Please help and explain!!!
Traveling with the wind, Jerry takes 10 minutes to bike to the local library. Traveling against the wind, it takes him 15 minutes. The library is 2.5 km away. What is Jerry's bicycling speed in still air?
Answer:
[tex]0.2\ km\ per\ minute[/tex]
Step-by-step explanation:
[tex]As\ we\ are\ given\ that,\\Time\ Jerry\ takes\ with\ the\ Force\ of\ Wind\ in\ his\ direction=10\ minutes\\Time\ Jerry\ takes\ with\ the\ Force\ of\ Wind\ against\ his\ direction=15\ minutes\\Considering\ only\ the\ direction\ of\ the\ forces\ are\ opposite\ and\ the\\ magnitudes\ equal,\\Let\ the\ time\ Jerry\ take\ travelling\ through\ a\ still\ wind\ be\ x\\Let\ the\ Force\ of\ wind\ be\ F.\\Hence,\\x+F=10\\x+(-F)=15\\By\ simply\ adding\ the\ equations,\\2x=10+15\\2x=25\\x=\frac{25}{2}\\[/tex]
[tex]x=12.5\\Hence,\\Time\ taken\ by\ Jerry\ during\ a\ still\ wind=12.5\ seconds.\\We\ also\ observe\ that\ 12.5\ is\ the\ mean\ of\ 10\ and\ 15\ and\ lies\ between\\ the\ two\ extremes.\\Hence,\\As\ we\ now\ know\ that,\\Distance\ from\ the\ library=2.5\ km\\Time\ taken\ by\ Jerry\ during\ the\ still\ wind=12.5\ minutes\\Hence,\ we\ know\ that\\Speed=\frac{Distance}{Time}\\Here,\\Speed=\frac{2.5}{12.5}\\Speed=\frac{1}{5}\ or\ 0.2\ km\ per\ minute[/tex]
Please help really fast!!!
Answer:
The answer is
[tex] \sqrt{65} [/tex]
Step-by-step explanation:
We need to find the distance as instructed.
Its formula is:
[tex]d = \sqrt{(x_2 - x_1) ^{2} + (y_2 - y_1)^{2} } [/tex]
Let's plug in according to the formula and solve.
[tex]d = \sqrt{(x_2 - x_1) ^{2} + (y_2 - y_1)^{2} } \\ d = \sqrt{( - 7 - 1) ^{2} + (2 - 3)^{2} } \\ d = \sqrt{64 + 1} \\ d = \sqrt{65} [/tex]
The following is a list of heights for 6 six-year-olds.
50 inches, 47 inches, 36 inches, 42 inches, 47 inches, 45 inches
The median height for these children is 46 inches.
What would happen to the median height if the 50-inch measurement was changed to 47 inches?
A. The median would increase.
B. The median would decrease.
C. The median would stay the same.
D. The median would decrease, then increase.
Answer:
option b the median would decrease
Evaluate
f(x) = 3x + 10 over the domain {0, 6, 12, 24}.What is the range of f(x)?
Answer:
10, 28, 46, 82
Step-by-step explanation:
this could be wrong im not very good with domain and range
4 The function c(t) = 1.5t + 15 models the cost of a medium pizza, in dollars), based on the number of toppings, (t). Which of the following statements are true based on the function? Select all that apply.
Answer:
gay
Step-by-step explanation:
Answer the following algebraic equation:
3x-5+9(72/8)+4=2(4x-6)
Point Value- 20 points
Answer:
X=18.4
Step-by-step explanation:
3x-5+9(72/8)+4=2(4x-6)
3x-5+9(9)+4=2(4x-6)
3x-5+81+4=8x-12
3x-5+85=8x-12
3x+80=8x-12
3x-8x=-12-80
-5x=-92
x=-92/-5
x=18.4
Checking our work:
3(18.4)-5+9(72/8)+4=2(4(18.4)-6)
55.2-5+9(9)+4=2(73.6-6)
55.2-5+81+4=2(67.6)
50.2+85=135.2
135.2=135.2
solve for X . Please help !! :)
Answer:
10
Step-by-step explanation:
thats the answer
x=5
2x=10
x√3=√170
In 1992, Jason bought a gallon of gas for $1.17. Yesterday, he bought a gallon of gas for $2.21. What is the percentage increase of the price of a gallon of gas from 1992 to yesterday? If necessary, round to the nearest tenth of a percent.
can someone help me my brain hurts
Answer:
The correct answer is: Option 2
[tex]y+1 = \frac{8}{9}(x+4)[/tex]
Step-by-step explanation:
Point-slope form of an equation is given by:
[tex]y-y_1= m(x-x_1)[/tex]
Here m is the slope of the line and (x1,y1) is the point from which the line passes
Given points are:
(-4,-1) and( 5,7)
Slope is given by the formula:
[tex]m = \frac{y_2-y_1}{x_2-x_1}\\m=\frac{7-(-1)}{5-(-4)}\\m = \frac{7+1}{5+4}\\m = \frac{8}{9}[/tex]
Now we will put the first point and slope in general form of equation of line
[tex]y-(-1) = \frac{8}{9}(x-(-4))\\y+1 = \frac{8}{9}(x+4)[/tex]
Hence,
The correct answer is: Option 2
[tex]y+1 = \frac{8}{9}(x+4)[/tex]
Which statement does NOT correctly describe the order of operations (PEMDAS)?
