Answers
Related Questions
Find x.
Pls I need help could you help me
Answers
i need help fast, thanks :)
Emily is observing the velocity of a cyclist at different times. After four hours, the velocity of the cyclist is 14 km/h. After nine hours, the velocity of the cyclist is 4 km/h
Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist different times. Show your work and define the variables used.
Part B: How can you graph the equations obtained in Part A for the first 10 hours?
Answers
Define the function v(t) for velocity in km/h, and t in hours.
Part A
From t=0 to t=4, v changes from 0 to 14.
Let v(t) = mt + b
The slope is
m = 14/4 = 3.5, and the y-intercept is
b = 0.
Therefore
v(t) = 3.5t, for 0 ≤ t ≤ 4
Fromt=4 to t=9, changes from 14 to 4.
Let v(t) = mt + b
The slope is
m = (4 - 14)/(9 - 4) = -2
Therefore
v = -2t + b
When t=4, v=14, therefore
14 = -2*4 + b = -8 + b
22 = b
v(t) = -2t + 22, for 4 < t ≤ 9.
Answer:
The equation for the velocity is
v(t) = 3.5t, 0 ≤ t ≤ 4
= -2t + 22, 4 < t ≤ 9
Part B
The equation for velocity is a piecewise function that is graphed as shown below. If we assume that the second part of the equation is valid at t=10, then
v(10) = -2*10 + 22 = 2 km/h
What is x equal in 7^2 + 11^2 = x^2
Answers
Answer:
25 once a the steps are complete
What fraction of 200 gallons is 171 L? Give your answer in simplest form. 1 gallon = 4.5 L.
PLEASE HELP
Answers
Answer:
║∦║Hello Friend!║∦║
Your answer should be:
757.08
Step-by-step explanation:
I'm very sorry if it is wrong!
Have a great day!! :DFind the indicated side length to the nearest thousandth.
Answers
Given:
In a right angle triangle, base is 16, perpendicular height is x and the angle of elevation is 10 degrees.
To find:
The value of x.
Solution:
In a right angle triangle,
[tex]tan \theta=\dfrac{Perpendicular}{Base}[/tex]
In given triangle, using this formula, we get
[tex]tan (10^\circ)=\dfrac{x}{16}[/tex]
[tex]17633=\dfrac{x}{16}[/tex]
Multiply both sides by 16.
[tex]0.17633\times 16=x[/tex]
[tex]2.82128=x[/tex]
Round to the nearest thousandth.
[tex]x\approx 2.821[/tex]
Therefore, the value of x is 2.821 units.
The price of a radio was $20. It is in sale for $15. What is the percent of change in the price of a radio
Answers
Answer:
Change in price/original price x100
=(20-15)/20 x 100
=5/20 x100=25%
How many solutions will this equation have?
x^(2)-12x +13 = 0
Answers
Answer:
1
Step-by-step explanation:
What is a 6% sales tax for a pair of $85 jeans
Answers
Answer:
Hey there the answer is $5.10 but if you need the full price it is $90.10
Step-by-step explanation:
What is the slope of the line?
3(y - 1) = 2x + 2
Answers
hope it helped
3(y-1)=2x+2
3(y-1)/3=2x+2/3
y-1=2x/3+2/3
y=2x/3+2/3+1
y=2x/3+5/3
m=2/3
using the distributive property what is 49 ×17 + 49 × 3
Answers
Answer:
980
Step-by-step explanation:
I did it
HELP ME PLEASEEEEEEEEEEEEEE
Answers
Answer:
pretty sure it's the 2nd one
Step-by-step explanation:
We write 4% as a decimal
Answers
Answer:
4/100=2/50=1/25=0.04 .........
please help!!!!!!!!
Answers
Answer:
This answer should be 16
Answer:
i think here the answer is 16
In one school year, the students spent a total of 840 hours in their classes. If they have EIGHT different classes, how many hours will
they spend in THREE of those classes?
Answers
Answer:
280 hours
Step-by-step explanation:
Determine the range of the graph
Answers
Assume that all intersecting sides meet at right angles.
Be sure to include the correct unit in your answer.
16 cm
4 cm
?
10 cm
5 cm
6 cm
Answers
Answer:
9cm
Step-by-step explanation: You have to add 5 cm and 4cm because if you look that side is the same length as them added together.
is Justin went shopping for school clothes if the item cost $150 and he received a 10% discount what is the final price of his purchase
Answers
Answer:
$135
Step-by-step explanation:
We can answer this by multiplying $150 by (1.00 - 0.10), or by 0.90:
0.90($150) = $135.
Note that 1.00($150) = $150 (full price)
and that 0.10($150) = $15 (discount)
and that (0.90)($150 = $135 (the fastest way to calculate the final (sale) price.
Quadrilateral QRST is a square. If the measure of RS is 12x + 5 and QT is 8x + 15, find
the value of x.
Answers
Answer:
B) 2.5
Step-by-step explanation:
12x+5=8x+15
12x-8x=15-5
4x=10
x=10/4
x=2.5
HELP! I will rlly appreciate it! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as Amy is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now?
Answers
Answer:
I believe the answer is 10 years old
Find the distance between points (-3.7.7.5) and (0.3, 7.5).
units apart.
Answers
Answer:
sorry i didnt really understand
A plane is beginning to descend when it is 10,000 feet in the air. The straight line distance (hypotenuse) to the airport is 25,000 feet. What is the angle of depression at which the plane began its descent? Round your answer to the nearest degree.
Answers
Answer: 35,000
Step-by-step explanation:
EASY! PLS HELP!
According to the graph, what is the ratio of the number of students who selected "Fishing" as their favorite hobby to the number of students who selected "Reading" as their favorite hobby?
a. 1:5
b. 5:5
c. 5:8
d. 8:5
e. 8:1
Answers
Answer:
5:8
Step-by-step explanation:
Fishing to Reading
5 : 8
Answer:
C
Step-by-step explanation:
You have to put the 2 hobbies in the order given by the question.
The question states Fishing to reading, so that's the order you must go in.
Fishing/Reading = 5/8
C
4. A box contains cards that are numbered from 1 to 100. What is the
probability of randomly selecting a number that is less than 12? *
1/100
1/12
11/100
12/100
Answers
Answer:
Hey! The answer would be 12/100
Step-by-step explanation:
Because you dont need to simplify the fraction, the only right answer there is 12/100.
19.5 is what percent of 150?
Answers
Answer:
The answer is 13
19.5 is 13% of 150
Answer:
13%
Step-by-step explanation:
Set up the following equation
150 * x = 19.5
Solve for x by diving 19.5 with 150 which will get you 13%
At noon, a tank contained 8 cm of water. After several hours, it contained 4 cm of water. What is the
percent decrease of water in the tank?
The percent decrease of water in the tank is %.
Enter your answer in the answer box and then click Check Answer.
Review progress
Question 3
of 13
Back
Next →
Answers
Answer:
50%
Step-by-step explanation:
Pls halp I need it fast so please try your best to be fast
Answers
Answer:B
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
What plus 45 equals 225?
Answers
Answer:
180+45=225
Step-by-step explanation:
225-45=180
Answer:
180
Step-by-step explanation:
225 - 45 = 180
write 3 over 4 as a decimal number
Answers
Answer: 3/4 = 0.75
Step-by-step explanation:
Answer:
.75
Step-by-step explanation:
help me with this plzz
Answers
Answer:
6.3 I think
Step-by-step explanation:
it should be 6.3 maybeee
Answer:
10,000 x 0.63 = 6,300
Step-by-step explanation:
Hope this helped!!
PLEASE PLEASE HELP ME