An airplane travels 1800 miles in 3 hours flying with the wind. On the return trip, flying
against the wind, it takes 4 hours to travel 20000 miles. Find the rate of the wind and the rate of the plane in still air.
Andrew and Michael are 15 miles apart. If they walk towards each other, they meet in 3
hours. If they both walk in the same direction, Michael overtakes, Andrew in 8 hours.
How fast does each boy walk?
Answers
Answer:
75 miles miles an hour. (First one)
5 mph for the second one.
Step by Step:
1800%2F3 = u + v (1) is the equation for the flight with the wind.
(Here "u" is the airspeed of the airplane with NO wind,
"v" is the wind speed)
1800%2F4 = u - v (2) is the equation for the flight against the wind.
Simplify equations (1) and (2) and write them as a system:
u + v = 600, (1')
u - v = 450. (2')
Now add the two equations (1') and (2'). You will get
2u = 1050 ---> u = 1050%2F2 = 525 miles per hour.
Having this, you can easily determine "v" from (1'):
v = 600 - 525 = 75 miles per hour.
-----------------------------
Second one will be 15 divided by 3 = 5mph
Answer:
look at the picuture
Step-by-step explanation:
Related Questions
Please whoever knows they can solve this, help!
I have attached the question down below. Please explain in detail and diagrams if the question permits you to do so. Thank you. I will also be marking the brainiest.
Answers
explanation:
Answer:Can't see the question
Step-by-step explanation:
Solve the equation 7(w + 13) = 35.
I know that it is:
7w + 20 = 35
- 20 - 20
7w/7 = 15/7
But I just don't know what 15 divided by 7 is as a fraction. Some one please help this is due in a week!
Answers
Answer:
w = -8
Step-by-step explanation:
7(w + 13) = 35
Divide each side by 7
7/7(w + 13) = 35/7
w+13 = 5
Subtract 13 from each side
w+13-13 =5-13
w = -8
Or you can distribute
7w +91 = 35
Subtract 91 from each side
7w+91-91 = 35-91
7w = -56
Divide each side by 7
7w/7 = -56/7
w = -8
Answer:
7(w+13)=35 {Here, 7 is wholly multiplied to w and 13}
7w+91=35
7w=35-91= -56
w= [tex]\frac{-56}{7}[/tex]
w= -8
Proof:
7(-8+13)= -56+91= 35
Therefore, w= -8
Can you guys help me? The question is in the image
Answers
Solve the equation -8(n + 7) = -88. What are two ways to start solving this equation? Choose BOTH ways.
1) Subtract 7 from both sides.
2) Use the distributive property.
3) Add 8 to both sides.
4) Add 88 to both sides.
5) Divide both sides by -8.
Answers
Answer:
Divide each side by -8
Distribute
Step-by-step explanation:
-8(n + 7) = -88.
Method 1
Divide each side by -8
n+7 = 11
Subtract 7 from each side
n = 4
Method 2
Distribute
-8n-56= -88
Add 56 to each side
-8n = -32
Divide by -8
n=4
Answer:
Distributive property & dividing -8 on both sides.
Step-by-step explanation:
You can begin solving the equation by either using the distributive property or dividing -8 on both sides.
Distributive Property:
[tex]-8(n+7)=-88\\-8n-56=-88\\-8n=-32\\n=4[/tex]
Dividing:
[tex]-8(n+7)=-88\\n+7=11\\n=4[/tex]
Please help me! I will give brainly!
Answers
Answer:
Blank1: (-1/10)
Blank2: 1
Blank3: 5
Step-by-step explanation:
First we can see that numerator is equal to 1 in the last equation, so the second missing value is 1. Looking at the middle equation we can differ that the denominator is 10. This means the missing number in the third equation is equal to ten, so a*2=10, where the answer "a" is the missing value. Solve the equation by dividing both sides by 2 leaving a=5. Final step is to make 1/5+b=1/10, where ''b" is the answer for the first blank. Solve the equation by subtracting (1/5) from (1/10) leaving b=(-1/10)
Please help me! I will give brainly
A picture shows the Washington Monument. The text below the picture reads, “The Washington Monument is made out of marble and has an aluminum pyramid at the top”. The height of the monument is labeled 554 and 3 fourths feet. The height at which the construction work halted is labeled 152 feet.
