Answer:
The difference of the time taken for each of the two journeys is given as follows;
The difference of time = 2000/(x·(x + 10))
Step-by-step explanation:
The speed with which the car completes the 200 km journey = x km/h
The speed with which the car completes the return journey = (x + 10) km/h
Let t₁ represent the time it takes the car to complete the 200 km and let t₂ represent the time it takes the car to complete the return journey, we have;
t₁ = 200/(x)
t₂ = 200/(x + 10)
The difference of the time taken for each of the two journeys = t₁ - t₂
We have;
t₁ - t₂ = 200/(x) - 200/(x + 10)
200/(x) - 200/(x + 10) = (200·(x + 10) - 200·x)/((x)·(x + 10)) = 2000/((x)·(x + 10))
∴ t₁ - t₂ = 2000/((x)·(x + 10)) = 2000/(x·(x + 10))
The difference of the time taken for each of the two journeys = t₁ - t₂ = 2000/(x·(x + 10))
What is the slope of a line that passes through the points (3, 2) and ( 6, 5)?
Answer:
m=1
Step-by-step explanation:
m=y2-y1/x2-x1
m=5-2/6-3
m=3/3
m=1
Find the circumference of a circle with a diameter of 13 meters. Use 3.14 as an approximation for 8. Round your answer to the
nearest whole meter. Enter only the number.
The solution is
Answer:
Step-by-step explanation:
Diameter d = 13 meters
Circumference = πd = 3.14 × 13 = 40.82 meters
I need help please ill mark brainiest
Answer:
Step-by-step explanation:
This is exponential growth which has the form
[tex]c=ar^n,\text{ where c=cases, a=initial value, r=common ratio, n=days}\\ \\ c=1000(1.2^n)\\ \\ \text{The sequence for days 2 through 6 is}\\ \\ (2, 1440),(3, 1728),(4, 2073.6),(5, 2488.32),(6, 2985.984)\\ \\ \text{Since these are people we should round to nearest whole person.}\\ \\ (2,1440),(3,1728),(4,2074),(5,2488),(6,2986)[/tex]
Urgent please help..
Answer:
18π
Step-by-step explanation:
Lateral Surface Area = 2πrh
Plug in the numbers into the equation.
but leave the pi
find the value of x and classify the triangle
Answer:
x = 91 degrees
It is an obtuse scalene triangle.
Step-by-step explanation:
I got it wrong i need help please
Answer:
44
Step-by-step explanation:
thats a right angle, 90 degrees total.
90- 46 = 44.
Try 44 !!
Perimeter of a cube, in a cube? What?
Answer:
158
Step-by-step explanation:
Based on the quadratic graph provided below, determine the characteristics of the graph requested:
Answer:
This hurt my head
Step-by-step explanation:
please help i’m struggling
A person stands 6 feet tall. The distance from the top of their head to the end of their
shadow on the ground is 10 feet. How long is their shadow? Round to the nearest
tenths where necessary.
Answer:
It's quite simple and there is no need for rounding, the answer should be 8ft
Step-by-step explanation:
Here's why,
This problem can be solved with the Pythagorean Theorem, since in draws a triangle.
The picture should explain it, let's double check:
6^2+8^2=10^2
36+64=100
Looks like it checks out
Answer:
I agree, the answer should be 8ft
What is the value of x?
Answer:
46 degrees
Step-by-step explanation:
Find Larger Triangle Missing Angle:
180-(85+53) = 180-138
= 42 degrees
Use Vertical Anlges to find smaller traingle missing angle is also 42 degrees.
Find X:
180-(92+42) = 46 degrees
Answer:
46°
Step-by-step explanation:
Measure of vertical angle = 180° - ( 85° + 53°)
= 180° - 138°
= 42°
x + 42° + 92° = 180°
x + 134° = 180°
x = 180° - 134°
x = 46°
100 divided by the sum of 22 and 3 as an expression
Answer:
Step-by-step explanation:
100 goes into the numerator and (22 + 3) into the denominator:
100
----------- is an expression.
