Answer:
After 3 hours, both the airplanes are at a distance of 938.9 meters from each other.
Step-by-step explanation:
Speed of plane A = 275 mph
Speed of plane B = 375 mph
Angle between their flight path = Ф = 55°
Let their paths after 3 hours make a triangle.
Path of plane A is side 'a' = 275*3 = 825
Path of plane B is side 'b' = 375*3 = 1125
Distance between both planes after 3 hours = side 'c'
Here, we have two sides and one angle of the triangle.
We can find the third side using the law of cosines which is given as:
c² = a² + b² - 2ab*cosФ
c² = 825² + 1125² - 2(825)(1125)(cos(55°))
c² = 680625 + 1265625 - 1064745 where cos(55°) = 0.5736
c² = 881,505
c = √881,505
c = 938.9
c = 938.9 meters
Compare and Contrast: Two equations are listed below. Solve each equation and compare the solutions. Choose the statement that is true about both solutions.
Equation 1 Equation 2
|5x + 6| = 41 |2x + 13| = 28
Answer:
The absolute vale of x in equation 2 is greater than the absolute value of x in equation 1
Step-by-step explanation:
Equation 1
|5x + 6| = 41.......................finding the absolute value of x
5x+6=41
5x=41-6
5x=35........................divide by 5 both sides
x=35/5= 7
|x|=7
Equation 2
|2x + 13| = 28........................find the absolute value of x
2x+13=28
2x=28-13
2x=15........................................divide by 2 both sides
x=15/2 =7.5
|x|=7.5
Conclusion
The absolute vale of x in equation 2 is greater than the absolute value of x in equation 1
Answer:
Solution of inequality 1:
[tex]x \in [\frac{-47}{5}, 7][/tex]
Solution of Inequality 2:
[tex]x \in [\frac{-41}{2}, \frac{15}{2}][/tex]
Step-by-step explanation:
We are given two inequalities:
Inequality 1
[tex]\mid 5x + 6 \mid = 41\\-41 \leq 5x + 6 \leq 41\\-47 \leq 5x \leq 35\\\frac{-47}{5} \leq x \leq 7\\x \in [\frac{-47}{5}, 7][/tex]
Inequality 2
[tex]\mid 2x + 13 \mid = 28\\-28 \leq 2x +13 \leq 28\\-41 \leq 2x \leq 15\\\frac{-41}{2} \leq x \leq \frac{15}{2}\\x \in [\frac{-41}{2}, \frac{15}{2}][/tex]
Solution of inequality 1:
[tex]x \in [\frac{-47}{5}, 7][/tex]
Solution of Inequality 2:
[tex]x \in [\frac{-41}{2}, \frac{15}{2}][/tex]
Can you help me with the top one please thnx
Answer:
1:4
Step-by-step explanation:
24 divided by 6 is 4. and 6 divided by 6 is 1
Answer:
1:4
Step-by-step explanation:
24÷6=4 and 6÷6=1 this is all you need
I need help with number 4 I can’t get an answer
Answer:
14.93
Step-by-step explanation:
For this problem you need to know distance formula, which is
d=√(x2-x1)²+(y2-y1)². You'll want to plug in (0,3) and (-2, 9) and go on to plug in all of them at some point. You'll get 6.32 as the distance between (0,3) and (-2, 9), 3.61 as the distance between (-2, 9) and (-4, 6), and 5 as the distance between (-4, 6) and (0, 3). You add them up and get your answer.
true or false one milliliter of water has a mass of 2.00 grams
Answer:
false
Step-by-step explanation:
One milliliter of water has one gram of mass, and weighs one gram in typical situations
One milliliter of water does not have a mass of 2.00 grams.
Water has a density of 1g/mL, so one milliliter of water has a mass of 1 gram.