Answers
Answer:
456ft
Step-by-step explanation:
Answer:
402.75
Step-by-step explanation:
554.75-152 = 402.75
Last month David, a sales representative, sold $5000 worth of medicines and received a commission of 30% on his sales. How much money did David earn as commission last month?
A.$3,000
B.$2,000
C.$1,500
D.$1,000
Answers
Answer:
C.
Step-by-step explanation:
30% of 5,000 is 1,500.
Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies. Before winter break, he bought a new racing video game for $49.86. How much money did Perry have left?
Answers
Answer:
[see answer below]
Step-by-step explanation:
"Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies."
4 * 20 = 80
2 * 10 = 20
3 * 0.1 = 0.3
2 * 0.01 = 0.02
80 + 20 + 0.3 + 0.02 = $100.32
100.32 - 49.86 = 50.46
Hope this helps you.
Answer:
$50.46
Step-by-step explanation:
Can you please answer my question please,
Answers
HELP HELP HEL[P HELP HELP HELP HELP
sorry about the wrong file
write the answer in the comments section
Answers
Answer:
15
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
50 POINTS
My neighborhood is full of one-way streets. To drive from my house to the grocery store, I have to go 1 block south, then 1 block east, then 5 blocks north, then 2 blocks east. Each block is 1/16 of a mile. How much shorter would my trip be if I could fly like a bird (that is, travel in a straight line)?
I FOUND THE distance for non bird which is 9/16. I wanna apply the pythagoreum theorum and draw a straight line to make it a triangle so I can do so but don't know where to place it
Answers
1 block south from here puts you at (0, -1/16)
1 block east from here now puts you at (1/16, -1/16)
5 blocks north from here puts you at (1/16, 4/16)
2 blocks east from here puts you at (3/16, 4/16)
You have traveled (1/16) ( 1 + 1 + 5 + 2) = 9 / 16 of a mile
The "straightline" distance between (0, 0) and (3/16, 4/16) =
sqrt [ (3/16^2 + (4/16)^2 ] = sqrt [ 25 / 256] = 5 /16 of a mile
Your trip would be [ 9/16 - 5/16 ] which equals 4/16 simplified equals 1/4 of a mile.
if a canoe travels with a speed of a mph for 3 hours, and then with a speed of b mph for the rest of the way, how long does it take to travel c miles?
Answers
Answer:
3+b=c
Step-by-step explanation:
Answer:
3+b=c
Step-by-step explanation:
I need help with these questions from 11 to 20. I already did questions 1 through 10 with my math teacher but I'm not in school so please please please answer all of these answers it would mean a lot to me and would help me a lot with the math homework I need to get done, so yeah. Please help.
Answers
11 is 6 and 3
12 is coefficient
13 is variable
14 is 82b and 3u^2 and 7 and 41h and 54
15 is 9r and 2g
16 is exponent
17 is constant
18 is 21 and 8 and 3
19 is r and g and n
20 is a term
The number and element
Is this a function?
{(–2, 4), (0, 5), (2, 4), (3, 5), (–2, 1), (1, 4)
PLZ HURRY WILL MARK BRAINLIEST
Answers
Answer:
not a function
Step-by-step explanation:
A function has a one to one relationship
No input value can have more than one output value
-2 as an input goes to both 4 and -1 so it has more than 1 output
This is not a function
help pls :( I only need one question to pass
Answers
Answer:
The 3rd semi-circle equals 31.
Step-by-step explanation:
Since the Pythagorean Theorem states that "The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c)," we can find the answer of the 3rd semi-circle by finding the sum of each of the 2 smaller semi-circles and adding them together.
Find the slope of the line that passes through the points A(–3, 1) and B(2, –5).
PLZ ANSWER ACCURATELY AND QUICKLY WILL MARK BRAINLIEST
Answers
Answer:
- 6/5
Step-by-step explanation:
To find the slope
m = ( y2-y1)/(x2-x1)
= ( -5-1)/(2- -3)
= (-5-1)/(2+3)
- 6/5
Answer:
-6/5 or -1 1/5
Step-by-step explanation:
The formula to find the slope with any 2 points of a line is rise/run, or
(y2-y1)/(x2-x1)
In this case, y2 is -5, y1 is 1, x1 is -3, and x2 is 2.
