One airplane is located 200 km north and 50 km east of an airport. A second plane at the same altitude is located 30 km north and 100 km north and 100 km west.
The distance between the planes is closest to:
A. 150 km
B. 200 km
C. 300 km
D. 350 km
E. 400 km
Answers
Answer: B
Step-by-step explanation:
We can define the North as our positive y-axis, and the East as the positive x-axis.
The position of the airport is the (0, 0)
Then the position of the first plane is: (200 km north and 50 km east)
(50km, 200km)
The position of the other plane is: (30 km north and 100 km west)
(-100km, 30km)
Now, if we have two points (a, b) and (c, d)
The distance between those points is:
D = √( (a - c)^2 + (b - d)^2)
Then the distance between the planes is:
D = √( (50km - (-100km))^2 + (200km - 30km)^2)
D = √( (150km)^2 + (170km)^2)
D = 226.7km
Then the distance is closest to 200km, the correct option is B.
On a coordinate plane, we have:
North represents the positive y-axisSouth represents the negative y-axisEast represents the positive x-axisWest represents the negative x-axisThe closest distance between the planes is 200km
The positions of the two planes is given as:
[tex]A = (50,200)[/tex] --- 50km east and 200km north
[tex]B = (-100,30)[/tex] --- 100km west and 30km north
The distance between the planes is calculated using the following distance formula:
[tex]d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}[/tex]
So, we have:
[tex]d = \sqrt{(50--100)^2 + (200-30)^2}[/tex]
[tex]d = \sqrt{150^2 + 170^2}[/tex]
[tex]d = \sqrt{51400}[/tex]
[tex]d = 226.72km[/tex]
From the list of given options, 200km is the closest to 226.72km
Hence, the closest distance between the planes is 200km
See attachment for the positions of both planes
Read more about distance at:
https://brainly.com/question/16310813
Related Questions
Is -4 a irrational number?
Answers
Answer:
No.
Step-by-step explanation:
Irrational numbers are numbers that you can't solve like 3 squared. See you can't find the end of 3 squared, the numbers will go on forever just like pi.
Answer:
No
Step-by-step explanation:
A rational number can be written as the ratio of integers
-4/-1 = -4
This is a rational number
If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean equals 500 if you use the Z test
Answers
Answer:
Our decision rule will be to reject The null hypothesis H0 if the test statistic is less than -1.645, or if it is greater than +1.645.
Step-by-step explanation:
The hypotheses would be;
Null hypothesis;H0: μ = 500
Alternative hypothesis;Ha: μ ≠ 500
Since it's two - tailed at 0.1 level of significance, then each tail will contain 5% or 0.05. From the z-table attached, the corresponding critical value of 0.05 is approximately 1.645 standard deviations from the mean.
Thus, our decision rule will be to reject The null hypothesis H0 if the test statistic is less than -1.645, or if it is greater than +1.645.
You believe the population is normally distributed. Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to twp decimal places.
Answers
You intend to estimate a population mean μ from the following sample. 26.2 27.7 8.6 3.8 11.6 You believe the population is normally distributed. Find the 80% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to twp decimal places.
Answer:
The Confidence interval = (8.98 , 22.18)
Step-by-step explanation:
From the given information:
mean = [tex]\dfrac{ 26.2+ 27.7+ 8.6+ 3.8 +11.6 }{5}[/tex]
mean = 15.58
the standard deviation [tex]\sigma[/tex] = [tex]\sqrt{\dfrac{\sum(x_i - \mu)^2 }{n}}[/tex]
the standard deviation = [tex]\sqrt{\dfrac{(26.2 - 15.58)^2 +(27.7 - 15.58)^2 +(8.6 - 15.58)^2 + (3.8 - 15.58)^2 + (11.6 - 15.58)^2 }{5 } }[/tex]
standard deviation = 9.62297
Degrees of freedom df = n-1
Degrees of freedom df = 5 - 1
Degrees of freedom df = 4
For df at 4 and 80% confidence level, the critical value t from t table = 1.533
The Margin of Error M.O.E = [tex]t \times \dfrac{\sigma}{\sqrt{n}}[/tex]
The Margin of Error M.O.E = [tex]1.533 \times \dfrac{9.62297}{\sqrt{5}}[/tex]
The Margin of Error M.O.E = [tex]1.533 \times 4.3035[/tex]
The Margin of Error M.O.E = 6.60
The Confidence interval = ( [tex]\mu \pm M.O.E[/tex] )
The Confidence interval = ( [tex]\mu + M.O.E[/tex] , [tex]\mu - M.O.E[/tex] )
The Confidence interval = ( 15.58 - 6.60 , 15.58 + 6.60)
The Confidence interval = (8.98 , 22.18)
4-2(3+2) ²
2.
Help me plz i need the help
Answers
Answer:
-46 is your answer.
