Answer:
Step-by-step explanation:
The distance between two cities is 180 km.
Speed = distance/time
Time = distance /speed
This distance was covered by a car at a rate of 50 km/h
Time taken by the car to cover this distance of 180km
= 180/50 = 3.6 hours
This distance was covered by a bus at 45 km/h
Time taken by the bus to cover this distance of 180km
= 180/45 = 4 hours
This distance was covered by a truck at 40 km/h
Time taken by the truck to cover this distance of 180km
= 180/40 = 4.5 hours
This distance was covered by a bicycle at 25 km/h
Time taken by the truck to cover this distance of 180km
= 180/25 = 7.2 hours
Therefore,
speed and time are directly proportional.
Speed, s is inversely proportional to time, t
Introducing constant of variation,k
s = k/t
When s = 25, t = 7.2
25 = k/7.2
k = 7.2× 25 = 180
So
s = 180/k
By knowing how much Mark deposits, how much he deducts and what is his initial balance, we can know what the final balance is.
We will see that the balance at the end of the month is $2224.
We know that:
Mark deposited:
$450, $312, $125, and $432.
<u>The total deposit</u> is: $450 + $312 + $125 + $432 = $1319
The deductions are:
$205 and $123
<u>The total deductions</u> are: $205 + $123 = $328
<u>The initial balance</u> is $1233.
The final balance will be equal to the initial balance plus what Mark deposits minus what Mark deducts, this is:
Final balance = $1233 + $1319 - $328 = $2224
We can conclude that the balance at the end of the month is $2224
If you want to learn more, you can read:
brainly.com/question/19245500
Given :
- The measures of the angles of triangle ABC are in the ratio 2:4:9.
To Find :
- The measures of the angles.
Solution :
- Let the angles of the triangle be 2x, 4x and 9x
We know that the sum of the angles of the triangle is 180°
So,
⠀⠀2x + 4x + 9x = 180°
➺ 15x ⠀⠀⠀⠀⠀⠀= 180°
➺ x ⠀⠀⠀⠀⠀⠀⠀= 180°/15
➺ x ⠀⠀⠀⠀⠀⠀⠀= 12°
⠀
So, The measure of the three angles are :
- 2x = 2 × 12° = 24°
- 4x = 4 × 12° = 48°
- 9x = 9 × 12° = 108°
<h2>_____________________________________</h2>
You would use this formula for the problem...
(C=2πr) The circumference equals 2 multiplied by pi and radius.
In this problem it says diameter, but the diameter is just twice the length of the radius, so just multiply the radius by 2. Plugin your number.
C=2π(2) since 2 is half of 4, that's your radius.
Your answer is roughly C= 12.57.
You're welcome.
Answer:
C: The speed increases from A to F
Step-by-step explanation:
Check each node A to F including A and F.
B is higher than A, C is higher than B, ...
This is true for all of them, so it is increasing.