So, the slope is:
(-5-1)/(2-(-3))
-6/5 which, as a mixed number, is -1 1/5.
You can also graph out the points on a coordinate plane, draw the line between the points, and count the rise/run, but that might take a minute or two, which is not the best if you have a timed test.
KINDLY EXPLAIN HOW THE CENTROID DIVIDES THE MEDIANS IN A RATIO 2:1
Answers
Answer:
The centroid of a triangle divides each median in the ratio of 2:1. D, E, F are mid-points of BC, CA, AB. AD, BE and CF are medians. The medians cut each other are centroid G.
Helpful link:
https://qcweb.qc.edu.hk/math/Junior%20Secondary/Centroid%20divides%20medians%20in%202%20to%201.htm#:~:text=The%20centroid%20of%20a%20triangle,in%20the%20ratio%202%3A1&text=D%2C%20E%2C%20F%20are%20mid,each%20others%20are%20centroid%20G%20.
Answer:
The centroid of a triangle divides each median in the ratio of 2:1. D, E, F are mid-points of BC, CA, AB. AD, BE and CF are medians. The medians cut each other are centroid G.
Helpful link:
https://qcweb.qc.edu.hk/math/Junior%20Secondary/Centroid%20divides%20medians%20in%202%20to%201.htm#:~:text=The%20centroid%20of%20a%20triangle,in%20the%20ratio%202%3A1&text=D%2C%20E%2C%20F%20are%20mid,each%20others%20are%20centroid%20G%20.
Is what I did correct if not then what is the answer
Answers
Answer:
Yes it is correct
Step-by-step explanation:
Answer:
You're correct!
Subtract 47 from both sides.
j = 55 - 47
Simplify 55 - 47 to 8.
j = 8
The figure shows a line graph and two shaded triangles that are similar:
Which statement about the slope of the line is true?
A. It is fraction 1 over 2 throughout the line.
B. It is 2 throughout the line.
C.The slope from point O to point A is fraction 1 over 2 time the slope of the line from point A to point B.
D. The slope from point O to point A is two times the slope of the line from point A to point B.
Answers
Answer:
Answer is B
just do your work and proof the work and that will give u the right answer
Answer:
it is B
Step-by-step explanation:
it is just B man, trust
Job seekers should try to work for their preferred companies __________.
A.
without searching the job market
B.
even if it is not the ideal position
C.
even if there are no current openings
D.
only if they know someone at the company
Answers
Answer: B
Step-by-step explanation:
Solve the equation -10(g - 6) = 65.
Answers
Answer:
g = -1/2
Step-by-step explanation:
-10(g - 6) = 65
Distribute
-10g +60 = 65
Subtract 60 from each side
-10g+60-60 = 65-60
-10g = 5
Divide by -10
-10g/-10 = 5/-10
g = -1/2
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\textsf{-10(g - 6) = 65}\\\\\rightarrow\large\textsf{-10g + 60 = 65}\\\\\large\text{SUBTRACT 60 to BOTH SIDES}\\\\\large\textsf{-10g + 60 - 60 = 65 - 60}\\\\\large\text{CANCEL out: 60 - 60 because that gives you 0}\\\\\large\text{KEEP: 65 - 60 because that helps you solve for your g-value}\\\\\large\textsf{65 - 60 = \bf 5}\\\\\large\text{DIVIDE -10 to BOTH SIDES}\\\\\mathsf{\dfrac{-10g}{-10}=\dfrac{5}{-10}}\\\\\large\text{CANCEL out:: }\mathsf{\dfrac{-10}{-10}}\large\text{ because that gives you 1}[/tex]
[tex]\large\text{KEEP: }\mathsf{\dfrac{5}{-10}}\large\text{ because that gives you the g-value answer}\\\\\large\textsf{g = }\mathsf{\dfrac{5}{-10}}\\\\\large\textsf{g =}\mathsf{\dfrac{5\div5}{-10\div5}}\\\\\large\textsf{g = }\mathsf{\bf - \dfrac{1}{2}}\\\\\\\\\boxed{\boxed{\large\textsf{Therefore, your answer is: g = }\mathsf{- \bf \dfrac{1}{2}}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}\\\\\\\\\\\frak{Amphitrite1040:)}[/tex]
What is the formula for finding the volume of a cube?
