Answer:
It will take 4.5hrs to cover the same distance
The constant of variation,k=252
Step by step explanation
Given that,
From the question
Time=4hr
Speed=63km
By substitution we obtain,
Cross multiplying we get,
Now,
speed=56km
Distance Covered=252km
By substitution:
We obtain,
Cross multiply
Divide through by 56
From the formula,
Which means that, speed and time varies inversely.
Let k be variation constant
This implies that
Taken,
Time=4hrs
speed=56km
Answer: Distance between dolphin and helicopter = 93.5 feet
Explanation:
Distance at which dolphin swimming below the ocean= (-) 18 feet
(it is represented as the negative number as it denotes the distance below the ocean)
Distance at which helicopter is above the ocean = (+) 75.5 feet
(it is represented as the positive number as it denotes the distance above the ocean)
Distance between dolphin and helicopter = 75.5 - (-18) feet
= 75.5 + 18 feet
= 93.5 feet
The box plot shows the range and quartiles of the data. It does not show numbers or the mean. The only appropriate choice is
... The lower quartile for the data
Answer:
CED = 117
Step-by-step explanation:
21x +21 = 7x +49
21x - 7x = 49 - 21
14x = 28
x = 28/14
x = 2
7x + 49
=7(2) + 49
=14 + 49
=63
180 -63 = 117
CED= 117
Answer:
The required rate of interest = 14.285%
Step-by-step explanation:
Here, The principal amount = 7,000
The final paid amount = 9,000
Time = 2 years
Let us assume the rate of interest = R
Now, Simple Interest = Amount - Principal
= 9,000 - 7,000 = 2,000
So, the SI on the given principal for 2 years = 2,000
or, R = 14.285%
Hence, the required rate of interest = 14.285%