A.Multiplication always comes before addition.
B.Multiplication is always before division.
C.Solve exponents after parenthesis.
DSolve subtraction after addition unless subtraction is on the left side of addition.
(Help meh A.P.S)
Answer:
I think it’s D
Step-by-step explanation:
What is 10% of 60? Explain how you calculated your answer
Answer:
6
Step-by-step explanation:
10 percent decimal form = 0.10
60 * 0.10 = 6
Given g(x)=2x+3, solve for x when g(x)=3
Answer:
-3/2
Step-by-step explanation:
It cost Kaylee $7.26 to send 66 text messages. How much does each text cost to send?
Answer:
0.11
Step-by-step explanation:
7.26 / 66 = 0.11
hope this helps <3
Find the number that belongs in the green box.
Round your answer to the nearest tenth.
Answer:
40.6 degrees
Step-by-step explanation:
SOHCAHTOA
here, the tan of the missing angle = opposite / adjacent
tan(x) = 6/7
using graphing calculator obtain x = 40.61, round to 40.6 for nearest tenth
please give a heart and crown :)
The table shows the derivation of tan(2x). Select the correct reason for each step.
Reason 1 is:
Reason 2 is:
Reason 3 is:
Answer:
Reason 1 is: Addition
Reason 2 is: Tangent sum identity
Reason 3 is: Simplify
Step-by-step explanation:
I just did it on edge 2020
Answer:
Reason 1 is: Addition
Reason 2 is: Tangent sum identity
Reason 3 is: Simplify
Step-by-step explanation:
Pls help me ASAP I DONT know what to put. I only have 6 minutes to answer pls help
Answer:
YOU CHEAT ON QUIZ
Step-by-step explanation:
WHY YOU CHEAT BAD
what one is going slower
The coastline of the Atlantic Coast is 2,069 miles
long. Approximately 10% of the coastline lies in New Hampshire. About
how many miles of the coastline lie in New Hampshire? Explain how you
estimated
with workkk
Answer:
23 miles
with workkk
Step-by-step explanation:
2,069-------90% (0,9)
x ------------- 10% (0,1)
x= 2.069x0,1 : 0.9= approximately 23 miles
HELP ME PLEASE (WILL GIVE BRAIN)... "What is the equivalent of 13π/6 in degrees?
The sum of two numbers is 8. When four times the smaller
number is added to two times the larger number, the result
is 18. What is the larger number?
7
6
5
4
Answer:
x+x=8
that's mean: 2.x/4 + 4.x/1 = 18/1
we find at least a common multiple of 4 and multiply the units by 4
2x + 16x = 72
18x = 72/:18
x = 4
Answer: 7
suppose: the smaller number is a
the larger number is b
because The sum of two numbers is 8 => a + b = 8 (1)
four times the smaller number is added to two times the larger number, the result is 18 => 4a + 2b = 18 (2)
(1)(2) => a + b = 8
4a + 2b = 18
<=> a = 1
b = 7
=> the larger number is 7
Step-by-step explanation:
I need help on this question and I don't really know where to start can somebody help me?
Answer:
C
Step-by-step explanation:
Answer:
1:4, meaning 1/4 section is grey. 100/4 is 25.
H is correct
Step-by-step explanation:
A college has a financial aid formula that applies to applicants whose family's income is below a certain threshold. The financial aid can be determined by the function f(x)=15000+3000x, where x is the number of siblings (including half siblings and step siblings) that the applicant has living in their household. Find and interpret the given function values and determine an appropriate domain for the function.
PLZ HELP!
Answer:
This equation shows you how financial aid increases $3000 for every additional sibling, starting at $15,000.
Step-by-step explanation:
This equation means that for every sibling there is an additional $3000 in financial aid. When there are no siblings there is an automatic $15000 in financial aid.
Since you can't have "negative number" of siblings, the domain must begin with 0. You can have a lot of siblings, so let's put the end of domain as infinity.
Domain = [0, ∞)
If you substitute in this domain into the equation, the range will be the output. The least will be $15,000 and the most will be infinity as well.