2x*x
E^3
2*x=3x(3+4)
Answers
[tex]\sf \: The \: formula \: for \: finding \: the \: volume \: of \: a \: cube \: is \hookrightarrow \boxed{ \underline{ \bf{E}^{3} }} \\ \\ \sf \: The \: volume \: of \: the \: cube \: can \: be \: found \: by \: \\ \sf \: multiplying \: the \: edge \: length \: three \: times. \: For \: instance, \: \\ \sf \: if \: the \: length \: of \: an \: edge \: of \: a \: cube \: is \: \bf \: 4, \: \sf t he \: volume \\ \sf \: will \: be \longrightarrow \bf{4}^{3}. [/tex]
Yes now just solve this for brainliest unless your a copy ;)
Answers
Answer:
-30 - 6 = -36
-36/-4 = 9 So it wouldnt work
0 - 6 = -6
-6/-4 = 1.5 It won't work
-48 - 6 = -54
-54/-4 13.5 Wouldn't work
-18 - 6 = -24
-24/-4 = 6
Looks like -18 is the answer
-18 Is the answer :D
Answer:
-18
Step-by-step explanation:
Just try all of them. I started bottom up.
-18 - 6 / -4 = -24 / -4 = 6
YOU BEST MARK ME THE BRAINLIEST. I got them brains.
find the nth term
16,25,36,49
Answers
So studying the sequence you could see that 4multiplying itself gives 16 and 5 by itself 25 , 6 by itself 36 , 7by itself 49 so by all means the next will be 8 by itself which is 64
Answer:
Hello,
Step-by-step explanation:
16=(1+3)²
25=(2+3)²
36=(3+3)²
49=(4+3)²
[tex]u_n=(n+3)^2\\[/tex]
3:Last year a fishing license cost $52.00. This year the license will cost $27.04. This is a ____ percent decrease.
Answers
Answer:
48% decrease
Step-by-step explanation:
Original cost subtract new cost
52-27.04
24.96
Divide by original cost
24.96 / 52
0.48
Change to percent form
48%
48% decrease
What is the slope of the graph of y = -3x?
-1/3
1/3
-3
3
Answers
Answer:
Slope is -3
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Identify
y = -3x
↓ Compare to y = mx + b
Slope m = -3
y-intercept b = 0
I need the answer to 7 please
Answers
7. a
Given,
Diameter = 16 feet
So, radius = 16 feet/2 = 8 feet
Circumference = 2πr
So, circumference of this circle
= 2πr
= 2 × 3.14 × 8 feet
= 3.14 × 16 feet
= 50.24 feet
b.
Given,
Diameter = 16 feet
So, radius = 16 feet/2 = 8 feet
Area = πr²
So, area of this circle
= 3.14 × (8 feet)²
= 3.14 × 64 feet²
= 200.96 feet²
Answer:
Done
Step-by-step explanation:
Area - 201.06192983
Circumference - 50.2654824574
In triangle JKL, JKL is a right angle, KM and is an altitude. JL=20 and ML=15, find KL
Answers
Answer:
KL = 17.32
Step-by-step explanation:
KL² = (M L)(J L)
KL² = (15)(20)
KL²=300
√KL²= √300
KL = 17.32
Mr. Tola’s bag contains 7 types of pencils. There are 2 green pencils, 3 blue pencils, and 2 pink pencils. Mr. Tola randomly picks one pencil out of the bag. If x represents the likelihood of probability, what is the probability (the chance) that Mr. Tola picks either a green or pink pencil? What is the probability he picks a blue pencil?
Answers
Answer:
First part: x = 4/7
Second part: x = 3/7
Step-by-step explanation:
The Second answer is x=3/7
Please Help Will Give Points
Answers
Answer:
2
Step-by-step explanation:
