less than or equal toNumber of steps I have to take + number of steps I have taken ≥Total steps
X + 5274 + x ≥ 10,000
x ≥ 10,000 - 5274
x ≥ 4726
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The time that passes between the time you see lightning and you hear the thunder depends on your distance from the lightning. With each km from the lightning 3 seconds pass.
a) Make a table of values for distances from 0 to 5 km.
b) Graph this relation. State whether it is a linear or non-linear relation.
c) Using your graphed relation, how much time passes before you hear lightning that occurs 4.5 km away?
d) Using your graphed relation, how far away are you if you hear the thunder in 1.5 seconds?
When the lightning occurs 4.5 km away then we will hear after 13.5 seconds and if we hear after 1.5 seconds then we are 0.5 km away from lightning.
Given With each km from the lightning 3 seconds passes.
a) The table of values for distances from 0 to 5 km.
Distances Time
0 0
1 3
2 6
3 9
4 12
5 15
b) The graph of lightning is a linear relation because it is increasing constantly by 3 seconds. f(x)=3x
c) When distance =1 , the time be 3 seconds
when distance =4.5 , the time=3*4.5
=13.5 seconds.
d) When time is 3 seconds = 1km
when time =1.5 seconds , the distance be 1/2=0.5 km.
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for what values of m does the equation mx=5 have a single solution? can m have a value for which the equation does not have any solution? what about an infitnite number of solutions? i know that not any solution is m=0 and for a single one i need it like x<-3 3
The equation has no solutions when m = 0, and when m ≠ 0, the equation has only one solution.
For what values of m we have a single solution?
Here we have the equation:
m*x = 5
If we solve for x, we get:
x = 5/m
So, as long as m is different than zero, we will have one solution.
We can't have m = 0 because we can't divide by zero.
Then:
m > 0 or m < 0.
When we have no solutions?We have no solutions when m = 0, the equation becomes:
0*x = 5
0 = 5
This equation has no solution
And we never can have infinite solutions.
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Which function has a vertex at (2, 6)?
Answer:
A quadratic function
Step-by-step explanation:
Answer:
f(x) = 2|x – 2| + 6
Step-by-step explanation:
On edg 2022
Use your calculator to estimate the value of
log752.
Click on the correct answer.
1.450
1.653
2.031
The value of the given logarithm using calculator is 2.031
Logarithm functionsLogarithm are inverse of exponential functions. Given the following logarithm expression;
log(7)52
This can also be expressed as:
log(7)52 = log52/log7
log(7)52 = 0.5399/0.9804
log(7)52 = 2.031
Hence the value of the given logarithm using calculator is 2.031
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Four friends had dinner togethere.
The total cost was $65.60.
The four friends shared the cost eaually between them.
How much did each person pay
Answer:
Your answer is $16.40
On a coordinate plane, quadrilateral Q R S T has points (0, 2), (negative 4, 0), (0, negative 3), and (4, 0).
The rule for the dilation of quadrilateral QRST to the image Q'R'S'T' is DO,0.5(x, y) → (0.5x, 0.5y).
What are the coordinates of Q', if Q(0, 2)?
(, )
By applying the definitions of rigid transformation ((x, y) → (0.5 · x, 0.5 · y)) and dilation, we conclude that the coordinates of Q'(x, y) are (0.1).
How to apply rigid transformations on a point
Herein we must apply a rigid transformation into a given point to determine an image. Rigid transformations are transformations applied on a geometric locus such that Euclidean distance is conserved. Dilations are a kind of rigid transformations such that:
(x, y) → (k · x, k · y), for k > 0
If we know that Q(x, y) = (0, 2) and k = 0.5, then the coordinates of Q' are:
Q'(x, y) = (0.5 · 0, 0.5 · 2)
Q'(x, y) = (0, 1)
By applying the definitions of rigid transformation ((x, y) → (0.5 · x, 0.5 · y)) and dilation, we conclude that the coordinates of Q'(x, y) are (0.1).
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Answer: Q' = (0,1)
Step-by-step explanation: just did it on edge
AD= in
What is AD?
Help me please, thanks:)
Step-by-step explanation:
ATTACHED IS THE SOLUTION!Lucky’s Market purchased a new freezer for the store. When the freezer door stays open, the temperature inside rises. The table shows how much the temperature rises every 15 minutes. Find the unit rate.
The unit rate per minute is 2/3.
What is the unit rate?
In order to determine the unit rate, divide the temperature by the time. Division is the mathematical operation that is used to determine the quotient of a number.
Unit rate = temperature / time
10 / 15 = 2/3
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2.
Generate a frequency table for the following data: 3, 12, 25, 2, 3, 6, 17, 17, 15, 13, 20, 12, 21, 18, 19.
Use the ranges listed in the table:
Range Number of Values Relative Frequency
1 – 5
6 – 10
11 – 15
16 – 20
21 – 25
What is the relative frequency for the range 16 – 20?
0.4
0.33
0.2
.27
The relative frequency for the range 16 - 20 is 0.27.
What is the frequency of a data set?The frequency of a data set refers to the number of times a data or an event is occurring.
From the given information:
Range Number of values
1 - 5 3
6 - 10 1
11 - 15 4
16 - 20 5
21 - 25 2
Total 15
Relative Frequency = Subgroup frequency/ Total frequency
Relative Frequency for the range 16 - 20:
= 4/15
= 0.27
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Answer:
.27
Step-by-step explanation:
la mama de fabiana tiene un vivero. En su ultimo pedido compro 5 fresias, una con flores rojas, una con flores blancas, una con flores celestes y otra con flores violetas, 3 rosales, una con flores rojas, otro con flores rosas y otro con flores amarillas y 2 calas, una con flores blancas y otra con flores azules.
Me ayudan porfa.
Les doy puntos y coronita si me ayudan.
Porfa.
The computation shows that the number of flowers will be 10.
How to calculate the value?The information illustrates the flowers that were brought for the nursery.
Based on the information given, the total number of flowers bought for the nursery will be:
= 5 freesias + 3 rosebrushes + 2 calls lilies
= 10
In conclusion, the total number of flowers is 10.
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Write the domain and range of g using interval notation.
INTEGERS A frog starts at 0 on a number line. It jumps 100 units to the right then jumps 200 units to the left. It then jumps 199 units to the right followed by 198 units to the left, and then 197 units to the right followed by 196 units to the left. The frog continues to move in alternate directions. Each movement is 1 unit less than the previous movement.
Where on the number line is the frog after 10 moves?
On the number line after 10 moves frog is at the integer -96.
Given that, a frog starts at 0 on a number line.
It jumps 100 units to the right then jumps 200 units to the left=+100-200=-100 (2 moves).
It then jumps 199 units to the right followed by 198 units to the left =-100+199-198=-99 (2 moves).
It then jumps 197 units to the right followed by 196 units to the left =-99+197-196=-98 (2 moves).
It then jumps 195 units to the right followed by 194 units to the left =-98+195-194=-97 (2 moves).
It then jumps 193 units to the right followed by 192 units to the left =-97+193-192=-96 (2 moves).
Hence, on the number line after 10 moves frog is at the integer -96.
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A number from 1-50 is chosen at random. What is the probability of not selecting odd or a prime number?
Answer:
12/25
Step-by-step explanation:
total number of possible outcomes =50
number of possible outcomes =24
probability of not selecting odd or prime numbers
=24/50
=12/25
You have 73 trading cards. Your cousin says that
you have 7 less than half the cards he has. You
say you have 33 more than one-fourth the cards
he has. Can you both be right?
Using proportions, it is found that both can be right, as the amounts found from each operation are the same.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Considering you have 73 cards, and your cousin says that you have 7 less than half the cards he has, his amount is found as follows:
0.5x - 7 = 73
0.5x = 80
x = 160.
Then, one-fourth of his amount is:
(1/4) x 160 = 40.
33 more than this is:
33 + 40 = 73.
Both operations have results (73,160), hence the both can be right.
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10.one hundred and sixty-seven it students are transported by 3 buses to a workshop. there are 4 more students in the second bus than in the first bus and in the third bus there are 9 more students than in the second one. how many students are in each bus?
A machine wheel spins at a rate of 500 revolutions per minute. If the wheel has a diameter of 80 centimeters, what is the angular speed of the wheel, in radians per second?
The angular speed of the wheel is calculated as 52.36 radians per second
How to solve for the angular speedThe revolution of this wheel is said to be at 500 in a minute
This is also called the frequency of this wheel.
This can be written as
500rev in 60 seconds. 500/60 = 8.333 per second
Angular speed is given as
pi = 22/7
f = 8.333
Formular for angular speed = ω = 2*pi*f
w = 2 * 22/7 * 8.333
= 52.36 radians per second
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Find in degrees.