(22 + 3)
This expression can be simplified as follows:
100
------- = 4
25
Given:-
[tex]\sf \dfrac{100}{(22 + 3)}[/tex]Solution:-
[tex]: \implies \sf\dfrac{100}{(22 + 3)} \\ \\ \\ : \implies \sf\dfrac{100}{25} \\ \\ \\ : \implies \sf \: 4 \: is \: the \: answer[/tex]
If a = 3y + 4z and b - z - 2y, then what is the value of
a + b
Answer:
sin (330) csc (60) cos (390)
Step-by-step explanation:
A luxury chairs manager found that an employee made 3/4 of a chair every 3/8 of an hour
How many chairs does the employee make per hour?
Answer:
Step-by-step explanation:
(3c/4)/(3h/8)
(3c/4)(8/3h)
(24/12)c/h
2 c/h
So employee can make 2 chairs in one hour.
Please help me...will mark brainiest
Answer: 1,521
Step-by-step explanation:
39 × 39=1,521
Graph this line using the slope and y-intercept:
y=6x+2
Click to select points on the graph.
Answer:
Step-by-step explanation:
two points: (0,2) and (-1, -4)
Durante un día, el saldo de una cuenta corriente es $ 200.000. A las 10 de la mañana se depositan $ 450.000 y a las 12 del día se cobran dos cheques por $ 300.000 y $ 550.000, respectivamente. Si luego no se realizan más movimientos en la cuenta, ¿cuál es el saldo al finalizar el día?
Slime was a toy product manufactured by Mattel, sold in a plastic trash can and introduced in February 1976. It consisted of a non-toxic viscous, squishy and oozy green or other color material made primarily from guar gum.
Help :) please I’ll give the crown:)
Answer:
50 min
Step-by-step explanation:
Convert the hours and minutes to pure minutes. 1hr40min =60min +40min= 100min and 2.5hrs =2(60min)+30min=150min. Then subtract 150 from 100 to get 50 min longer.
Which following figures have a area of 64 square feet? Select three that apply
Answer:
a,e and b
Step-by-step explanation:
Answer:
A e and b
Step-by-step explanation:
I am just going to ask this question again because I keep getting a scam answer
Answer:
14.52 seconds
Step-by-step explanation:
The diameter of the circle shown below is 12 m. What is the area of the circle?
Answer:
36pi meters squared
Step-by-step explanation:
The area of a square is calculated using the formula "pi(r)^2" To find the radius (r), we divide the diameter by 2 (12/2=6). We know that the radius is six and 6^2 = 36. The last step is to multiply by pi.
12. Given the equation y = 2x + 4, what would the value of y be when x = 1?
A. 7
B. 1
C. 5
D. 6
Answer:
D 6
Step-by-step explanation:
substitute in 1 for x
2(1)= 2
2+4= 6
y=6 when x=1
Answer:
C
Step-by-step explanation:
Leanna opens a savings account with an initial balance of $10.She then deposits $50 each month. Write an equation to explain the relationship between the amount of money in the account,a, and the number of months since Leanna opened the account,m,
please help
Answer:
a = 50m + 10
Step-by-step explanation:
relationship is that a is the dependent variable
I need help on this one please
Answer: 66 degrees
Step-by-step explanation:
11r-12r what is the answer
Answer:
-r
Step-by-step explanation:
Answer:
Negative R
Step-by-step explanation:
-R
i dont know what this is please help me thx <3
Answer:
x>0
Step-by-step explanation:
since the circle is white and not blue, it is a normal greater than sign and since the arrow is going to the right it is greater than
Answer:
it would be b because the line is showing that x is greater than zero and there is no line under the symbol because the dot is not shaded in.
Step-by-step explanation:
Help me please with the last 2 questions!
Answer:
what grade work is this 8th?
Esgetteit give me a funney joek plox plox
Answer
why cant a orfian play baseball..... they dont know where home is.
Step-by-step explanation:
Simplify: 4x^3+5y^3+2x^3+7y
A: 6x^3+5y^3+7y
B: 6x^6+12y^4
C: 6x^6+5y^3+7y
D: 9xy^3+2x^3+7y
Select all the shapes that are cross sections of a cylinder.
It would be
rectangle (verticaly cut)
a line
a circle
an oval