Step-by-step explanation:
=4-2(3+2)^2
=4-2(5)^2
=4-2(5✖️5)
=4-2(25)
Opening brackets to simplify
=4-50
=-46 is your answer.
Hope it will help you :)
Answer:
-46
Step-by-step explanation:
[tex]4 - 2(3 + 2)^{2} \\ [/tex]
PEDMAS
[tex]4 - 2(5)^{2} \\ 4 - 2(25) \\ 4 - 50 \\ = - 46[/tex]
A motorcyclist starts from rest and reaches a speed of 6m/s after travelling with uniform acceleration for 3s .
the question is what is his acceleration?
by calculation
Answers
Acceleration = final speed - initial speed / time
Acceleration = 6 m/s - 0 / 3s
Acceleration = 6m/s / 3s
Acceleration = 2 m/s^2
Answer:
[tex]\Huge \boxed{\mathrm{2 \ m/s^2 }}[/tex]
Step-by-step explanation:
[tex]\displaystyle acceleration = \frac{final \ velocity - initial \ velocity}{elapsed \ time}[/tex]
[tex]\displaystyle A = \frac{V_f - V_i}{t}[/tex]
The initial velocity is 0 m/s.
The final velocity is 6 m/s.
The elapsed time is 3 s.
[tex]\displaystyle A = \frac{6 - 0}{3}[/tex]
[tex]\displaystyle A = \frac{6}{3}=2[/tex]
The acceleration is 2 m/s².
In ΔKLM, the measure of ∠M=90°, the measure of ∠L=18°, and KL = 8.3 feet. Find the length of MK to the nearest tenth of a foot.
Answers
Answer:
2.6 ft
Step-by-step explanation:
8.3/sin 90 = MK/sin 18
MK = 8.3 sin 18 / sin 90
MK = 2.6 ft
Answer:
2.6
Step-by-step explanation:
It is never possible for the theoretical and experimental probabilities to be the same. T or F
Answers
Answer:
False
Step-by-step explanation:
Right on Odyssey
It is never possible for the theoretical and experimental probabilities to be the same which is false.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
Theoretical and experimental probability can be the same in some circumstances.
For example, the theoretical and experimental chance of rolling a fair six-sided dice and receiving a 3 is 1/6. However, the theoretical and experimental probabilities will differ in many other cases due to factors such as sampling error or differences between the idealized model and the real-world situation.
Thus, the statement is false.
More about the probability link is given below.
https://brainly.com/question/795909
#SPJ3
Find the absolute extrema for f(x,y)=4-x^2-y^4+1/2y^2 over the closed disk D:x^2+y^2 is less than or equal to 1
Answers
Find the critical points of [tex]f(x,y)[/tex]:
[tex]\dfrac{\partial f}{\partial x}=-2x=0\implies x=0[/tex]
[tex]\dfrac{\partial f}{\partial y}=y-4y^3=y(1-4y^2)=0\implies y=0\text{ or }y=\pm\dfrac12[/tex]
All three points lie within [tex]D[/tex], and [tex]f[/tex] takes on values of
[tex]\begin{cases}f(0,0)=4\\f\left(0,-\frac12\right)=\frac{65}{16}\\f\left(0,\frac12\right)=\frac{65}{16}\end{cases}[/tex]
Now check for extrema on the boundary of [tex]D[/tex]. Convert to polar coordinates:
[tex]f(x,y)=f(\cos t,\sin t)=g(t)=4-\cos^2-\sin^4t+\dfrac12\sin^2t=3+\dfrac32\sin^2t-\sin^4t[/tex]
Find the critical points of [tex]g(t)[/tex]:
[tex]\dfrac{\mathrm dg}{\mathrm dt}=3\sin t\cos t-4\sin^3t\cos t=\sin t\cos t(3-4\sin^2t)=0[/tex]
[tex]\implies\sin t=0\text{ or }\cos t=0\text{ or }\sin t=\pm\dfrac{\sqrt3}2[/tex]
[tex]\implies t=n\pi\text{ or }t=\dfrac{(2n+1)\pi}2\text{ or }\pm\dfrac\pi3+2n\pi[/tex]
where [tex]n[/tex] is any integer. There are some redundant critical points, so we'll just consider [tex]0\le t< 2\pi[/tex], which gives
[tex]t=0\text{ or }t=\dfrac\pi3\text{ or }t=\dfrac\pi2\text{ or }t=\pi\text{ or }t=\dfrac{3\pi}2\text{ or }t=\dfrac{5\pi}3[/tex]
which gives values of
[tex]\begin{cases}g(0)=3\\g\left(\frac\pi3\right)=\frac{57}{16}\\g\left(\frac\pi2\right)=\frac72\\g(\pi)=3\\g\left(\frac{3\pi}2\right)=\frac72\\g\left(\frac{5\pi}3\right)=\frac{57}{16}\end{cases}[/tex]
So altogether, [tex]f(x,y)[/tex] has an absolute maximum of 65/16 at the points (0, -1/2) and (0, 1/2), and an absolute minimum of 3 at (-1, 0).