which set of rectangular coordinates describes the same location as the polar coordinates (-2,2pi)
[tex]\bf (\stackrel{\stackrel{r}{\downarrow }}{-2}~~,~~\stackrel{\stackrel{\theta }{\downarrow }}{2\pi })\qquad \begin{cases} x=&rcos(\theta )\\ &(-2)cos(2\pi )\\ &(-2)(1)\\ &-2 \\\cline{1-2} y=&rsin(\theta )\\ &(-2)sin(2\pi )\\ &(-2)(0)\\ &0 \end{cases}\qquad \implies \qquad (\stackrel{x}{-2}~,~\stackrel{y}{0})[/tex]
Answer:
y = rsen (θ)
So for r = -2 and θ = 2π we have
x = -2cos (2π)
x = -2
y = -2sen (2π)
y = 0
Finally the equivalent point in Cartesian coordinates is the point:
(-2 0)
Step-by-step explanation:
Solve 2x2 + 12x - 14 = 0 by completing the square
Answer:
x = -7 or x = 1Step-by-step explanation:
[tex](a+b)^2=a^2+2ab+b^2\qquad(*)\\\\\\2x^2+12x-14=0\qquad\text{divide both sides by 2}\\\\x^2+6x-7=0\qquad\text{add 7 to both sides}\\\\x^2+2(x)(3)=7\qquad\text{add}\ 3^2=9\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=7+9\\\\(x+3)^2=16\Rightarrow x+3=\pm\sqrt{16}\\\\x+3=-4\ or\ x+3=4\qquad\text{subtract 3 from both sides}\\\\x=-7\ or\ x=1[/tex]
a cityhas a population density of approximately 46 people per square mile.if the city is 6,521.74 mi2, then approximately how many people live in that city
Answer:
[tex]300,000.04\ people[/tex]
Step-by-step explanation:
we know that
To find how many people live in that city multiply the population density by the area of the city
so
[tex](46\ \frac{people}{mi^{2}})(6,521.74\ mi^{2})=300,000.04\ people[/tex]
The function shown in the graph is vertically stretched by a factor of 2 to produce a new graph.
Which function represents the new graph?
Answer: Third option.
Step-by-step explanation:
We know that the sine function is:
[tex]f(x)=Asin(bx)[/tex]
Where "A" is the amplitude of the function( This is half the vertical distance between minimum value and maximum value of the function) and [tex]\frac{2\pi }{b}[/tex] is the period.
Observe in the graph that the amplitude is:
[tex]A=1[/tex]
And the period is 1, then "b" is:
[tex]1=\frac{2\pi }{b}\\\\b=\frac{2\pi }{1}\\\\b=2\pi[/tex]
Then the function shown in the graph is:
[tex]f(x)=sin(2\pi x)[/tex]
By definition in the transformation of the function:
When [tex]kf(x)[/tex] and [tex]k>1[/tex] then the function is stretched vertically by a factor of "k".
In this case we know that the function shown in the graph is vertically stretched by a factor of 2 to produce a new graph. Then:
[tex]k=2[/tex]
Therefore,the function that represents the new graph is:
[tex]f(x)=2sin(2\pi x)[/tex]
how do you simplify this rational expression? please show your work.
Answer:
3(x-2)÷(x-2)=3.....
Answer:
3Step-by-step explanation:
[tex]3x-6\qquad\text{distributive}\\\\=(3)(x)-(3)(2)=(3)(x-2)=3(x-2)\\\\\dfrac{3x-6}{x-2}=\dfrac{3(x-2)}{x-2}\qquad\text{cancel}\ (x-2)\\\\=\dfrac{3(1)}{1}=3[/tex]
how many terms does the polynomial have?
3 terms. Just count the terms (which are separated by the +/- signs)
The answer is:
The polynomial have 3 terms. (it's a trinomial).
Why?A polynomial is an expression which consists of one or more terms (numbers or variables) being added or subtracted.
So, we are given the polynomial:
[tex]x^{2} +xy-y^{2}[/tex]
We have that there are three terms separated by differents being added and subtracted, so, the polynomial has 3 terms, and it's a trinomial.
Have a nice day!
State if each angle is an inscribed angle. If it is name the angle and the intercepted arc.
Answer:
Part 1) The inscribed angle is the angle ∠TRS and the intercept arc is the arc LST
Part 2) The inscribed angle is the angle ∠YWX and the intercept arc is the minor arc XY
Part 3) The inscribed angle is the angle ∠YXZ and the intercept arc is the arc YBZ
Part 4) The figure does not show an inscribed angle
Step-by-step explanation:
Part 1) The figure shown a inscribed angle
The inscribed angle is the angle ∠TRS
The intercept arc is the arc LST
Remember that
The inscribed angle measures half that of the arc comprising
so
∠TRS=(1/2)[arc LST]
Part 2) The figure shown a inscribed angle
The inscribed angle is the angle ∠YWX
The intercept arc is the minor arc XY
Remember that
The inscribed angle measures half that of the arc comprising
so
∠YWX=(1/2)[minor arc XY]
Part 3) The figure shown a inscribed angle
The inscribed angle is the angle ∠YXZ
The intercept arc is the arc YBZ
Remember that
The inscribed angle measures half that of the arc comprising
so
∠YXZ=(1/2)[arc YBZ]
Part 4) The figure does not show an inscribed angle
The figure shown a interior angle ∠BAC
Find the length of a square with an area of 169 in2.