Range = [15000, ∞)
please give thanks and click heart button :)
PLEASE HELP ILL GIVE 17 POINTS AND BRAINLIEST
The angle of elevation from a point on level ground to the top of a 50-ft tree is 25". How much closer to the tree does a point on the ground need to be for the measure of the angle of elevation to be twice the measure of the original angle? Round to the nearest tenth
A. 653
B. 778
C. 416
D. 1072
The answer is A
In this problem, we're dealing with tan since we're working with the opposite and adjacent sides.
Remember SOH CAH TOA which means
Sin: Opposite over Hypotenuse,
Cos: Adjacent over Hypotenuse,
and Tan: Opposite over Adjacent
to remember what sin cos and tan means
So to set up a tan equation we have to do
tan(angle) = opposite side length/adjacent side length
The first equation is tan(25) = 50/x
because we have to find the length of the adjacent side so we can find how far away the tree is.
which is about 107.2 ft
The second equation is tan(50) = 50/x
because now we have to find how far away the tree is once the angle of elevation is twice the measure of the original angle (which is 50)
which is about 41.9 ft
After we subtract the two values, you get 65.3 so the answer is A.
I hope this helps!
Two make the angle from the top of the tree to the ground distance should be 41.95 ft.
What is the right-angle triangle?A triangle is said to be right-angled if one of its angles is exactly 90 degrees. The total of the other two angles is 90 degrees. Perpendicular and the triangle's base are the sides that make up the right angle. The longest of the three sides, the third side is known as the hypotenuse.
Given, The angle of elevation from a point on level ground to the top of a 50-ft tree is 25".
Since it makes a right-angle triangle with the tree that has a height of 50
Also given, At another angle from the ground that is twice the previous angle calculate the base.
Thus, the new angle will be 50°
thus, the base of the triangle:
Since. tan α = height/ base
in our case, α is 50°
height = 50 ft
tan α = 50 / base
base = 50/tan 50°
Base = 41.95 ft
therefore, Two make the angle from the top of the tree to the ground distance should be 41.95 ft.
Learn more about right-angle triangles here:
https://brainly.com/question/3770177
#SPJ2
help please !! thank you so much
Answer:
Yes it is a proportional relationship
Step-by-step explanation:
That is because 20 and 10 are your original and 40 and 20 and 60 and 30 match with it.
You’re throwing a party and you need 5 liters of juice for ever 12 guests. if there are 60 guests, how many liters of juice will you need?? help!
Answer:
25 liters
Step-by-step explanation:
60/12=5
5*5=25
Answer:
25 liters of juice
Step-by-step explanation:
5 liters of juice=12 guests Multiply both sides by 5
25 liters of juice=60 guests
I think the answer is between 1 and 2
Answer:
1111111111111111111111111
19. Which graph best represents the solution set of -4x s 6y - 54?
Answer:
I believe the answer is A and I'm sorry if I'm wrong
graph best represents the solution set of -4x <- 6y - 54 graph C. Option C is the correct option.
graph best represents the solution set of -4x < -6y - 54.
Inequality can be defined as the relation of an equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.
Since the Question seems to be incomplete, The Correct inequality in the question could be -4x < -6y - 54.
Here, graph C represents the inequality. Because y-intercept is y = -9
and the x-intercept for the inequality is x = 13.5. And it's below shaded and no boundary element can be included because of < sign.
Thus, the graph best represents the solution set of -4x < -6y - 54 graph C. Option C is the correct option.
Learn more about inequality here:
brainly.com/question/14098842
#SPJ6
The question given is incomplete, Answer is correct for the solution is based on the assumed data mentioned in the question.
HELP ASAP PLS!!!
p(x)=x^3 : m(x)= 4p(x-3)-5
Describe the transformation(s) performed on p(x) that produced m(x).
Then, write a specific equation for m(x).
For every `8` boys wearing neon blue, there are `2` girls wearing neon blue. If there are `32` boys wearing neon blue, how many girls are wearing neon blue?
Answer:
8:2
32:8
Step-by-step explanation:
It's pretty simple:
If there's 32 boys, which is 4 times the amount you start with, you have to apply that to the number of girls as well since for every 8 boys, there is 2 girls.
8x4
2x4
32:8 Hope this helps
Answer:
8 girls are wearing neon blue.
Step-by-step explanation:
There are several ways to do this but one of them is to find how many groups of 8 boys are in 32. To do this we divide 32 by 8 which equals 4. We then multiply 2 by 4 which is 8.
What is w²+2xy if x= - 3, w= - 2, and y=1?
Answer:
-10
Step-by-step explanation:
w2 is -2x-2
2xy is getting times together -3x1