Anyone help?? A screenshot is attached below
Answers
Answer:
113°
Step-by-step explanation:
By remote interior angle theorem:
a + 35° = a - 30° + a - 48°
a + 35° = 2a - 78°
35° + 78° = 2a - a
113° = a
a = 113°
pt 3 2-7 pleasee helpp
Answers
Answer:
-3x - 6 - 1
- 3x + 7
4x
Step-by-step explanation:
3/7 is it< or> then 3/5
Answers
Two ways of solving:
1. Convert the fractions to decimals:
3/7 = 0.42857
3/5 = 0.6
0.42857 < 0.6
So 3/7 < 3/5
Second way is to rewrite the fractions with a common denominator:
3/7 = 15/35
3/5 = 21/35
Now compare the numerators:
15 < 21 so 3/7 < 3/5
sameer usually drinks 3 cups of coffee in the morning. How many liters of coffee does he drink? Round your answer to the nearest tenth
Answers
Answer: 0.7 liters
Step-by-step explanation:
First convert 3 cups to Liters
3 cups = 0.709765
Now round 0.709765 to the nearest 10 which give you 0.7
Answer:
0.7 liters Hope this helps!
Step-by-step explanation:
Please help! Find the domain of y = 4 square root 4x + 2
Answers
Answer:
x ≥ -1/2
Step-by-step explanation:
We know that we cannot graph imaginary numbers. Therefore, our x value has to be greater than or equal to 0:
To find our domain, we need to set the square root equal to zero:
√(4x + 2) = 0
4x + 2 = 0
4x = -2
x = -1/2
We now know that no value below -1/2 can be used or we will get an imaginary number. Therefore, our answer is x ≥ -1/2
Alternatively, we can graph the function and analyze domain:
On a distant planet, a ball is thrown upwards from ground level , reaching a maximum height of 12m and hitting the ground again in eight seconds. Determine a quadratic equation in the form a * x ^ 2 + bx + + c =0 that could be used to calculate when the ball is a height of 3m. Do not solve the equation
Answers
Answer:
(-3 ÷ 4)x^2 + 6x
Step-by-step explanation:
Data provided in the question
Maximum height = 12m
Number of seconds = 8
Height = 3m
Based on the above information, the quadratic equation is as follows
Since it took 8 seconds for reaching the maximum height and then it returned to the ground level so here the highest point is done after 4 seconds also this graph represents the motion in parabola so the a should be negative
Now it is mentioned that
a × x ^ 2 + bx + c =0
We can assume that
x = 0
x = 8
As these {0.8} are intercepts of x
When x = 0, then it would be
a × 0 ^ 2 + b(0) + c = 0 .................... (i)
Therefore 0 = 0
Now x = 8, it would be
a × 8 ^ 2 + b(8) + c = 0
Therefore a(8)^2 + b(8) + c = 0 ..................(ii)
As we can see that in the first equation c should be zero
While the second equation would be
64a + 8b = 0
i.e.
8a = -b or a = -b ÷ 8
Now as per the quadratic function, it appears
(-b ÷8)x^2 + bx + 0
Now the parabola vertex is (4, 12)
Now put this in the place of a
(-b ÷ 8)(4)^2 + b(4) = 12
Now for solving this b, all terms should be multiplied by 8
That comes
-b(16) + 32b = 96
16b = 96
So, b = 6.
As a = -b ÷8
a = -6 ÷ 8
a = -3 ÷4
Now the equation is
= (-3 ÷ 4)x^2 + 6x
Hence, this is the equation
Will mark brainliest who answers fastest and right
Answers
Answer: 330 people
Step-by-step explanation:
added them all up
In which set(s) of numbers would you find the number
67
Orational number
irrational number
O whole number
integer
O natural number
O real number
Answers
Answer:
Rational
Explanation: because it can be expressed in the quotient of two integers:67÷1
If A is the set of all natural numbers, choose the set B that will make the following statement true
(See photo)
Answers
Answer:
b= {1,2,3,4} is the answer
at a maximum speed an airplane travels 2100 miles against the wind in 6 hours. Flying with the wind, the plane travel the same distance in 4 hours. what is the speed of the plane with no wind?
Answers
Step-by-step explanation:
Let w be the speed of wind and v be speed of airplane without wind.