A. 338 in
B. 106 in
C. 26 in
D. 13 in
Find the length of a side of a square with an area of 169 in^2.
Answer:
D. 13 in
Step-by-step explanation:
A square has sides of equal length.
A = L^2 where: A = area and L = side
L^2 = 169
L=√169
L=13 in^2.
The length of a side of a square with an area of 169 in2 is calculated by taking the square root of the area, which is 13 inches. The correct answer is D. 13 in.
The student is asking to find the length of a side of a square given that the area of the square is 169 square inches. The formula to calculate the area of a square is side length squared, which can be written as:
Area = side × side
To find the side length, we need to take the square root of the area:
Side = √169
Upon calculation, the side length is:
Side = 13 {in}
Therefore, the correct answer is D. 13 in.
is the number 1 Prime
Answer:
No.
Step-by-step explanation:
To be prime, it has to be a number more than 1.
Answer:
No
Step-by-step explanation:
The number 1 is only divisible by itself, so it is neither prime nor composite.
Can u plz solve it asap with explanation. Thank you.
okay so you should know that the formula for a triangle is:
A=1/2×b×h
where b is breadth and h is height
A is area
so they already gave the area which is 16.2 and they already gave a side ( doesn't matter if it's b or h in this question)
so we put these into the equation of the area of a triangle
A=1/2×b×h
16.2=1/2 × 6 × h
then you will solve algebraically to get 5.4cm which is you answer
to check if correct you can always put in all numbers in equation and you should get 16.2cm
In this case it's correct ✌
Answer:
AC = 5.4 cm
Step-by-step explanation:
The area (A) of a triangle is calculated using the formula
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
here AC is the base (b) and AB the height (h), thus
[tex]\frac{1}{2}[/tex] × AC × 6 = 16.2
3AC = 16.2 ( divide both sides by 3 )
AC = 5.4 cm
Shyanne drops a rock from a hill at initial height of 975 feet above ground level. How many seconds after the rock is released will it hit the ground below
61 seconds
7.8secdons
5.2 seconds
11.6seconds
Answer:
61 second I would say but what is the weight of the rock?
Answer:
Option B. 7.8 seconds
Step-by-step explanation:
Shyanne drops a rock from a hill at initial height of 975 feet above the ground level.
We have to calculate the time taken by rock to hit the ground.
As we know the formula of motion under gravity is
h = ut + [tex]\frac{1}{2}gt^{2}[/tex]
Here h = initial height = 975 feet
u = initial velocity = 0
t = time taken by the rock to hit the ground
g = 32.174 [tex]\frac{\text{Feet}}{\text{Second}^{2}}[/tex]
Now we plug in these values in the formula
975 = 0 + [tex]\frac{1}{2}(32.174)(t)^{2}[/tex]
975 = 16.087t²
t² = [tex]\frac{975}{16.087}[/tex]
t = [tex]\sqrt{60.60}[/tex]
t = 7.78 ≈ 7.8 seconds
Option B. 7.8 seconds is the answer.
If the blue radius below is perpendicular to the green chord and the segment AB is 11 units long, what is the length of the chord
B 22
11+11=22
AC is the chord
Answer:
B. 22 units.
Step-by-step explanation:
A perpendicular dropped from center to a chord bisects the chord.
In the given figure O is the center of the circle .OB is a perpendicular dropped from center of circle to the chord AC and hence it bisects the chord .
AB=BC= 11 units .
By addition of line segments :
Length of chord AC = AB+BC =11+11 = 22 units.
Two fair dice are rolled
What is the SAMPLE SPACE of the possible outcomes?
SHOW YOUR WORK!
ANSWER
See sample space below
EXPLANATION
The sample space refers to the set of all the possible outcomes.
When two fair dice are rolled, the possible by outcomes are:
{(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),(5,1),(5,2),(5,3),(5,4),(5,5),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)}
The total number of outcomes is 36.
The box plots below show the lifespan, in months, of laptop batteries manufactured by four companies:
box plot labeled Company A shows minimum at 19, first quartile at 19.5, median at 23, third quartile at 23.5, and maximum at 24. Company B shows minimum at 21, first quartile at 22, median at 24, third quartile at 25, and maximum at 26. Company C shows minimum at 20, first quartile at 21, median at 22, third quartile at 24, and maximum at 28. Company D shows minimum at 19, first quartile at 20, median at 22.5, third quartile at 23.5, and maximum at 27.
Based on the data, which company manufactures batteries having the greatest variation in lifespan?
Company A
Company B
Company C
Company D
Company C and Company D both manufacture batteries having the greatest variation in lifespan, which is an 8 month variation. This was determined by calculating the range of each data set.
Explanation:The variation in lifespan for each company's laptop battery can be determined by looking at the range of the data, which is found by subtracting the smallest value (minimum) from the largest value (maximum). So we have:
Company A: 24 - 19 = 5 Company B: 26 - 21 = 5 Company C: 28 - 20 = 8 Company D: 27 - 19 = 8
As we can see, Company C and Company D both have the greatest variation in lifespan of their laptop batteries, with a range of 8 months.
Learn more about Box Plot here:https://brainly.com/question/12591498
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If Logx (1 / 8) = - 3 / 2, then x is equal to
A. - 4
B. 4
C. 1 / 4
D. 10
Answer:
B
Step-by-step explanation:
Using the rule of logarithms
• [tex]log_{b}[/tex] x = n ⇔ x = [tex]b^{n}[/tex]
Given
[tex]log_{x}[/tex] ([tex]\frac{1}{8}[/tex] ) = - [tex]\frac{3}{2}[/tex], then
[tex]\frac{1}{8}[/tex] = [tex]x^{-\frac{3}{2} }[/tex]
Square both sides
[tex]\frac{1}{64}[/tex] = [tex]x^{-3}[/tex]
[tex]4^{-3}[/tex] = [tex]x^{-3}[/tex] ⇒ x = 4 → B
What is the volume of the pyramid
Answer:
[tex]\frac{1}{3}(base area)(height)[/tex]
Step-by-step explanation:
Hi!
For the Pyramid´s volume equation is referred to one third of the area base multiply for the height of the pyramid. Take into account that the base area just going to change for the kind of base you will have into the pyramid, for example if the base is rectangular you have to use the equation a for it while for a triangular base you have to use equation b
Equation a
base X height
Equation b
base X (height)/2
Given the function y=-3x + 7, which set of numbers completes the table?
INPUT OUTPUT
4 19
-2
0
2
A.
1, 7, 13
OB. 14, 9,4
c.
13, 7,1
D.
-1, -7, -13
Answer:
C 13,7,1
Step-by-step explanation:
The given expression is [tex]y=-3x+7[/tex].
To find the corresponding y-values, we need to plug in the x-values.
When x=-2, [tex]y=-3(-2)+7[/tex], [tex]\implies y=6+7=13[/tex]
When x=0, [tex]y=-3(0)+7[/tex], [tex]\implies y=0+7=7[/tex]
When x=2, [tex]y=-3(2)+7[/tex], [tex]\implies y=-6+7=1[/tex]
Therefore the numbers that completes the table are: 13,7,1
The correct answer is C
Kevin makes $11 per hour. If his weekly wages are $366, how many hours does he work per week?
33 hours is the answe
Answer:
so appx, 33 and a half hours per week
Step-by-step explanation:
366/11= 33.27
The length of the two legs of a right triangle are 18 cm and 24 cm what is the length of the hypotenuse of the triangle ?
A 30cm
B 36cm
C 42cm
D 48cm
Answer:
A. 30cm
Step-by-step explanation:
You would need to use the Pythagorean Theorem to find the answer. The theorem is a^2+b^2=c^2.
A and B represent the legs and C represents the hypotenuse.
Now substitute the values: 18^2+24^2=c^2
Calculate the exponents: 324+576=c^2
Now add: 900=c^2
Find the square root of 900: 30
So, the length of the hypotenuse is 30cm.
Explain why the solution of 5x – 3 > 14.5 or 2x+5
4 has a solution of all real numbers, with one exception
ANSWER: THE SOLUTION OF GIVEN INEQUALITIES IS ALL REAL NUMBER EXCEPT [1.167,3.5].
Answer:
Sample Response: When solving the first inequality, you get x > 3.5. When solving the second inequality, you get x < 3.5. The solution of an "or” compound in equality is everything in both solution sets, so the solution set is all of the numbers less than 3.5 and greater than 3.5. Since neither of the inequalities includes 3.5, the compound inequality has a solution of all real numbers except 3.5.
Step-by-step explanation:
12 POINTS--Geometry
As part of a science project, you need to estimate the number of blue spruce in a 50 acres forest. You count 36 trees in 3 acres and notice that the trees seem to be evenly distributed. Estimate the total number of blue spruce trees in the forest.
Answer:
600 blue spruce trees
Step-by-step explanation:
Let
x-----> the total number of blue spruce trees in the forest
using proportion
36/3=x/50
x=50*36/3
x=600 blue spruce trees
Linda, Dale, and Jim sent a total of 83 text messages over their cell phones during the weekend. Jim sent 7 more messages than Linda. Dale sent 4 times as many messages as Jim. How many did they each send?
Answer: The answer is 94
Step-by-step explanation: First you should pay attention to the main numbers and since more and many are addition word than you should add 7 + 4 which equals 11 then add 83 + 11 which would equal 94. Tell me if the answer is wrong and I would find another way to answer it.
Final answer:
Linda sent 8 text messages, Jim sent 15 messages, and Dale sent 60 messages during the weekend.
Explanation:
The question asks to solve a word problem to find out how many text messages Linda, Dale, and Jim sent over the weekend.
Let's denote the number of messages Linda sent as L, Jim as J, and Dale as D.
The problem states that Jim sent 7 more messages than Linda, so J = L + 7.
Dale sent 4 times as many messages as Jim, so D = 4J.
Together they sent 83 messages, which gives us the equation L + J + D = 83.
Substituting the expressions for J and D in terms of L into the equation, we get L + (L + 7) + 4(L + 7) = 83.
This simplifies to 6L + 35 = 83. Solving for L gives us L = 8.
This means Linda sent 8 messages, Jim sent 15 messages (8 + 7), and Dale sent 60 messages (4 times 15).
Who was responsible for inventing the first working four-stroke engine?
Answer:
Nikolaus Otto was responsible for inventing the first working four-stroke engine.
Step-by-step explanation:
I need to simplify this problem as much as I can. But I’m confused I just need step for step then the answer
[tex]\bf \textit{Pythagorean Identities} \\\\ sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta )=1-sin^2(\theta ) \\\\[-0.35em] ~\dotfill\\\\ \cfrac{sin^2(\theta )}{1-sin^2(\theta )}\implies \cfrac{sin^2(\theta )}{cos^2(\theta )}\implies \left[ \cfrac{sin(\theta )}{cos(\theta )} \right]^2\implies tan^2(\theta )[/tex]
Which hill described in the table is the steepest? Explain.
Answer:
Liberty Hill
Step-by-step explanation:
It rises the most over the same horizontal distance
Answer:
Liberty Hill. For every 4 feet at a horizontal distance, it rises 3 ft at the vertical rise of the street.
Step-by-step explanation:
Looking at the data, we can trace a parallel to the Cartesian Plane. As the Horizontal Distance would be the x-axis and the Vertical Axis, y-axis. So to determine the steepest hill we need to check the slope.
Like this:
Reference point (0,0)
Dixie Hill
[tex]m=\frac{40-0}{80-0}=\frac{1}{2}[/tex]
Bell Hill
[tex]m=\frac{20-0}{80-0} =\frac{20}{80}=\frac{1}{8}[/tex]
Liberty Hill
[tex]m=\frac{60-0}{80-0} =\frac{60}{80}=\frac{3}{4}[/tex]
The base Liberty Hill makes the largest angle, therefore the steepest hill.
For every 4 feet at a horizontal distance, it rises 3 ft at the vertical rise of the street.
The value in dollars, v(x), of certain truck after x year’s is represented by the equation v(x)= 32500(0.92)^x. To the nearest dollar, how much is the truck worth after 2 years?
[tex]\bf v(x)=32500(0.92)^x\qquad \qquad \stackrel{\textit{2 years later, x = 2}}{v(2)=32500(0.92)^2} \\\\\\ v(2)=32500(0.8464)\implies v(2)=27508[/tex]
Answer:
$27508.
Step-by-step explanation:
We have been given that the value of certain truck after x years is represented by equation [tex]v(x)=32500(0.92)^x[/tex]. We are asked to find the value of truck after 2 years.
To find truck's value after 2 years, we need to substitute [tex]x=2[/tex] in our given equation.
[tex]v(2)=32500(0.92)^2[/tex]
[tex]v(2)=32500*0.8464[/tex]
[tex]v(2)=27508[/tex]
Therefore, the truck is worth $27508 after 2 years.