11
B
6
[?]°
Round to the nearest hundredth.
Enter
Answer:
[tex] \beta = 28.610[/tex]
Step-by-step explanation:
in this case we have a right angled triangle, whenever you see this triangle think of the TRIG RATIOS * sin, cos & tan* but if it was another triangle besides right angled triangle you use SINE RULE OR COSINE RULE
SOLUTION
[tex] \tan( \beta ) = \frac{opposite}{adjecent} \\ \tan( \beta ) = \frac{6}{11} \\ \beta = tan(inverse)( \frac{6}{11} ) \\ \beta = 28.61045[/tex]
Triangle JKL is transformed to create triangle J'K'L'. The angles in both triangles are shown.
AngleJ = 90° AngleJ' = 90°
AngleK = 65° AngleK' = 65°
AngleL = 25° AngleL' = 25°
Which statement is true about this transformation?
It is a rigid transformation because the pre-image and image have the same corresponding angle measures.
It is not a rigid transformation because the corresponding side lengths are not equal.
It can be a rigid or a nonrigid transformation depending on whether the corresponding side lengths have the same measures.
It can be a rigid or a nonrigid transformation because a pair of corresponding angles measures 90°.
Triangle JKL is transformed to create triangle J'K'L'. It can be a rigid or a non rigid transformation depending on whether the corresponding side lengths have the same measures.
What is a transformation?Transformation is the movement of a point from its initial location to a new location. Types of transformation are translation, rotation, reflection and dilation.
Dilation is the increase or decrease in the size of a figure.
A rigid transformation such as reflection, rotation and translation preserve the shape and size, hence the pre-image and image have the same corresponding angle and side measures.
A non rigid transformation such as dilation preserve the shape and not size, hence the pre-image and image have the same corresponding angle measures.
Triangle JKL is transformed to create triangle J'K'L'. It can be a rigid or a non rigid transformation depending on whether the corresponding side lengths have the same measures.
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Answer:
C
Step-by-step explanation:
2023
solve for: 3x-91>-87 AND 17x-16>18
a) x>2
b) x>4/3
c) 4/3d) there are no solutions
The correct answers are option an x>2 for inequality 17x-16>18 and option b x>(4/3) for an inequality 3x-91>-87.
What is inequality?
The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than, or < ‘less than.
Given inequalities are:-
3x-91>-87 AND 17x-16>18The inequalities will be solved as:-
i ) 3x - 91 > -87
3x > -87 + 91
3x > 4
x > ( 4 / 3 )
ii) 17x-16>18
17x > 18 + 16
17x > 34
x > 34 /17
x > 2
Therefore the correct answers are option an x>2 for inequality 17x-16>18 and option b x>(4/3) for an inequality 3x-91>-87.
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Find x so that l || m.
Hello,
Answer:
x = 20
Step-by-step explanation:
3x + 10 = 4x - 10
⇔ 4x - 3x = 10 + 10
⇔ x = 20
Answer:
20
Step-by-step explanation:
Since l ll m
( 3x + 10 ) and ( 4x - 10 ) are alternate exterior angles,
Property of parallel lines ( ll ) : -
Alternate exterior angles are equal.
4x - 10 = 3x + 10
4x - 3x = 10 + 10
x = 20
What is the relationship between the domain and range of a relation and its inverse?
Answer:
the x-values of the relation are the y-values of the inverse.
Find the surface area of a cube with a side length of 8 m
Answer:
384 m²
Step-by-step explanation:
The formula to find the surface area of a cube is:
S.A. = 6a²
Here,
a ⇒ length of a side ⇒ 8m
Let us solve it now.
S.A. = 6a²
S.A. = 6 × 8 × 8
S.A. = 48 × 8
S.A. = 384 m²
Question 3(Multiple Choice Worth 4 points)
(01.05 LC)
Solve for x: 3
06
06>x>9
00
00>x>3
The value of x from the given equation is ±√10
Solving linear equationsLinear equations are equation that has a leading degree of 1. Given the equation below:
Given the equation below;
x² = 10
Take the square root of both sides
√x² = ±√10
x = ±√10
Hence the value of x from the given equation is ±√10
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suppose f(x)=x+3 find the graph of f(2x)
Answer:
2x + 3Step-by-step explanation:
f(2x) means that we have to substitute x with 2x
So, the answer is
2x + 3