[tex]average \: speed = \frac{total \: distance }{total \: time} [/tex]
(A)
[tex]speed \: against \: wind( v - w) = \frac{2100}{6} = 350mph[/tex]
(B)
[tex]speed \: with \: wind(v + w) = \frac{2100}{4} = 525mph[/tex]
(C)
Adding equations A and B, we get :
(v - w) + (v + w) = 350 + 525
2v = 875
V = 437.5 mph
If the principal is $350 and the interest rate is 3 percent, what is the simple interest earned in one year?
simple interest = Pxrxt
Answers
Answer:
The simple interest earned in one year is $10.5
Step-by-step explanation:
Simple interest = p × r × t
Where,
p = principal
r = interest rate
t = time
Principal= $350
Interest rate = 3%
=3/100
=0.03
Time= 1 year
Simple interest = p × r × t
= $350 × 0.03 × 1
= $10.5
The simple interest earned in one year is $10.5
(10c^6d^-5)(2c^-5d^4)
Answers
10c^6d^-5×2c^-5d^4
20cd^-1
20c×1/d
20c/d
What is 25+543\43 squared
Answers
Answer:
i think the answer is 0.3071
Step-by-step explanation:
But I might be wrong
123567543 what is the value of 3
Answers
Answer:
3 would be 3 million
Step-by-step explanation:
HELP ASAP ROCKY!!! will get branliest.
Answers
Answer:
Graph B
Step-by-step explanation:
In a negative linear association between x and y, we are looking for a graph that:
A. Doesn't curve - is completely straight
B. Decreases in y as x increases (because slope is rise over run)
We know that graphs C and D are eliminated because they aren't linear.
We can also tell that graph A is eliminated because it shows a positive association.
So Graph B is all that's left.
Hope this helped!
Answer:
Graph B
Step-by-step explanation:
A negative linear equation has a straight line that goes down, making B the answer.
The quotient of a number and 7 is equal to 13
Answers
Answer:
91
Step-by-step explanation: 7*13 = 91
91/7 = 13
What is 0.658 rounded to 1 significant figure?
Answers
Answer: 0.07 calculatorsoup for significant rounding
Use the given confidence interval limits to find the point estimate p^ and the margin of error E. 0.325
Answers
Answer:
0.350
Step-by-step explanation:
Confidence interval = point estimate ± margin of error
Point estimate = Confidence interval - margin of error
To get the margin of error, we will take the average of the difference of the interval given. Given the confidence interval 0.325<p<0.375
Margin of error = 0.375-0.325/2
Margin of error = 0.050/2
Margin of error = 0.025
Using the interval of 0.375
Point estimate = 0.375 - 0.025
Point estimate = 0.350
Calculate the surface area of the prism. Measurements are in centimetres
Please help me asap!!!! The correct answer is 2804
Answers
Answer:
2804 cm²
Step-by-step explanation:
Total area comprises of 6 faces: 2 trapezoids and 4 rectangles
Trapezoid = 1/2*(14+32)*24 = 552 cm² eachBottom = 17*32 = 544 cm²Top = 14*17 = 238 cm²Right side = 17*24 = 408 cm²Left side = 17*√((24² + (32-14)²) = 17* √900 = 17*30 = 510 cm²Total area:
552*2 + 544 + 238 + 408 + 510 = 2804 cm²
Find the sum of (root2+root3)+(root3-root7)+(root7-root2
Answers
Answer:
Step-by-step explanation:
√2 + √3 + √3 - √7 + √7 - √ 2
by changing the position
√2 - √2 + √3 + √3 - √7 + √7
√2 and -√2 gets canceled
-√7 and √7 gets cancelled
we are left out with √3 + √3
√3 + √3 gives 2√3
so the answer is 2√3
hope this helps
plz mark as brainliest!!!!!!!!
Evaluate 8/13 divided by 2/3
Answers
Answer:
24/26
Step-by-step explanation:
8/13 divided by 2/3 is the same as:
8/13 times 3/2
8X3= 24
13X2= 26
answer = 24/26
Answer:
12 / 13
Step-by-step explanation:
8 / 13 ÷ 2 / 3 ------ just flip 2/3 to --->> 3/2 then multiply
8 / 13 x 3 / 2 = (8 * 3) / (13 * 2)
= 24 / 26
therefore,
= 12 / 13 is the answer
v−6(−3v+3) how do i do this and can you show me with work
Answers
Answer:
19v - 18
Step-by-step explanation:
Hello!
v - 6(-3v + 3)
Distribute the -6
-6 * -3v = 18v
-6 * 3 = -18
v + 18v -18
Combine like terms
19v - 18
The answer is 19v - 18
Hope this helps!
Answer:
V=6;v=1
Step-by-step explanation:
(V-6)(-3v+3)
-3v^2+3v+18v-18
-3v^2+21v-18
Multiple it by minus one we will get
3v^3-21v+18
Now breaking by midterm
3v^2-18v-3v+18
3v(v-6)-3(v-6)
(V-6)(3v-3)
V=6;v=1